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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2404.16132">arXiv:2404.16132</a> <span> [<a href="https://arxiv.org/pdf/2404.16132">pdf</a>, <a href="https://arxiv.org/format/2404.16132">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Fluid Dynamics">physics.flu-dyn</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s00366-025-02119-x">10.1007/s00366-025-02119-x <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Implementation of Immersed Boundaries via Volume Penalization in the Industrial Aeronautical Computational Fluid Dynamics Solver CODA </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Nunez%2C+J">Jonatan Nunez</a>, <a href="/search/physics?searchtype=author&query=Huergo%2C+D">David Huergo</a>, <a href="/search/physics?searchtype=author&query=Lodares%2C+D">Diego Lodares</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Suyash Shrestha</a>, <a href="/search/physics?searchtype=author&query=Guerra%2C+J">Juan Guerra</a>, <a href="/search/physics?searchtype=author&query=Florenciano%2C+J">Juan Florenciano</a>, <a href="/search/physics?searchtype=author&query=Ferrer%2C+E">Esteban Ferrer</a>, <a href="/search/physics?searchtype=author&query=Valero%2C+E">Eusebio Valero</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2404.16132v3-abstract-short" style="display: inline;"> We present the implementation and validation of an immersed boundary volume penalization method in the computational fluid dynamics solver CODA (from ONERA, DLR, and Airbus). Our goal is to model and simulate turbulent fluid flows in complex 3D aerodynamic configurations through the numerical solution of the Reynolds--averaged Navier--Stokes equations using the Spalart--Allmaras turbulent model. T… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.16132v3-abstract-full').style.display = 'inline'; document.getElementById('2404.16132v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2404.16132v3-abstract-full" style="display: none;"> We present the implementation and validation of an immersed boundary volume penalization method in the computational fluid dynamics solver CODA (from ONERA, DLR, and Airbus). Our goal is to model and simulate turbulent fluid flows in complex 3D aerodynamic configurations through the numerical solution of the Reynolds--averaged Navier--Stokes equations using the Spalart--Allmaras turbulent model. To do that, an immersed boundary method has been implemented in CODA and an efficient preprocessing tool for the construction of unstructured hexahedral meshes with adaptive mesh refinement around immersed geometries has been developed. We report several numerical examples, including subsonic flow past the NACA0012 airfoil, transonic flow past the RAE2822 airfoil, subsonic flow past the MDA30P30N multi-element airfoil, and subsonic flow around the NASA high-lift CRM aircraft. These simulations have been performed in the CODA solver with a second-order finite volume scheme as spatial discretization and an implicit backward Euler scheme based on the matrix-free GMRES block-Jacobi iterative method. The reported numerical simulations are in good agreement with their corresponding experimental data. These encouraging results allow us to conclude that the implemented immersed boundary method is efficient, flexible, and accurate and can therefore be used for aeronautical applications in industry. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2404.16132v3-abstract-full').style.display = 'none'; document.getElementById('2404.16132v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 April, 2024; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2024. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">28 pages, 25 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2308.15373">arXiv:2308.15373</a> <span> [<a href="https://arxiv.org/pdf/2308.15373">pdf</a>, <a href="https://arxiv.org/format/2308.15373">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Physics and Society">physics.soc-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> High Energy Physics in Africa, Latin America and other developing regions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Assamagan%2C+K+A">K茅t茅vi A. Assamagan</a>, <a href="/search/physics?searchtype=author&query=Bonilla%2C+J+S">Johan Sebastian Bonilla</a>, <a href="/search/physics?searchtype=author&query=Dib%2C+C">Claudio Dib</a>, <a href="/search/physics?searchtype=author&query=Muronga%2C+A">Azwinndini Muronga</a>, <a href="/search/physics?searchtype=author&query=O%27Connell%2C+H+B">Heath B. O'Connell</a>, <a href="/search/physics?searchtype=author&query=Rosenfeld%2C+R">Rogerio Rosenfeld</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Suyog Shrestha</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2308.15373v3-abstract-short" style="display: inline;"> We summarize the current status of high energy physics (HEP) in Africa, Latin America, and other developing regions </span> <span class="abstract-full has-text-grey-dark mathjax" id="2308.15373v3-abstract-full" style="display: none;"> We summarize the current status of high energy physics (HEP) in Africa, Latin America, and other developing regions <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2308.15373v3-abstract-full').style.display = 'none'; document.getElementById('2308.15373v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 October, 2023; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 August, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 2 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.08286">arXiv:2303.08286</a> <span> [<a href="https://arxiv.org/pdf/2303.08286">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Artificial Intelligence">cs.AI</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Computers and Society">cs.CY</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Machine Learning">cs.LG</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="General Economics">econ.GN</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Physics and Society">physics.soc-ph</span> </div> </div> <p class="title is-5 mathjax"> Linking Alternative Fuel Vehicles Adoption with Socioeconomic Status and Air Quality Index </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Singh%2C+A">Anuradha Singh</a>, <a href="/search/physics?searchtype=author&query=Yadav%2C+J">Jyoti Yadav</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sarahana Shrestha</a>, <a href="/search/physics?searchtype=author&query=Varde%2C+A+S">Aparna S. Varde</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2303.08286v1-abstract-short" style="display: inline;"> This is a study on the potential widespread usage of alternative fuel vehicles, linking them with the socio-economic status of the respective consumers as well as the impact on the resulting air quality index. Research in this area aims to leverage machine learning techniques in order to promote appropriate policies for the proliferation of alternative fuel vehicles such as electric vehicles with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.08286v1-abstract-full').style.display = 'inline'; document.getElementById('2303.08286v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.08286v1-abstract-full" style="display: none;"> This is a study on the potential widespread usage of alternative fuel vehicles, linking them with the socio-economic status of the respective consumers as well as the impact on the resulting air quality index. Research in this area aims to leverage machine learning techniques in order to promote appropriate policies for the proliferation of alternative fuel vehicles such as electric vehicles with due justice to different population groups. Pearson correlation coefficient is deployed in the modeling the relationships between socio-economic data, air quality index and data on alternative fuel vehicles. Linear regression is used to conduct predictive modeling on air quality index as per the adoption of alternative fuel vehicles, based on socio-economic factors. This work exemplifies artificial intelligence for social good. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.08286v1-abstract-full').style.display = 'none'; document.getElementById('2303.08286v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">ACM Class:</span> I.2.m; J.2 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> AAAI 2023 the 37th AAAI Conference on Artificial Intelligence (AISG workshop) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2209.10138">arXiv:2209.10138</a> <span> [<a href="https://arxiv.org/pdf/2209.10138">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1063/5.0096546">10.1063/5.0096546 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Observation of the Surface Layer of Lithium Metal using In Situ Spectroscopy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Seo%2C+A">Ambrose Seo</a>, <a href="/search/physics?searchtype=author&query=Meyer%2C+A">Andrew Meyer</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sujan Shrestha</a>, <a href="/search/physics?searchtype=author&query=Wang%2C+M">Ming Wang</a>, <a href="/search/physics?searchtype=author&query=Xiao%2C+X">Xingcheng Xiao</a>, <a href="/search/physics?searchtype=author&query=Cheng%2C+Y">Yang-Tse Cheng</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2209.10138v1-abstract-short" style="display: inline;"> We have investigated the surface of lithium metal using x-ray photoemission spectroscopy and optical spectroscopic ellipsometry. Even if we prepare the surface of lithium metal rigorously by chemical cleaning and mechanical polishing inside a glovebox, both spectroscopic investigations show the existence of a few tens of nanometer-thick surface layers, consisting of lithium oxides and lithium carb… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.10138v1-abstract-full').style.display = 'inline'; document.getElementById('2209.10138v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2209.10138v1-abstract-full" style="display: none;"> We have investigated the surface of lithium metal using x-ray photoemission spectroscopy and optical spectroscopic ellipsometry. Even if we prepare the surface of lithium metal rigorously by chemical cleaning and mechanical polishing inside a glovebox, both spectroscopic investigations show the existence of a few tens of nanometer-thick surface layers, consisting of lithium oxides and lithium carbonates. When lithium metal is exposed to room air (~50% moisture), in situ real-time monitoring of optical spectra indicates that the surface layer grows at a rate of approximately 24 nm/min, presumably driven by an interface-controlled process. Our results hint that surface-layer-free lithium metals are formidable to achieve by a simple cleaning/polishing method, suggesting that the initial interface between lithium metal electrodes and solid-state electrolytes in fabricated lithium metal batteries can differ from an ideal lithium/electrolyte contact. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2209.10138v1-abstract-full').style.display = 'none'; document.getElementById('2209.10138v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 September, 2022; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2022. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 3 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Appl. Phys. Lett. 120, 211602 (2022) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2009.11690">arXiv:2009.11690</a> <span> [<a href="https://arxiv.org/pdf/2009.11690">pdf</a>, <a href="https://arxiv.org/format/2009.11690">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2021.165679">10.1016/j.nima.2021.165679 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Technical design of the phase I Mu3e experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Arndt%2C+K">K. Arndt</a>, <a href="/search/physics?searchtype=author&query=Augustin%2C+H">H. Augustin</a>, <a href="/search/physics?searchtype=author&query=Baesso%2C+P">P. Baesso</a>, <a href="/search/physics?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/physics?searchtype=author&query=Berg%2C+F">F. Berg</a>, <a href="/search/physics?searchtype=author&query=Betancourt%2C+C">C. Betancourt</a>, <a href="/search/physics?searchtype=author&query=Bortoletto%2C+D">D. Bortoletto</a>, <a href="/search/physics?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/physics?searchtype=author&query=Briggl%2C+K">K. Briggl</a>, <a href="/search/physics?searchtype=author&query=Bruch%2C+D+v">D. vom Bruch</a>, <a href="/search/physics?searchtype=author&query=Buonaura%2C+A">A. Buonaura</a>, <a href="/search/physics?searchtype=author&query=Cadoux%2C+F">F. Cadoux</a>, <a href="/search/physics?searchtype=author&query=Barajas%2C+C+C">C. Chavez Barajas</a>, <a href="/search/physics?searchtype=author&query=Chen%2C+H">H. Chen</a>, <a href="/search/physics?searchtype=author&query=Clark%2C+K">K. Clark</a>, <a href="/search/physics?searchtype=author&query=Cooke%2C+P">P. Cooke</a>, <a href="/search/physics?searchtype=author&query=Corrodi%2C+S">S. Corrodi</a>, <a href="/search/physics?searchtype=author&query=Damyanova%2C+A">A. Damyanova</a>, <a href="/search/physics?searchtype=author&query=Demets%2C+Y">Y. Demets</a>, <a href="/search/physics?searchtype=author&query=Dittmeier%2C+S">S. Dittmeier</a>, <a href="/search/physics?searchtype=author&query=Eckert%2C+P">P. Eckert</a>, <a href="/search/physics?searchtype=author&query=Ehrler%2C+F">F. Ehrler</a>, <a href="/search/physics?searchtype=author&query=Fahrni%2C+D">D. Fahrni</a>, <a href="/search/physics?searchtype=author&query=Gagneur%2C+S">S. Gagneur</a>, <a href="/search/physics?searchtype=author&query=Gerritzen%2C+L">L. Gerritzen</a> , et al. (80 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2009.11690v3-abstract-short" style="display: inline;"> The Mu3e experiment aims to find or exclude the lepton flavour violating decay $渭\rightarrow eee$ at branching fractions above $10^{-16}$. A first phase of the experiment using an existing beamline at the Paul Scherrer Institute (PSI) is designed to reach a single event sensitivity of $2\cdot 10^{-15}$. We present an overview of all aspects of the technical design and expected performance of the p… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.11690v3-abstract-full').style.display = 'inline'; document.getElementById('2009.11690v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2009.11690v3-abstract-full" style="display: none;"> The Mu3e experiment aims to find or exclude the lepton flavour violating decay $渭\rightarrow eee$ at branching fractions above $10^{-16}$. A first phase of the experiment using an existing beamline at the Paul Scherrer Institute (PSI) is designed to reach a single event sensitivity of $2\cdot 10^{-15}$. We present an overview of all aspects of the technical design and expected performance of the phase~I Mu3e detector. The high rate of up to $10^{8}$ muon decays per second and the low momenta of the decay electrons and positrons pose a unique set of challenges, which we tackle using an ultra thin tracking detector based on high-voltage monolithic active pixel sensors combined with scintillating fibres and tiles for precise timing measurements. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2009.11690v3-abstract-full').style.display = 'none'; document.getElementById('2009.11690v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 September, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">117 pages. Minor corrections to the author list. Replaced with published version. Editor: Frank Meier Aeschbacher</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Instruments and Methods in Physics Research Section A: Vol. 1014 (2021) 165679 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2008.09141">arXiv:2008.09141</a> <span> [<a href="https://arxiv.org/pdf/2008.09141">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> </div> <p class="title is-5 mathjax"> Active Nonlocal Metasurfaces </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Malek%2C+S+C">Stephanie C. Malek</a>, <a href="/search/physics?searchtype=author&query=Overvig%2C+A+C">Adam C. Overvig</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sajan Shrestha</a>, <a href="/search/physics?searchtype=author&query=Yu%2C+N">Nanfang Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2008.09141v1-abstract-short" style="display: inline;"> Actively tunable and reconfigurable wavefront shaping by optical metasurfaces poses a significant technical challenge often requiring unconventional materials engineering and nanofabrication. Most wavefront-shaping metasurfaces can be considered 'local' in that their operation depends on the responses of individual meta-units. In contrast, 'nonlocal' metasurfaces function based on the modes suppor… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.09141v1-abstract-full').style.display = 'inline'; document.getElementById('2008.09141v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2008.09141v1-abstract-full" style="display: none;"> Actively tunable and reconfigurable wavefront shaping by optical metasurfaces poses a significant technical challenge often requiring unconventional materials engineering and nanofabrication. Most wavefront-shaping metasurfaces can be considered 'local' in that their operation depends on the responses of individual meta-units. In contrast, 'nonlocal' metasurfaces function based on the modes supported by many adjacent meta-units, resulting in sharp spectral features but typically no spatial control of the outgoing wavefront. Recently, nonlocal metasurfaces based on quasi-bound states in the continuum have been shown to produce designer wavefronts only across the narrow bandwidth of the supported Fano resonance. Here, we leverage the enhanced light-matter interactions associated with sharp Fano resonances to explore the active modulation of optical spectra and wavefronts by refractive index tuning and mechanical stretching. We experimentally demonstrate proof-of-principle thermo-optically tuned nonlocal metasurfaces made of silicon, and numerically demonstrate nonlocal metasurfaces that thermo-optically switch between distinct wavefront shapes. This meta-optics platform for thermally reconfigurable wavefront-shaping requires neither unusual materials and fabrication nor active control of individual meta-units. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.09141v1-abstract-full').style.display = 'none'; document.getElementById('2008.09141v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">15 pages, 6 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.05918">arXiv:1912.05918</a> <span> [<a href="https://arxiv.org/pdf/1912.05918">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> </div> <p class="title is-5 mathjax"> Effects of substrate anisotropy and edge diffusion on submonolayer growth during molecular beam epitaxy: A Kinetic Monte Carlo study </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Devkota%2C+J">Jagannath Devkota</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S+P">Shankar P. Shrestha</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.05918v1-abstract-short" style="display: inline;"> We have performed Kinetic Monte Carlo simulation work to study the effect of diffusion anisotropy, bonding anisotropy and edge diffusion on island formation at different temperatures during the sub-monolayer film growth in Molecular Beam Epitaxy. We use simple cubic solid on solid model and event based Bortz, Kalos and Labowitch (BKL) algorithm on the Kinetic Monte Carlo method to simulate the phy… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.05918v1-abstract-full').style.display = 'inline'; document.getElementById('1912.05918v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.05918v1-abstract-full" style="display: none;"> We have performed Kinetic Monte Carlo simulation work to study the effect of diffusion anisotropy, bonding anisotropy and edge diffusion on island formation at different temperatures during the sub-monolayer film growth in Molecular Beam Epitaxy. We use simple cubic solid on solid model and event based Bortz, Kalos and Labowitch (BKL) algorithm on the Kinetic Monte Carlo method to simulate the physical phenomena. We have found that the island morphology and growth exponent are found to be influenced by substrate anisotropy as well as edge diffusion, however they do not play a significant role in island elongation. The growth exponent and island size distribution are observed to be influenced by substrate anisotropy but are negligibly influenced by edge diffusion. We have found fractal islands when edge diffusion is excluded and compact islands when edge diffusion is included. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.05918v1-abstract-full').style.display = 'none'; document.getElementById('1912.05918v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, ICTP preprint 2007. arXiv admin note: text overlap with arXiv:1912.04877</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> IC--2007/129 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1912.04877">arXiv:1912.04877</a> <span> [<a href="https://arxiv.org/pdf/1912.04877">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> </div> </div> <p class="title is-5 mathjax"> Study on Sub monolayer Epitaxy Growth under Anisotropic Detachment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Devkota%2C+J">Jagannath Devkota</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S+P">Shankar P. Shrestha</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1912.04877v1-abstract-short" style="display: inline;"> We have performed Kinetic Monte Carlo simulation to study the effect of diffusion anisotropy and bonding anisotropy on island formation at different temperatures during the sub-monolayer film growth in Molecular Beam Epitaxy. We use simple cubic solid on solid model and event based Bortz, Kalos and Labowitch (BKL) algorithm on Kinetic Monte Carlo method to simulate the physical phenomena. We have… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.04877v1-abstract-full').style.display = 'inline'; document.getElementById('1912.04877v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1912.04877v1-abstract-full" style="display: none;"> We have performed Kinetic Monte Carlo simulation to study the effect of diffusion anisotropy and bonding anisotropy on island formation at different temperatures during the sub-monolayer film growth in Molecular Beam Epitaxy. We use simple cubic solid on solid model and event based Bortz, Kalos and Labowitch (BKL) algorithm on Kinetic Monte Carlo method to simulate the physical phenomena. We have found that surface anisotropy has no significant role on island elongation however it influences on the island morphology, growth exponent and island size distribution. Elongated islands were obtained when bonding anisotropy was included. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1912.04877v1-abstract-full').style.display = 'none'; document.getElementById('1912.04877v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 December, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, J. of Nepal Phys. Soc. Vol 24, No 1., December 2008</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1904.12571">arXiv:1904.12571</a> <span> [<a href="https://arxiv.org/pdf/1904.12571">pdf</a>, <a href="https://arxiv.org/format/1904.12571">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2018.09.042">10.1016/j.nima.2018.09.042 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Evaluation of Kyoto's Event-Driven X-ray Astronomical SOI Pixel Sensor with a Large Imaging Area </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hayashi%2C+H">Hideki Hayashi</a>, <a href="/search/physics?searchtype=author&query=Tsuru%2C+T+G">Takeshi Go Tsuru</a>, <a href="/search/physics?searchtype=author&query=Tanaka%2C+T">Takaaki Tanaka</a>, <a href="/search/physics?searchtype=author&query=Uchida%2C+H">Hiroyuki Uchida</a>, <a href="/search/physics?searchtype=author&query=Matsumura%2C+H">Hideaki Matsumura</a>, <a href="/search/physics?searchtype=author&query=Tachibana%2C+K">Katsuhiro Tachibana</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+S">Sodai Harada</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Ayaki Takeda</a>, <a href="/search/physics?searchtype=author&query=Mori%2C+K">Koji Mori</a>, <a href="/search/physics?searchtype=author&query=Nishioka%2C+Y">Yusuke Nishioka</a>, <a href="/search/physics?searchtype=author&query=Takebayashi%2C+N">Nobuaki Takebayashi</a>, <a href="/search/physics?searchtype=author&query=Yokoyama%2C+S">Shoma Yokoyama</a>, <a href="/search/physics?searchtype=author&query=Fukuda%2C+K">Kohei Fukuda</a>, <a href="/search/physics?searchtype=author&query=Arai%2C+Y">Yasuo Arai</a>, <a href="/search/physics?searchtype=author&query=Kurachi%2C+I">Ikuo Kurachi</a>, <a href="/search/physics?searchtype=author&query=Kawahito%2C+S">Shoji Kawahito</a>, <a href="/search/physics?searchtype=author&query=Kagawa%2C+K">Keiichiro Kagawa</a>, <a href="/search/physics?searchtype=author&query=Yasutomi%2C+K">Keita Yasutomi</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sumeet Shrestha</a>, <a href="/search/physics?searchtype=author&query=Nakanishi%2C+S">Syunta Nakanishi</a>, <a href="/search/physics?searchtype=author&query=Kamehama%2C+H">Hiroki Kamehama</a>, <a href="/search/physics?searchtype=author&query=Kohmura%2C+T">Takayoshi Kohmura</a>, <a href="/search/physics?searchtype=author&query=Hagino%2C+K">Kouichi Hagino</a>, <a href="/search/physics?searchtype=author&query=Negishi%2C+K">Kousuke Negishi</a>, <a href="/search/physics?searchtype=author&query=Oono%2C+K">Kenji Oono</a> , et al. (1 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1904.12571v1-abstract-short" style="display: inline;"> We have been developing monolithic active pixel sensors, named ``XRPIX'', based on the silicon-on-insulator (SOI) pixel technology for future X-ray astronomy satellites. XRPIX has the function of event trigger and hit address outputs. This function allows us to read out analog signals only of hit pixels on trigger timing, which is referred to as the event-driven readout mode. Recently, we processe… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.12571v1-abstract-full').style.display = 'inline'; document.getElementById('1904.12571v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1904.12571v1-abstract-full" style="display: none;"> We have been developing monolithic active pixel sensors, named ``XRPIX'', based on the silicon-on-insulator (SOI) pixel technology for future X-ray astronomy satellites. XRPIX has the function of event trigger and hit address outputs. This function allows us to read out analog signals only of hit pixels on trigger timing, which is referred to as the event-driven readout mode. Recently, we processed ``XRPIX5b'' with the largest imaging area of 21.9~mm $\times$ 13.8~mm in the XRPIX series. X-ray spectra are successfully obtained from all the pixels, and the readout noise is 46~e$^-$~(rms) in the frame readout mode. The gain variation was measured to be 1.2\%~(FWHM) among the pixels. We successfully obtain the X-ray image in the event-driven readout mode. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1904.12571v1-abstract-full').style.display = 'none'; document.getElementById('1904.12571v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 April, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nuclear Inst. and Methods in Physics Research, A 924 (2019) 400-403 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1903.11125">arXiv:1903.11125</a> <span> [<a href="https://arxiv.org/pdf/1903.11125">pdf</a>, <a href="https://arxiv.org/format/1903.11125">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevB.102.035434">10.1103/PhysRevB.102.035434 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Selection Rules for Quasi-Bound States in the Continuum </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Overvig%2C+A+C">Adam C. Overvig</a>, <a href="/search/physics?searchtype=author&query=Malek%2C+S+C">Stephanie C. Malek</a>, <a href="/search/physics?searchtype=author&query=Carter%2C+M+J">Michael J. Carter</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sajan Shrestha</a>, <a href="/search/physics?searchtype=author&query=Yu%2C+N">Nanfang Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1903.11125v2-abstract-short" style="display: inline;"> Photonic crystal slabs (PCSs) are a well-studied class of devices known to support optical Fano resonances for light normally incident to the slab, useful for narrowband filters, modulators, and nonlinear photonic devices. In shallow-etched PCSs the linewidth of the resonances is easily controlled by tuning the etching depth. This design strength comes at the cost of large device footprint due to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.11125v2-abstract-full').style.display = 'inline'; document.getElementById('1903.11125v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1903.11125v2-abstract-full" style="display: none;"> Photonic crystal slabs (PCSs) are a well-studied class of devices known to support optical Fano resonances for light normally incident to the slab, useful for narrowband filters, modulators, and nonlinear photonic devices. In shallow-etched PCSs the linewidth of the resonances is easily controlled by tuning the etching depth. This design strength comes at the cost of large device footprint due to the poor in-plane localization of optical energy. In fully-etched PCSs realized in high index contrast material systems, the in-plane localization is greatly improved, but the command over linewidth suffers. This disadvantage in fully-etched PCSs, also known as high contrast gratings (HCGs), can be overcome by accessing symmetry-protected Bound States in the Continuum (BICs). By perturbing an HCG, the BIC may be excited from the free space with quality factor showing an inverse squared dependence on the magnitude of the perturbation, while inheriting the excellent in-plane localization of their unperturbed counterparts. Here, we report an exhaustive catalog of the selection rules (if and to which free space polarization coupling occurs) of symmetry-protected BICs controlled by in-plane symmetry breaking in six types of two-dimensional PCS lattices. The chosen lattices allow access to the three highest symmetry mode classes of unperturbed square and hexagonal PCSs. The restriction to in-plane symmetry breaking allows for manufacturing devices with simple lithographic fabrication techniques in comparison to out-of-plane symmetry breaking, useful for practical applications. The approach reported provides a high-level roadmap for designing PCSs supporting controllable sharp spectral features with minimal device footprints using a mature fabrication platform. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.11125v2-abstract-full').style.display = 'none'; document.getElementById('1903.11125v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 May, 2020; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 26 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">30 pages, 21 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. B 102, 035434 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1903.00578">arXiv:1903.00578</a> <span> [<a href="https://arxiv.org/pdf/1903.00578">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1038/s41377-019-0201-7">10.1038/s41377-019-0201-7 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Dielectric Metasurfaces for Complete and Independent Control of Optical Amplitude and Phase </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Overvig%2C+A+C">Adam C. Overvig</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sajan Shrestha</a>, <a href="/search/physics?searchtype=author&query=Malek%2C+S+C">Stephanie C. Malek</a>, <a href="/search/physics?searchtype=author&query=Lu%2C+M">Ming Lu</a>, <a href="/search/physics?searchtype=author&query=Stein%2C+A">Aaron Stein</a>, <a href="/search/physics?searchtype=author&query=Zheng%2C+C">Changxi Zheng</a>, <a href="/search/physics?searchtype=author&query=Yu%2C+N">Nanfang Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1903.00578v2-abstract-short" style="display: inline;"> Metasurfaces are optically thin metamaterials that promise complete control of the wavefront of light but are primarily used to control only the phase of light. Here, we present an approach, simple in concept and in practice, that uses meta-atoms with a varying degree of form birefringence and rotation angles to create high-efficiency dielectric metasurfaces that control both the optical amplitude… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.00578v2-abstract-full').style.display = 'inline'; document.getElementById('1903.00578v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1903.00578v2-abstract-full" style="display: none;"> Metasurfaces are optically thin metamaterials that promise complete control of the wavefront of light but are primarily used to control only the phase of light. Here, we present an approach, simple in concept and in practice, that uses meta-atoms with a varying degree of form birefringence and rotation angles to create high-efficiency dielectric metasurfaces that control both the optical amplitude and phase at one or two frequencies. This opens up applications in computer-generated holography, allowing faithful reproduction of both the phase and amplitude of a target holographic scene without the iterative algorithms required in phase-only holography. We demonstrate all-dielectric metasurface holograms with independent and complete control of the amplitude and phase at up to two optical frequencies simultaneously to generate two- and three-dimensional holographic objects. We show that phase-amplitude metasurfaces enable a few features not attainable in phase-only holography; these include creating artifact-free two-dimensional holographic images, encoding phase and amplitude profiles separately at the object plane, encoding intensity profiles at the metasurface and object planes separately, and controlling the surface textures of three-dimensional holographic objects. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1903.00578v2-abstract-full').style.display = 'none'; document.getElementById('1903.00578v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 March, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">47 pages, 20 figures; additional results, references added</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1812.05803">arXiv:1812.05803</a> <span> [<a href="https://arxiv.org/pdf/1812.05803">pdf</a>, <a href="https://arxiv.org/ps/1812.05803">ps</a>, <a href="https://arxiv.org/format/1812.05803">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> Performance of SOI Pixel Sensors Developed for X-ray Astronomy </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Tanaka%2C+T">Takaaki Tanaka</a>, <a href="/search/physics?searchtype=author&query=Tsuru%2C+T+G">Takeshi Go Tsuru</a>, <a href="/search/physics?searchtype=author&query=Uchida%2C+H">Hiroyuki Uchida</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+S">Sodai Harada</a>, <a href="/search/physics?searchtype=author&query=Okuno%2C+T">Tomoyuki Okuno</a>, <a href="/search/physics?searchtype=author&query=Kayama%2C+K">Kazuho Kayama</a>, <a href="/search/physics?searchtype=author&query=Amano%2C+Y">Yuki Amano</a>, <a href="/search/physics?searchtype=author&query=Matsumura%2C+H">Hideaki Matsumura</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Ayaki Takeda</a>, <a href="/search/physics?searchtype=author&query=Mori%2C+K">Koji Mori</a>, <a href="/search/physics?searchtype=author&query=Nishioka%2C+Y">Yusuke Nishioka</a>, <a href="/search/physics?searchtype=author&query=Fukuda%2C+K">Kohei Fukuda</a>, <a href="/search/physics?searchtype=author&query=Hida%2C+T">Takahiro Hida</a>, <a href="/search/physics?searchtype=author&query=Yukumoto%2C+M">Masataka Yukumoto</a>, <a href="/search/physics?searchtype=author&query=Arai%2C+Y">Yasuo Arai</a>, <a href="/search/physics?searchtype=author&query=Kurachi%2C+I">Ikuo Kurachi</a>, <a href="/search/physics?searchtype=author&query=Kawahito%2C+S">Shoji Kawahito</a>, <a href="/search/physics?searchtype=author&query=Kagawa%2C+K">Keiichiro Kagawa</a>, <a href="/search/physics?searchtype=author&query=Yasutomi%2C+K">Keita Yasutomi</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sumeet Shrestha</a>, <a href="/search/physics?searchtype=author&query=Nakanishi%2C+S">Syunta Nakanishi</a>, <a href="/search/physics?searchtype=author&query=Kamehama%2C+H">Hiroki Kamehama</a>, <a href="/search/physics?searchtype=author&query=Kohmura%2C+T">Takayoshi Kohmura</a>, <a href="/search/physics?searchtype=author&query=Hagino%2C+K">Kouichi Hagino</a>, <a href="/search/physics?searchtype=author&query=Negishi%2C+K">Kousuke Negishi</a> , et al. (2 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1812.05803v1-abstract-short" style="display: inline;"> We have been developing monolithic active pixel sensors for X-rays based on the silicon-on-insulator technology. Our device consists of a low-resistivity Si layer for readout CMOS electronics, a high-resistivity Si sensor layer, and a SiO$_2$ layer between them. This configuration allows us both high-speed readout circuits and a thick (on the order of $100~渭{\rm m}$) depletion layer in a monolithi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1812.05803v1-abstract-full').style.display = 'inline'; document.getElementById('1812.05803v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1812.05803v1-abstract-full" style="display: none;"> We have been developing monolithic active pixel sensors for X-rays based on the silicon-on-insulator technology. Our device consists of a low-resistivity Si layer for readout CMOS electronics, a high-resistivity Si sensor layer, and a SiO$_2$ layer between them. This configuration allows us both high-speed readout circuits and a thick (on the order of $100~渭{\rm m}$) depletion layer in a monolithic device. Each pixel circuit contains a trigger output function, with which we can achieve a time resolution of $\lesssim 10~渭{\rm s}$. One of our key development items is improvement of the energy resolution. We recently fabricated a device named XRPIX6E, to which we introduced a pinned depleted diode (PDD) structure. The structure reduces the capacitance coupling between the sensing area in the sensor layer and the pixel circuit, which degrades the spectral performance. With XRPIX6E, we achieve an energy resolution of $\sim 150$~eV in full width at half maximum for 6.4-keV X-rays. In addition to the good energy resolution, a large imaging area is required for practical use. We developed and tested XRPIX5b, which has an imaging area size of $21.9~{\rm mm} \times 13.8~{\rm mm}$ and is the largest device that we ever fabricated. We successfully obtain X-ray data from almost all the $608 \times 384$ pixels with high uniformity. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1812.05803v1-abstract-full').style.display = 'none'; document.getElementById('1812.05803v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 December, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages, 9 figures, submitted to Conference Record of IEEE NSS-MIC 2018</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1807.11005">arXiv:1807.11005</a> <span> [<a href="https://arxiv.org/pdf/1807.11005">pdf</a>, <a href="https://arxiv.org/ps/1807.11005">ps</a>, <a href="https://arxiv.org/format/1807.11005">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1117/12.2312098">10.1117/12.2312098 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Kyoto's Event-Driven X-ray Astronomy SOI pixel sensor for the FORCE mission </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Tsuru%2C+T+G">Takeshi G. Tsuru</a>, <a href="/search/physics?searchtype=author&query=Hayashi%2C+H">Hideki Hayashi</a>, <a href="/search/physics?searchtype=author&query=Tachibana%2C+K">Katsuhiro Tachibana</a>, <a href="/search/physics?searchtype=author&query=Harada%2C+S">Sodai Harada</a>, <a href="/search/physics?searchtype=author&query=Uchida%2C+H">Hiroyuki Uchida</a>, <a href="/search/physics?searchtype=author&query=Tanaka%2C+T">Takaaki Tanaka</a>, <a href="/search/physics?searchtype=author&query=Arai%2C+Y">Yasuo Arai</a>, <a href="/search/physics?searchtype=author&query=Kurachi%2C+I">Ikuo Kurachi</a>, <a href="/search/physics?searchtype=author&query=Mori%2C+K">Koji Mori</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Ayaki Takeda</a>, <a href="/search/physics?searchtype=author&query=Nishioka%2C+Y">Yusuke Nishioka</a>, <a href="/search/physics?searchtype=author&query=Takebayashi%2C+N">Nobuaki Takebayashi</a>, <a href="/search/physics?searchtype=author&query=Yokoyama%2C+S">Shoma Yokoyama</a>, <a href="/search/physics?searchtype=author&query=Fukuda%2C+K">Kohei Fukuda</a>, <a href="/search/physics?searchtype=author&query=Kohmura%2C+T">Takayoshi Kohmura</a>, <a href="/search/physics?searchtype=author&query=Hagino%2C+K">Kouichi Hagino</a>, <a href="/search/physics?searchtype=author&query=Ohno%2C+K">Kenji Ohno</a>, <a href="/search/physics?searchtype=author&query=Negishi%2C+K">Kohsuke Negishi</a>, <a href="/search/physics?searchtype=author&query=Yarita%2C+K">Keigo Yarita</a>, <a href="/search/physics?searchtype=author&query=Kawahito%2C+S">Shoji Kawahito</a>, <a href="/search/physics?searchtype=author&query=Kagawa%2C+K">Keiichiro Kagawa</a>, <a href="/search/physics?searchtype=author&query=Yasutomi%2C+K">Keita Yasutomi</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sumeet Shrestha</a>, <a href="/search/physics?searchtype=author&query=Nakanishi%2C+S">Shunta Nakanishi</a>, <a href="/search/physics?searchtype=author&query=Kamehama%2C+H">Hiroki Kamehama</a> , et al. (1 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1807.11005v1-abstract-short" style="display: inline;"> We have been developing monolithic active pixel sensors, X-ray Astronomy SOI pixel sensors, XRPIXs, based on a Silicon-On-Insulator (SOI) CMOS technology as soft X-ray sensors for a future Japanese mission, FORCE (Focusing On Relativistic universe and Cosmic Evolution). The mission is characterized by broadband (1-80 keV) X-ray imaging spectroscopy with high angular resolution ($<15$~arcsec), with… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.11005v1-abstract-full').style.display = 'inline'; document.getElementById('1807.11005v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1807.11005v1-abstract-full" style="display: none;"> We have been developing monolithic active pixel sensors, X-ray Astronomy SOI pixel sensors, XRPIXs, based on a Silicon-On-Insulator (SOI) CMOS technology as soft X-ray sensors for a future Japanese mission, FORCE (Focusing On Relativistic universe and Cosmic Evolution). The mission is characterized by broadband (1-80 keV) X-ray imaging spectroscopy with high angular resolution ($<15$~arcsec), with which we can achieve about ten times higher sensitivity in comparison to the previous missions above 10~keV. Immediate readout of only those pixels hit by an X-ray is available by an event trigger output function implemented in each pixel with the time resolution higher than $10~{\rm 渭sec}$ (Event-Driven readout mode). It allows us to do fast timing observation and also reduces non-X-ray background dominating at a high X-ray energy band above 5--10~keV by adopting an anti-coincidence technique. In this paper, we introduce our latest results from the developments of the XRPIXs. (1) We successfully developed a 3-side buttable back-side illumination device with an imaging area size of 21.9~mm$\times$13.8~mm and an pixel size of $36~{\rm 渭m} \times 36~{\rm 渭m}$. The X-ray throughput with the device reaches higher than 0.57~kHz in the Event-Driven readout mode. (2) We developed a device using the double SOI structure and found that the structure improves the spectral performance in the Event-Driven readout mode by suppressing the capacitive coupling interference between the sensor and circuit layers. (3) We also developed a new device equipped with the Pinned Depleted Diode structure and confirmed that the structure reduces the dark current generated at the interface region between the sensor and the SiO$_2$ insulator layers. The device shows an energy resolution of 216~eV in FWHM at 6.4~keV in the Event-Driven readout mode. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.11005v1-abstract-full').style.display = 'none'; document.getElementById('1807.11005v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 July, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 10 figures, Proceedings Volume 10709, High Energy, Optical, and Infrared Detectors for Astronomy VIII</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1807.04987">arXiv:1807.04987</a> <span> [<a href="https://arxiv.org/pdf/1807.04987">pdf</a>, <a href="https://arxiv.org/format/1807.04987">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Fluid Dynamics">physics.flu-dyn</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Soft Condensed Matter">cond-mat.soft</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevFluids.3.094202">10.1103/PhysRevFluids.3.094202 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Thermophoresis of Janus particles at large Knudsen numbers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Baier%2C+T">Tobias Baier</a>, <a href="/search/physics?searchtype=author&query=Tiwari%2C+S">Sudarshan Tiwari</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Samir Shrestha</a>, <a href="/search/physics?searchtype=author&query=Klar%2C+A">Axel Klar</a>, <a href="/search/physics?searchtype=author&query=Hardt%2C+S">Steffen Hardt</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1807.04987v1-abstract-short" style="display: inline;"> The force and torque on a Janus sphere moving in a rarefied gas with a thermal gradient are calculated. The regime of large Knudsen number is considered, with the momenta of impinging gas molecules either obtained from a Chapman-Enskog distribution or from a binary Maxwellian distribution between two opposing parallel plates at different temperature. The reflection properties at the surface of the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.04987v1-abstract-full').style.display = 'inline'; document.getElementById('1807.04987v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1807.04987v1-abstract-full" style="display: none;"> The force and torque on a Janus sphere moving in a rarefied gas with a thermal gradient are calculated. The regime of large Knudsen number is considered, with the momenta of impinging gas molecules either obtained from a Chapman-Enskog distribution or from a binary Maxwellian distribution between two opposing parallel plates at different temperature. The reflection properties at the surface of the Janus particle are characterized by accommodation coefficients having constant but dissimilar values on each hemisphere. It is shown that the Janus particle preferentially orients such that the hemisphere with a larger accommodation coefficient points towards the lower temperature. The thermophoretic velocity of the particle is computed, and the influence of the thermophoretic motion on the magnitude of the torque responsible for the particle orientation is studied. The analytical calculations are supported by Direct Simulation Monte Carlo results, extending the scope of the study towards smaller Knudsen numbers. The results shed light on the efficiency of oriented deposition of nanoparticles from the gas phase onto a cold surface. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1807.04987v1-abstract-full').style.display = 'none'; document.getElementById('1807.04987v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 July, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Fluids 3, 094202 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1803.01581">arXiv:1803.01581</a> <span> [<a href="https://arxiv.org/pdf/1803.01581">pdf</a>, <a href="https://arxiv.org/format/1803.01581">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2018.06.049">10.1016/j.nima.2018.06.049 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Efficiency and timing performance of the MuPix7 high-voltage monolithic active pixel sensor </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Augustin%2C+H">Heiko Augustin</a>, <a href="/search/physics?searchtype=author&query=Berger%2C+N">Niklaus Berger</a>, <a href="/search/physics?searchtype=author&query=Dittmeier%2C+S">Sebastian Dittmeier</a>, <a href="/search/physics?searchtype=author&query=Grzesik%2C+C">Carsten Grzesik</a>, <a href="/search/physics?searchtype=author&query=Hammerich%2C+J">Jan Hammerich</a>, <a href="/search/physics?searchtype=author&query=Hartenstein%2C+U">Ulrich Hartenstein</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+Q">Qinhua Huang</a>, <a href="/search/physics?searchtype=author&query=Huth%2C+L">Lennart Huth</a>, <a href="/search/physics?searchtype=author&query=Immig%2C+D+M">David Maximilian Immig</a>, <a href="/search/physics?searchtype=author&query=Kiehn%2C+M">Moritz Kiehn</a>, <a href="/search/physics?searchtype=author&query=Kozlinskiy%2C+A">Alexandr Kozlinskiy</a>, <a href="/search/physics?searchtype=author&query=Aeschbacher%2C+F+M">Frank Meier Aeschbacher</a>, <a href="/search/physics?searchtype=author&query=Gonz%C3%A1lez%2C+A+M">Annie Meneses Gonz谩lez</a>, <a href="/search/physics?searchtype=author&query=Peri%C4%87%2C+I">Ivan Peri膰</a>, <a href="/search/physics?searchtype=author&query=Perrevoort%2C+A">Ann-Kathrin Perrevoort</a>, <a href="/search/physics?searchtype=author&query=Sch%C3%B6ning%2C+A">Andr茅 Sch枚ning</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Shruti Shrestha</a>, <a href="/search/physics?searchtype=author&query=Bruch%2C+D+v">Dorothea vom Bruch</a>, <a href="/search/physics?searchtype=author&query=Wauters%2C+F">Frederik Wauters</a>, <a href="/search/physics?searchtype=author&query=Wiedner%2C+D">Dirk Wiedner</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1803.01581v2-abstract-short" style="display: inline;"> The MuPix7 is a prototype high voltage monolithic active pixel sensor with 103 times 80 um2 pixels thinned to 64 um and incorporating the complete read-out circuitry including a 1.25 Gbit/s differential data link. Using data taken at the DESY electron test beam, we demonstrate an efficiency of 99.3% and a time resolution of 14 ns. The efficiency and time resolution are studied with sub-pixel resol… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.01581v2-abstract-full').style.display = 'inline'; document.getElementById('1803.01581v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1803.01581v2-abstract-full" style="display: none;"> The MuPix7 is a prototype high voltage monolithic active pixel sensor with 103 times 80 um2 pixels thinned to 64 um and incorporating the complete read-out circuitry including a 1.25 Gbit/s differential data link. Using data taken at the DESY electron test beam, we demonstrate an efficiency of 99.3% and a time resolution of 14 ns. The efficiency and time resolution are studied with sub-pixel resolution and reproduced in simulations. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1803.01581v2-abstract-full').style.display = 'none'; document.getElementById('1803.01581v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 June, 2018; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 March, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7 pages, 13 figures, submitted to Nucl.Instr.Meth.A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl. Instr. Meth. A 902 158 (2018) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1610.02210">arXiv:1610.02210</a> <span> [<a href="https://arxiv.org/pdf/1610.02210">pdf</a>, <a href="https://arxiv.org/format/1610.02210">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1748-0221/11/11/C11029">10.1088/1748-0221/11/11/C11029 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> MuPix7 - A fast monolithic HV-CMOS pixel chip for Mu3e </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Augustin%2C+H">H. Augustin</a>, <a href="/search/physics?searchtype=author&query=Berger%2C+N">N. Berger</a>, <a href="/search/physics?searchtype=author&query=Dittmeier%2C+S">S. Dittmeier</a>, <a href="/search/physics?searchtype=author&query=Hammerich%2C+J">J. Hammerich</a>, <a href="/search/physics?searchtype=author&query=Hartenstein%2C+U">U. Hartenstein</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+Q">Q. Huang</a>, <a href="/search/physics?searchtype=author&query=Huth%2C+L">L. Huth</a>, <a href="/search/physics?searchtype=author&query=Immig%2C+D">D. Immig</a>, <a href="/search/physics?searchtype=author&query=Kozlinskiy%2C+A">A. Kozlinskiy</a>, <a href="/search/physics?searchtype=author&query=Aeschbacher%2C+F+M">F. Meier Aeschbacher</a>, <a href="/search/physics?searchtype=author&query=Peri%C4%87%2C+I">I. Peri膰</a>, <a href="/search/physics?searchtype=author&query=Perrevoort%2C+A+-">A. -K. Perrevoort</a>, <a href="/search/physics?searchtype=author&query=Sch%C3%B6ning%2C+A">A. Sch枚ning</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">S. Shrestha</a>, <a href="/search/physics?searchtype=author&query=Sorokin%2C+I">I. Sorokin</a>, <a href="/search/physics?searchtype=author&query=Tyukin%2C+A">A. Tyukin</a>, <a href="/search/physics?searchtype=author&query=Bruch%2C+D+v">D. vom Bruch</a>, <a href="/search/physics?searchtype=author&query=Wauters%2C+F">F. Wauters</a>, <a href="/search/physics?searchtype=author&query=Wiedner%2C+D">D. Wiedner</a>, <a href="/search/physics?searchtype=author&query=Zimmermann%2C+M">M. Zimmermann</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1610.02210v2-abstract-short" style="display: inline;"> The MuPix7 chip is a monolithic HV-CMOS pixel chip, thinned down to 50 渭m. It provides continuous self-triggered, non-shuttered readout at rates up to 30 Mhits/chip of 3x3 mm^2 active area and a pixel size of 103x80 渭m^2. The hit efficiency depends on the chosen working point. Settings with a power consumption of 300 mW/cm^2 allow for a hit efficiency >99.5%. A time resolution of 14.2 ns (Gaussian… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.02210v2-abstract-full').style.display = 'inline'; document.getElementById('1610.02210v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1610.02210v2-abstract-full" style="display: none;"> The MuPix7 chip is a monolithic HV-CMOS pixel chip, thinned down to 50 渭m. It provides continuous self-triggered, non-shuttered readout at rates up to 30 Mhits/chip of 3x3 mm^2 active area and a pixel size of 103x80 渭m^2. The hit efficiency depends on the chosen working point. Settings with a power consumption of 300 mW/cm^2 allow for a hit efficiency >99.5%. A time resolution of 14.2 ns (Gaussian sigma) is achieved. Latest results from 2016 test beam campaigns are shown. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1610.02210v2-abstract-full').style.display = 'none'; document.getElementById('1610.02210v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 10 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Proceedingsfor the PIXEL2016 conference, submitted to JINST A dangling reference has been removed from this version, no other changes</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JINST 11 C11029 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1603.08751">arXiv:1603.08751</a> <span> [<a href="https://arxiv.org/pdf/1603.08751">pdf</a>, <a href="https://arxiv.org/format/1603.08751">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nima.2016.06.095">10.1016/j.nima.2016.06.095 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The MuPix System-on-Chip for the Mu3e Experiment </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Augustin%2C+H">Heiko Augustin</a>, <a href="/search/physics?searchtype=author&query=Berger%2C+N">Niklaus Berger</a>, <a href="/search/physics?searchtype=author&query=Dittmeier%2C+S">Sebastian Dittmeier</a>, <a href="/search/physics?searchtype=author&query=Grzesik%2C+C">Carsten Grzesik</a>, <a href="/search/physics?searchtype=author&query=Hammerich%2C+J">Jan Hammerich</a>, <a href="/search/physics?searchtype=author&query=Huang%2C+Q">Qinhua Huang</a>, <a href="/search/physics?searchtype=author&query=Huth%2C+L">Lennart Huth</a>, <a href="/search/physics?searchtype=author&query=Kiehn%2C+M">Moritz Kiehn</a>, <a href="/search/physics?searchtype=author&query=Kozlinskiy%2C+A">Alexandr Kozlinskiy</a>, <a href="/search/physics?searchtype=author&query=Aeschbacher%2C+F+M">Frank Meier Aeschbacher</a>, <a href="/search/physics?searchtype=author&query=Peri%C4%87%2C+I">Ivan Peri膰</a>, <a href="/search/physics?searchtype=author&query=Perrevoort%2C+A">Ann-Kathrin Perrevoort</a>, <a href="/search/physics?searchtype=author&query=Sch%C3%B6ning%2C+A">Andr茅 Sch枚ning</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Shruti Shrestha</a>, <a href="/search/physics?searchtype=author&query=Bruch%2C+D+v">Dorothea vom Bruch</a>, <a href="/search/physics?searchtype=author&query=Wauters%2C+F">Frederik Wauters</a>, <a href="/search/physics?searchtype=author&query=Wiedner%2C+D">Dirk Wiedner</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1603.08751v3-abstract-short" style="display: inline;"> Mu3e is a novel experiment searching for charged lepton flavor violation in the rare decay $渭^+ \rightarrow e^+e^-e^+$. Decay vertex position, decay time and particle momenta have to be precisely measured in order to reject both accidental and physics background. A silicon pixel tracker based on $50\,渭$m thin high voltage monolithic active pixel sensors (HV-MAPS) in a 1 T solenoidal magnetic field… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.08751v3-abstract-full').style.display = 'inline'; document.getElementById('1603.08751v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1603.08751v3-abstract-full" style="display: none;"> Mu3e is a novel experiment searching for charged lepton flavor violation in the rare decay $渭^+ \rightarrow e^+e^-e^+$. Decay vertex position, decay time and particle momenta have to be precisely measured in order to reject both accidental and physics background. A silicon pixel tracker based on $50\,渭$m thin high voltage monolithic active pixel sensors (HV-MAPS) in a 1 T solenoidal magnetic field provides precise vertex and momentum information. The MuPix chip combines pixel sensor cells with integrated analog electronics and a periphery with a complete digital readout. The MuPix7 is the first HV-MAPS prototype implementing all functionalities of the final sensor including a readout state machine and high speed serialization with 1.25 Gbit/s data output, allowing for a streaming readout in parallel to the data taking. The observed efficiency of the MuPix7 chip including the full readout system is $\geq99\%$ in a high rate test beam. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.08751v3-abstract-full').style.display = 'none'; document.getElementById('1603.08751v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 14 October, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Replaced with final version accepted by the publisher</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1507.06747">arXiv:1507.06747</a> <span> [<a href="https://arxiv.org/pdf/1507.06747">pdf</a>, <a href="https://arxiv.org/format/1507.06747">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> </div> <p class="title is-5 mathjax"> A SOI-Based Low Noise and Wide Dynamic Range Event-Driven Detector for X-Ray Imaging </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sumeet Shrestha</a>, <a href="/search/physics?searchtype=author&query=Kamehama%2C+H">Hiroki Kamehama</a>, <a href="/search/physics?searchtype=author&query=Kawahito%2C+S">Shoji Kawahito</a>, <a href="/search/physics?searchtype=author&query=Yasutomi%2C+K">Keita Yasutomi</a>, <a href="/search/physics?searchtype=author&query=Kagawa%2C+K">Keiichiro Kagawa</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Ayaki Takeda</a>, <a href="/search/physics?searchtype=author&query=Tsuru%2C+T+G">Takeshi Go Tsuru</a>, <a href="/search/physics?searchtype=author&query=Arai%2C+Y">Yasuo Arai</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1507.06747v1-abstract-short" style="display: inline;"> A low noise and wide dynamic range event driven detector for the detection of X-Ray energy is realized using 0.2 [um] Silicon on insulator (SOI) technology. Pixel circuits are divided into two parts; signal sensing circuit and event detection circuit. Event detection circuit is activated when X-Ray energy falls into the detector. In-pixel gain selection is implemented for the detection of a small… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.06747v1-abstract-full').style.display = 'inline'; document.getElementById('1507.06747v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1507.06747v1-abstract-full" style="display: none;"> A low noise and wide dynamic range event driven detector for the detection of X-Ray energy is realized using 0.2 [um] Silicon on insulator (SOI) technology. Pixel circuits are divided into two parts; signal sensing circuit and event detection circuit. Event detection circuit is activated when X-Ray energy falls into the detector. In-pixel gain selection is implemented for the detection of a small signal and wide band of energy particle. Adaptive gain and capability of correlated double sampling (CDS) technique for the kTC noise canceling of charge detector realizes the low noise and high dynamic range event driven detector. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1507.06747v1-abstract-full').style.display = 'none'; document.getElementById('1507.06747v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 July, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 8 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1506.04231">arXiv:1506.04231</a> <span> [<a href="https://arxiv.org/pdf/1506.04231">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Quantum Physics">quant-ph</span> </div> </div> <p class="title is-5 mathjax"> Harnessing high-dimensional hyperentanglement through a biphoton frequency comb </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Xie%2C+Z">Zhenda Xie</a>, <a href="/search/physics?searchtype=author&query=Zhong%2C+T">Tian Zhong</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sajan Shrestha</a>, <a href="/search/physics?searchtype=author&query=Xu%2C+X">XinAn Xu</a>, <a href="/search/physics?searchtype=author&query=Liang%2C+J">Junlin Liang</a>, <a href="/search/physics?searchtype=author&query=Gong%2C+Y">Yan-Xiao Gong</a>, <a href="/search/physics?searchtype=author&query=Bienfang%2C+J+C">Joshua C. Bienfang</a>, <a href="/search/physics?searchtype=author&query=Restelli%2C+A">Alessandro Restelli</a>, <a href="/search/physics?searchtype=author&query=Shapiro%2C+J+H">Jeffrey H. Shapiro</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+F+N+C">Franco N. C. Wong</a>, <a href="/search/physics?searchtype=author&query=Wong%2C+C+W">Chee Wei Wong</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1506.04231v1-abstract-short" style="display: inline;"> Quantum entanglement is a fundamental resource for secure information processing and communications, where hyperentanglement or high-dimensional entanglement has been separately proposed towards high data capacity and error resilience. The continuous-variable nature of the energy-time entanglement makes it an ideal candidate for efficient high-dimensional coding with minimal limitations. Here we d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.04231v1-abstract-full').style.display = 'inline'; document.getElementById('1506.04231v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1506.04231v1-abstract-full" style="display: none;"> Quantum entanglement is a fundamental resource for secure information processing and communications, where hyperentanglement or high-dimensional entanglement has been separately proposed towards high data capacity and error resilience. The continuous-variable nature of the energy-time entanglement makes it an ideal candidate for efficient high-dimensional coding with minimal limitations. Here we demonstrate the first simultaneous high-dimensional hyperentanglement using a biphoton frequency comb to harness the full potential in both energy and time domain. The long-postulated Hong-Ou-Mandel quantum revival is exhibited, with up to 19 time-bins, 96.5% visibilities. We further witness the high-dimensional energy-time entanglement through Franson revivals, which is observed periodically at integer time-bins, with 97.8% visibility. This qudit state is observed to simultaneously violate the generalized Bell inequality by up to 10.95 deviations while observing recurrent Clauser-Horne-Shimony-Holt S-parameters up to 2.76. Our biphoton frequency comb provides a platform in photon-efficient quantum communications towards the ultimate channel capacity through energy-time-polarization high-dimensional encoding. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1506.04231v1-abstract-full').style.display = 'none'; document.getElementById('1506.04231v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 June, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2015. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1408.4556">arXiv:1408.4556</a> <span> [<a href="https://arxiv.org/pdf/1408.4556">pdf</a>, <a href="https://arxiv.org/ps/1408.4556">ps</a>, <a href="https://arxiv.org/format/1408.4556">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Methods for Astrophysics">astro-ph.IM</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Astrophysical Phenomena">astro-ph.HE</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1117/12.2057158">10.1117/12.2057158 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Development and Performance of Kyoto's X-ray Astronomical SOI pixel (SOIPIX) sensor </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Tsuru%2C+T+G">Takeshi G. Tsuru</a>, <a href="/search/physics?searchtype=author&query=Matsumura%2C+H">Hideaki Matsumura</a>, <a href="/search/physics?searchtype=author&query=Takeda%2C+A">Ayaki Takeda</a>, <a href="/search/physics?searchtype=author&query=Tanaka%2C+T">Takaaki Tanaka</a>, <a href="/search/physics?searchtype=author&query=Nakashima%2C+S">Shinya Nakashima</a>, <a href="/search/physics?searchtype=author&query=Arai%2C+Y">Yasuo Arai</a>, <a href="/search/physics?searchtype=author&query=Mori%2C+K">Koji Mori</a>, <a href="/search/physics?searchtype=author&query=Takenaka%2C+R">Ryota Takenaka</a>, <a href="/search/physics?searchtype=author&query=Nishioka%2C+Y">Yusuke Nishioka</a>, <a href="/search/physics?searchtype=author&query=Kohmura%2C+T">Takayoshi Kohmura</a>, <a href="/search/physics?searchtype=author&query=Hatsui%2C+T">Takaki Hatsui</a>, <a href="/search/physics?searchtype=author&query=Kameshima%2C+T">Takashi Kameshima</a>, <a href="/search/physics?searchtype=author&query=Ozaki%2C+K">Kyosuke Ozaki</a>, <a href="/search/physics?searchtype=author&query=Kohmura%2C+Y">Yoshiki Kohmura</a>, <a href="/search/physics?searchtype=author&query=Wagai%2C+T">Tatsuya Wagai</a>, <a href="/search/physics?searchtype=author&query=Takei%2C+D">Dai Takei</a>, <a href="/search/physics?searchtype=author&query=Kawahito%2C+S">Shoji Kawahito</a>, <a href="/search/physics?searchtype=author&query=Kagawa%2C+K">Keiichiro Kagawa</a>, <a href="/search/physics?searchtype=author&query=Yasutomi%2C+K">Keita Yasutomi</a>, <a href="/search/physics?searchtype=author&query=Kamehama%2C+H">Hiroki Kamehama</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Sumeet Shrestha</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1408.4556v1-abstract-short" style="display: inline;"> We have been developing monolithic active pixel sensors, known as Kyoto's X-ray SOIPIXs, based on the CMOS SOI (silicon-on-insulator) technology for next-generation X-ray astronomy satellites. The event trigger output function implemented in each pixel offers microsecond time resolution and enables reduction of the non-X-ray background that dominates the high X-ray energy band above 5--10 keV. A f… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.4556v1-abstract-full').style.display = 'inline'; document.getElementById('1408.4556v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1408.4556v1-abstract-full" style="display: none;"> We have been developing monolithic active pixel sensors, known as Kyoto's X-ray SOIPIXs, based on the CMOS SOI (silicon-on-insulator) technology for next-generation X-ray astronomy satellites. The event trigger output function implemented in each pixel offers microsecond time resolution and enables reduction of the non-X-ray background that dominates the high X-ray energy band above 5--10 keV. A fully depleted SOI with a thick depletion layer and back illumination offers wide band coverage of 0.3--40 keV. Here, we report recent progress in the X-ray SOIPIX development. In this study, we achieved an energy resolution of 300~eV (FWHM) at 6~keV and a read-out noise of 33~e- (rms) in the frame readout mode, which allows us to clearly resolve Mn-K$伪$ and K$尾$. Moreover, we produced a fully depleted layer with a thickness of $500~{\rm 渭m}$. The event-driven readout mode has already been successfully demonstrated. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.4556v1-abstract-full').style.display = 'none'; document.getElementById('1408.4556v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 August, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">7pages, 12figures, SPIE Astronomical Telescopes and Instrumentation 2014, Montreal, Quebec, Canada. appears as Proc. SPIE 9147, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1406.5176">arXiv:1406.5176</a> <span> [<a href="https://arxiv.org/pdf/1406.5176">pdf</a>, <a href="https://arxiv.org/ps/1406.5176">ps</a>, <a href="https://arxiv.org/format/1406.5176">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Computational Physics">physics.comp-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Soft Condensed Matter">cond-mat.soft</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Numerical Analysis">math.NA</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.jcp.2015.03.030">10.1016/j.jcp.2015.03.030 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Numerical simulation of moving rigid body in rarefied gases </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Shrestha%2C+S">Samir Shrestha</a>, <a href="/search/physics?searchtype=author&query=Tiwari%2C+S">Sudarshan Tiwari</a>, <a href="/search/physics?searchtype=author&query=Klar%2C+A">Axel Klar</a>, <a href="/search/physics?searchtype=author&query=Hardt%2C+S">Steffen Hardt</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1406.5176v1-abstract-short" style="display: inline;"> In this paper we present a numerical scheme to simulate a moving rigid body with arbitrary shape suspended in a rarefied gas. The rarefied gas is simulated by solving the Boltzmann equation using a DSMC particle method. The motion of the rigid body is governed by the Newton-Euler equations, where the force and the torque on the rigid body is computed from the momentum transfer of the gas molecules… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.5176v1-abstract-full').style.display = 'inline'; document.getElementById('1406.5176v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1406.5176v1-abstract-full" style="display: none;"> In this paper we present a numerical scheme to simulate a moving rigid body with arbitrary shape suspended in a rarefied gas. The rarefied gas is simulated by solving the Boltzmann equation using a DSMC particle method. The motion of the rigid body is governed by the Newton-Euler equations, where the force and the torque on the rigid body is computed from the momentum transfer of the gas molecules colliding with the body. On the other hand, the motion of the rigid body influences the gas flow in its surroundings. We validate the numerical results by testing the Einstein relation for Brownian motion of the suspended particle. The translational as well as the rotational degrees of freedom are taken into account. It is shown that the numerically computed translational and rotational diffusion coefficients converge to the theoretical values. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1406.5176v1-abstract-full').style.display = 'none'; document.getElementById('1406.5176v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 June, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2014. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 8 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">MSC Class:</span> 65C05; 65C30; 74F10 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0911.4159">arXiv:0911.4159</a> <span> [<a href="https://arxiv.org/pdf/0911.4159">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Medical Physics">physics.med-ph</span> </div> </div> <p class="title is-5 mathjax"> Comparison of Fluid Attenuated Inversion Recovery Sequence with Spin Echo T2-Weighted MRI for Characterization of Brain Pathology </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Sahu%2C+I+D">Indra Dev Sahu</a>, <a href="/search/physics?searchtype=author&query=Aryal%2C+S">Sheshkant Aryal</a>, <a href="/search/physics?searchtype=author&query=Shrestha%2C+S+L">Shanta Lal Shrestha</a>, <a href="/search/physics?searchtype=author&query=Ghimire%2C+R+K">Ram Kumar Ghimire</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0911.4159v2-abstract-short" style="display: inline;"> Twenty cases of different brain pathology have been studied via MRI using an open resistive magnet with magnetic field strength of 0.2 Tesla. The relative signal intensity with respect to the repetition time (TR) at fixed echo time (TE) 0.117 sec. has been studied. It was found that the signal intensity saturates for most lesions beyond a certain TR~6 sec in the T2 - weighted image. The signal i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0911.4159v2-abstract-full').style.display = 'inline'; document.getElementById('0911.4159v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0911.4159v2-abstract-full" style="display: none;"> Twenty cases of different brain pathology have been studied via MRI using an open resistive magnet with magnetic field strength of 0.2 Tesla. The relative signal intensity with respect to the repetition time (TR) at fixed echo time (TE) 0.117 sec. has been studied. It was found that the signal intensity saturates for most lesions beyond a certain TR~6 sec in the T2 - weighted image. The signal intensity differs with respect to the inversion time (TI) for fat and cerebrospinal fluid (CSF). It was found that the intensity is nulled for CSF at TI ~1.5 sec. and for Fat at TI~0.10 sec in the FLAIR imaging sequence. Thus the intensity of the lesions is qualitatively different for the two sequences. From the radiological diagnostic point of view, it was concluded that the FLAIR sequence is more useful for the detection of lesions compared to T2 sequences. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0911.4159v2-abstract-full').style.display = 'none'; document.getElementById('0911.4159v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 December, 2009; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 November, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 6 figures</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 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