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metrology</title> <meta name="description" content="Search results for: metrology"> <meta name="keywords" content="metrology"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="metrology"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 46</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: metrology</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">46</span> Multi-Sensor Concept in Optical Surface Metrology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=%C3%96zg%C3%BCr%20Tan">Özgür Tan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In different fields of industry, there is a huge demand to acquire surface information in the dimension of micrometer up to centimeter in order to characterize functional behavior of products. Thanks to the latest developments, there are now different methods in surface metrology, but it is not possible to find a unique measurement technique which fulfils all the requirements. Depending on the interaction with the surface, regardless of optical or tactile, every method has its own advantages and disadvantages which are given by nature. However new concepts like ‘multi-sensor’, tools in surface metrology can be improved to solve most of the requirements simultaneously. In this paper, after having presented different optical techniques like confocal microscopy, focus variation and white light interferometry, a new approach is presented which combines white-light interferometry with chromatic confocal probing in a single product. Advantages of different techniques can be used for challenging applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flatness" title="flatness">flatness</a>, <a href="https://publications.waset.org/abstracts/search?q=chromatic%20confocal" title=" chromatic confocal"> chromatic confocal</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20surface%20metrology" title=" optical surface metrology"> optical surface metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=roughness" title=" roughness"> roughness</a>, <a href="https://publications.waset.org/abstracts/search?q=white-light%20interferometry" title=" white-light interferometry"> white-light interferometry</a> </p> <a href="https://publications.waset.org/abstracts/72235/multi-sensor-concept-in-optical-surface-metrology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72235.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">260</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">45</span> Metrology-Inspired Methods to Assess the Biases of Artificial Intelligence Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Belkacem%20Laimouche">Belkacem Laimouche</a> </p> <p class="card-text"><strong>Abstract:</strong></p> With the field of artificial intelligence (AI) experiencing exponential growth, fueled by technological advancements that pave the way for increasingly innovative and promising applications, there is an escalating need to develop rigorous methods for assessing their performance in pursuit of transparency and equity. This article proposes a metrology-inspired statistical framework for evaluating bias and explainability in AI systems. Drawing from the principles of metrology, we propose a pioneering approach, using a concrete example, to evaluate the accuracy and precision of AI models, as well as to quantify the sources of measurement uncertainty that can lead to bias in their predictions. Furthermore, we explore a statistical approach for evaluating the explainability of AI systems based on their ability to provide interpretable and transparent explanations of their predictions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=artificial%20intelligence" title="artificial intelligence">artificial intelligence</a>, <a href="https://publications.waset.org/abstracts/search?q=metrology" title=" metrology"> metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=measurement%20uncertainty" title=" measurement uncertainty"> measurement uncertainty</a>, <a href="https://publications.waset.org/abstracts/search?q=prediction%20error" title=" prediction error"> prediction error</a>, <a href="https://publications.waset.org/abstracts/search?q=bias" title=" bias"> bias</a>, <a href="https://publications.waset.org/abstracts/search?q=machine%20learning%20algorithms" title=" machine learning algorithms"> machine learning algorithms</a>, <a href="https://publications.waset.org/abstracts/search?q=probabilistic%20models" title=" probabilistic models"> probabilistic models</a>, <a href="https://publications.waset.org/abstracts/search?q=interlaboratory%20comparison" title=" interlaboratory comparison"> interlaboratory comparison</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20analysis" title=" data analysis"> data analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20reliability" title=" data reliability"> data reliability</a>, <a href="https://publications.waset.org/abstracts/search?q=measurement%20of%20bias%20impact%20on%20predictions" title=" measurement of bias impact on predictions"> measurement of bias impact on predictions</a>, <a href="https://publications.waset.org/abstracts/search?q=improvement%20of%20model%20accuracy%20and%20reliability" title=" improvement of model accuracy and reliability"> improvement of model accuracy and reliability</a> </p> <a href="https://publications.waset.org/abstracts/167404/metrology-inspired-methods-to-assess-the-biases-of-artificial-intelligence-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167404.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">105</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Metrology in Egyptian Architecture, Interrelation with Archaeology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Monica%20%20M.%20Marcos">Monica M. Marcos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the framework of Archaeological Research, Heritage Conservation and Restoration, the object of study is metrology applied in composition of religious architecture in ancient Egypt, and usefulness in Archaology. The objective is the determination of the geometric and metrological relations in architectural models and the module used in the initial project of the buildings. The study and data collection of religious buildings, tombs and temples of the ancient Egypt, is completed with plans. The measurements systematization and buildings modulation makes possible to establish common compositional parameters, with a module determined by the measurement unit used. The measurement system corresponding to the main period of egyptian history, was the Egyptian royal cubit. The analysis of units measurements, used in architectural design, provides exact numbers on buildable spaces dimensions. It allows establishing proportional relationships between them, and finding a geometric composition module, on which the original project was based. This responds to a philosophical and functional concept of projected spaces. In the heritage rehabilitation and restoration field, knowledge of metrology helps in excavation, reconstruction and restoration of construction elements. The correct use of metrology contributes to the identification of possible work areas, helping to locate where the damaged or missing areas are. Also in restoration projects, metrology is useful for reordering and locating decontextualized parts of buildings. The conversion of measurements taken in the current International System to the ancient egyptian measurements, allows understand its conceptual purpose and its functionality, which makes easier to carry out archaeological intervention. In the work carried out in archaeological excavations, metrology is an essential tool for locating sites and establishing work zones. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=egyptology" title="egyptology">egyptology</a>, <a href="https://publications.waset.org/abstracts/search?q=metrology" title=" metrology"> metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=archaeology" title=" archaeology"> archaeology</a>, <a href="https://publications.waset.org/abstracts/search?q=measurements" title=" measurements"> measurements</a>, <a href="https://publications.waset.org/abstracts/search?q=Egyptian%20cubit" title=" Egyptian cubit"> Egyptian cubit</a> </p> <a href="https://publications.waset.org/abstracts/191087/metrology-in-egyptian-architecture-interrelation-with-archaeology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/191087.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">25</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">43</span> Characterization of an Extrapolation Chamber for Dosimetry of Low Energy X-Ray Beams </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fernanda%20M.%20Bastos">Fernanda M. Bastos</a>, <a href="https://publications.waset.org/abstracts/search?q=Te%C3%B3genes%20A.%20da%20Silva"> Teógenes A. da Silva</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Extrapolation chambers were designed to be used as primary standard dosimeter for measuring absorbed dose in a medium in beta radiation and low energy x-rays. The International Organization for Standardization established series of reference x-radiation for calibrating and determining the energy dependence of dosimeters that are to be reproduced in metrology laboratories. Standardization of the low energy x-ray beams with tube potential lower than 30 kV may be affected by the instrument used for dosimetry. In this work, parameters of a 23392 model PTW extrapolation chamber were determined aiming its use in low energy x-ray beams as a reference instrument. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=extrapolation%20chamber" title="extrapolation chamber">extrapolation chamber</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20energy%20x-rays" title=" low energy x-rays"> low energy x-rays</a>, <a href="https://publications.waset.org/abstracts/search?q=x-ray%20dosimetry" title=" x-ray dosimetry"> x-ray dosimetry</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20metrology" title=" X-ray metrology"> X-ray metrology</a> </p> <a href="https://publications.waset.org/abstracts/54330/characterization-of-an-extrapolation-chamber-for-dosimetry-of-low-energy-x-ray-beams" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54330.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">395</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">42</span> Superficial Metrology of Organometallic Chemical Vapour Deposited Undoped ZnO Thin Films on Stainless Steel and Soda-Lime Glass Substrates</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Uchenna%20Sydney%20Mbamara">Uchenna Sydney Mbamara</a>, <a href="https://publications.waset.org/abstracts/search?q=Bolu%20Olofinjana"> Bolu Olofinjana</a>, <a href="https://publications.waset.org/abstracts/search?q=Ezekiel%20Oladele%20B.%20Ajayi"> Ezekiel Oladele B. Ajayi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Elaborate surface metrology of undoped ZnO thin films, deposited by organometallic chemical vapour deposition (OMCVD) technique at different precursor flow rates, was carried out. Dicarbomethyl-zinc precursor was used. The films were deposited on AISI304L steel and soda-lime glass substrates. Ultraviolet-visible-near-infrared (UV-Vis-NIR) spectroscopy showed that all the thin films were over 80% transparent, with an average bandgap of 3.39 eV, X-ray diffraction (XRD) results showed that the thin films were crystalline with a hexagonal structure, while Rutherford backscattering spectroscopy (RBS) results identified the elements present in each thin film as zinc and oxygen in the ratio of 1:1. Microscope and contactless profilometer results gave images with characteristic colours. The profilometer also gave the surface roughness data in both 2D and 3D. The asperity distribution of the thin film surfaces was Gaussian, while the average fractal dimension Da was in the range of 2.5 ≤ Da. The metrology proved the surfaces good for ‘touch electronics’ and coating mechanical parts for low friction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=undoped%20ZnO" title="undoped ZnO">undoped ZnO</a>, <a href="https://publications.waset.org/abstracts/search?q=precursor%20flow%20rate" title=" precursor flow rate"> precursor flow rate</a>, <a href="https://publications.waset.org/abstracts/search?q=OMCVD" title=" OMCVD"> OMCVD</a>, <a href="https://publications.waset.org/abstracts/search?q=thin%20films" title=" thin films"> thin films</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20texture" title=" surface texture"> surface texture</a>, <a href="https://publications.waset.org/abstracts/search?q=tribology" title=" tribology"> tribology</a> </p> <a href="https://publications.waset.org/abstracts/168457/superficial-metrology-of-organometallic-chemical-vapour-deposited-undoped-zno-thin-films-on-stainless-steel-and-soda-lime-glass-substrates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/168457.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">62</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">41</span> Measurement of the Neutron Spectrum of 241AmLi and 241AmF Sources Using the Bonner Sphere Spectrometers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Victor%20Rocha%20Carvalho">Victor Rocha Carvalho</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Bonner Sphere Spectrometry was used to obtain the average energy, the fluence rate, and radioprotection quantities such as the personal and ambient dose equivalent of the ²⁴¹AmLi and ²⁴¹AmF isotopic neutron sources used in the Neutron Metrology Laboratory - LN. The counts of the sources were performed with six different spherical moderators around the detector. Through this, the neutron spectrum was obtained by means of the software named NeuraLN, developed by the LN, that uses the neural networks technique. The 241AmLi achieved a result close to the literature, and 241AmF, which contains few published references, acquired a result with a slight variation from the literature. Therefore, besides fulfilling its objective, the work raises questions about a possible standard of the ²⁴¹AmLi and about the lack of work with the ²⁴¹AmF. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nuclear%20physics" title="nuclear physics">nuclear physics</a>, <a href="https://publications.waset.org/abstracts/search?q=neutron%20metrology" title=" neutron metrology"> neutron metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=neutron%20spectrometry" title=" neutron spectrometry"> neutron spectrometry</a>, <a href="https://publications.waset.org/abstracts/search?q=bonner%20sphere%20spectrometers" title=" bonner sphere spectrometers"> bonner sphere spectrometers</a> </p> <a href="https://publications.waset.org/abstracts/160581/measurement-of-the-neutron-spectrum-of-241amli-and-241amf-sources-using-the-bonner-sphere-spectrometers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/160581.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">102</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">40</span> Virtual Metrology for Copper Clad Laminate Manufacturing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Misuk%20Kim">Misuk Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Seokho%20Kang"> Seokho Kang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jehyuk%20Lee"> Jehyuk Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyunchang%20Cho"> Hyunchang Cho</a>, <a href="https://publications.waset.org/abstracts/search?q=Sungzoon%20Cho"> Sungzoon Cho</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In semiconductor manufacturing, virtual metrology (VM) refers to methods to predict properties of a wafer based on machine parameters and sensor data of the production equipment, without performing the (costly) physical measurement of the wafer properties (Wikipedia). Additional benefits include avoidance of human bias and identification of important factors affecting the quality of the process which allow improving the process quality in the future. It is however rare to find VM applied to other areas of manufacturing. In this work, we propose to use VM to copper clad laminate (CCL) manufacturing. CCL is a core element of a printed circuit board (PCB) which is used in smartphones, tablets, digital cameras, and laptop computers. The manufacturing of CCL consists of three processes: Treating, lay-up, and pressing. Treating, the most important process among the three, puts resin on glass cloth, heat up in a drying oven, then produces prepreg for lay-up process. In this process, three important quality factors are inspected: Treated weight (T/W), Minimum Viscosity (M/V), and Gel Time (G/T). They are manually inspected, incurring heavy cost in terms of time and money, which makes it a good candidate for VM application. We developed prediction models of the three quality factors T/W, M/V, and G/T, respectively, with process variables, raw material, and environment variables. The actual process data was obtained from a CCL manufacturer. A variety of variable selection methods and learning algorithms were employed to find the best prediction model. We obtained prediction models of M/V and G/T with a high enough accuracy. They also provided us with information on “important” predictor variables, some of which the process engineers had been already aware and the rest of which they had not. They were quite excited to find new insights that the model revealed and set out to do further analysis on them to gain process control implications. T/W did not turn out to be possible to predict with a reasonable accuracy with given factors. The very fact indicates that the factors currently monitored may not affect T/W, thus an effort has to be made to find other factors which are not currently monitored in order to understand the process better and improve the quality of it. In conclusion, VM application to CCL’s treating process was quite successful. The newly built quality prediction model allowed one to reduce the cost associated with actual metrology as well as reveal some insights on the factors affecting the important quality factors and on the level of our less than perfect understanding of the treating process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=copper%20clad%20laminate" title="copper clad laminate">copper clad laminate</a>, <a href="https://publications.waset.org/abstracts/search?q=predictive%20modeling" title=" predictive modeling"> predictive modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20control" title=" quality control"> quality control</a>, <a href="https://publications.waset.org/abstracts/search?q=virtual%20metrology" title=" virtual metrology"> virtual metrology</a> </p> <a href="https://publications.waset.org/abstracts/30066/virtual-metrology-for-copper-clad-laminate-manufacturing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30066.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">350</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">39</span> Dispersion-Less All Reflective Split and Delay Unit for Ultrafast Metrology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Akansha%20Tyagi">Akansha Tyagi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehar%20S.%20Sidhu"> Mehar S. Sidhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ankur%20Mandal"> Ankur Mandal</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanjay%20Kapoor"> Sanjay Kapoor</a>, <a href="https://publications.waset.org/abstracts/search?q=Sunil%20Dahiya"> Sunil Dahiya</a>, <a href="https://publications.waset.org/abstracts/search?q=Jan%20M.%20Rost"> Jan M. Rost</a>, <a href="https://publications.waset.org/abstracts/search?q=Thomas%20Pfeifer"> Thomas Pfeifer</a>, <a href="https://publications.waset.org/abstracts/search?q=Kamal%20P.%20Singh"> Kamal P. Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An all-reflective split and delay unit is designed for dispersion free measurement of broadband ultrashort pulses using a pair of reflective knife edge prism for splitting and recombining of the measuring pulse. It is based on symmetrical wavefront splitting of the measuring pulse having two separate arms to independently shape both split parts. We have validated our delay line with NIR –femtosecond pulse measurement centered at 800 nm using second harmonic-Interferometric frequency resolved optical gating (SH-IFROG). The delay line is compact, easy to align and provides attosecond stability and precision and thus make it more versatile for wide range of applications in ultrafast measurements. We envision that the present delay line will find applications in IR-IR controlling for high harmonic generation (HHG) and attosecond IR-XUV pump-probe measurements with solids and gases providing attosecond resolution and wide delay range. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=HHG" title="HHG">HHG</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20optics" title=" nonlinear optics"> nonlinear optics</a>, <a href="https://publications.waset.org/abstracts/search?q=pump-probe%20spectroscopy" title=" pump-probe spectroscopy"> pump-probe spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrafast%20metrology" title=" ultrafast metrology"> ultrafast metrology</a> </p> <a href="https://publications.waset.org/abstracts/147793/dispersion-less-all-reflective-split-and-delay-unit-for-ultrafast-metrology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147793.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">200</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">38</span> MIM and Experimental Studies of the Thermal Drift in an Ultra-High Precision Instrument for Dimensional Metrology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kam%C3%A9lia%20Bouderbala">Kamélia Bouderbala</a>, <a href="https://publications.waset.org/abstracts/search?q=Hichem%20Nouira"> Hichem Nouira</a>, <a href="https://publications.waset.org/abstracts/search?q=Etienne%20Videcoq"> Etienne Videcoq</a>, <a href="https://publications.waset.org/abstracts/search?q=Manuel%20Girault"> Manuel Girault</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Petit"> Daniel Petit</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Thermal drifts caused by the power dissipated by the mechanical guiding systems constitute the main limit to enhance the accuracy of an ultra-high precision cylindricity measuring machine. For this reason, a high precision compact prototype has been designed to simulate the behaviour of the instrument. It ensures in situ calibration of four capacitive displacement probes by comparison with four laser interferometers. The set-up includes three heating wires for simulating the powers dissipated by the mechanical guiding systems, four additional heating wires located between each laser interferometer head and its respective holder, 19 Platinum resistance thermometers (Pt100) to observe the temperature evolution inside the set-up and four Pt100 sensors to monitor the ambient temperature. Both a Reduced Model (RM), based on the Modal Identification Method (MIM) was developed and optimized by comparison with the experimental results. Thereafter, time dependent tests were performed under several conditions to measure the temperature variation at 19 fixed positions in the system and compared to the calculated RM results. The RM results show good agreement with experiment and reproduce as well the temperature variations, revealing the importance of the RM proposed for the evaluation of the thermal behaviour of the system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=modal%20identification%20method%20%28MIM%29" title="modal identification method (MIM)">modal identification method (MIM)</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20behavior%20and%20drift" title=" thermal behavior and drift"> thermal behavior and drift</a>, <a href="https://publications.waset.org/abstracts/search?q=dimensional%20metrology" title=" dimensional metrology"> dimensional metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=measurement" title=" measurement"> measurement</a> </p> <a href="https://publications.waset.org/abstracts/36571/mim-and-experimental-studies-of-the-thermal-drift-in-an-ultra-high-precision-instrument-for-dimensional-metrology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36571.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">396</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">37</span> Challenges and Insights by Electrical Characterization of Large Area Graphene Layers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marcus%20Klein">Marcus Klein</a>, <a href="https://publications.waset.org/abstracts/search?q=Martina%20Grie%C3%9FBach"> Martina GrießBach</a>, <a href="https://publications.waset.org/abstracts/search?q=Richard%20Kupke"> Richard Kupke</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The current advances in the research and manufacturing of large area graphene layers are promising towards the introduction of this exciting material in the display industry and other applications that benefit from excellent electrical and optical characteristics. New production technologies in the fabrication of flexible displays, touch screens or printed electronics apply graphene layers on non-metal substrates and bring new challenges to the required metrology. Traditional measurement concepts of layer thickness, sheet resistance, and layer uniformity, are difficult to apply to graphene production processes and are often harmful to the product layer. New non-contact sensor concepts are required to adapt to the challenges and even the foreseeable inline production of large area graphene. Dedicated non-contact measurement sensors are a pioneering method to leverage these issues in a large variety of applications, while significantly lowering the costs of development and process setup. Transferred and printed graphene layers can be characterized with high accuracy in a huge measurement range using a very high resolution. Large area graphene mappings are applied for process optimization and for efficient quality control for transfer, doping, annealing and stacking processes. Examples of doped, defected and excellent Graphene are presented as quality images and implications for manufacturers are explained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=graphene" title="graphene">graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=doping%20and%20defect%20testing" title=" doping and defect testing"> doping and defect testing</a>, <a href="https://publications.waset.org/abstracts/search?q=non-contact%20sheet%20resistance%20measurement" title=" non-contact sheet resistance measurement"> non-contact sheet resistance measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=inline%20metrology" title=" inline metrology"> inline metrology</a> </p> <a href="https://publications.waset.org/abstracts/54544/challenges-and-insights-by-electrical-characterization-of-large-area-graphene-layers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54544.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">307</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">36</span> Holographic Visualisation of 3D Point Clouds in Real-time Measurements: A Proof of Concept Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Henrique%20Fernandes">Henrique Fernandes</a>, <a href="https://publications.waset.org/abstracts/search?q=Sofia%20Catalucci"> Sofia Catalucci</a>, <a href="https://publications.waset.org/abstracts/search?q=Richard%20Leach"> Richard Leach</a>, <a href="https://publications.waset.org/abstracts/search?q=Kapil%20Sugand"> Kapil Sugand</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Holograms are 3D images formed by the interference of light beams from a laser or other coherent light source. Pepper’s ghost is a form of hologram conceptualised in the 18th century. This Holographic visualisation with metrology measuring techniques by displaying measurements taken in real-time in holographic form can assist in research and education. New structural designs such as the Plexiglass Stand and the Hologram Box can optimise the holographic experience. Method: The equipment used included: (i) Zeiss’s ATOS Core 300 optical coordinate measuring instrument that scanned real-world objects; (ii) Cloud Compare, open-source software used for point cloud processing; and (iii) Hologram Box, designed and manufactured during this research to provide the blackout environment needed to display 3D point clouds in real-time measurements in holographic format, in addition to a portability aspect to holograms. The equipment was tailored to realise the goal of displaying measurements in an innovative technique and to improve on conventional methods. Three test scans were completed before doing a holographic conversion. Results: The outcome was a precise recreation of the original object in the holographic form presented with dense point clouds and surface density features in a colour map. Conclusion: This work establishes a way to visualise data in a point cloud system. To our understanding, this is a work that has never been attempted. This achievement provides an advancement in holographic visualisation. The Hologram Box could be used as a feedback tool for measurement quality control and verification in future smart factories. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=holography" title="holography">holography</a>, <a href="https://publications.waset.org/abstracts/search?q=3D%20scans" title=" 3D scans"> 3D scans</a>, <a href="https://publications.waset.org/abstracts/search?q=hologram%20box" title=" hologram box"> hologram box</a>, <a href="https://publications.waset.org/abstracts/search?q=metrology" title=" metrology"> metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=point%20cloud" title=" point cloud"> point cloud</a> </p> <a href="https://publications.waset.org/abstracts/163214/holographic-visualisation-of-3d-point-clouds-in-real-time-measurements-a-proof-of-concept-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163214.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">89</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">35</span> VR/AR Applications in Personalized Learning</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Andy%20Wang">Andy Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Personalized learning refers to an educational approach that tailors instruction to meet the unique needs, interests, and abilities of each learner. This method of learning aims at providing students with a customized learning experience that is more engaging, interactive, and relevant to their personal lives. With generative AI technology, the author has developed a Personal Tutoring Bot (PTB) that supports personalized learning. The author is currently testing PTB in his EE 499 – Microelectronics Metrology course. Virtual Reality (VR) and Augmented Reality (AR) provide interactive and immersive learning environments that can engage student in online learning. This paper presents the rationale of integrating VR/AR tools in PTB and discusses challenges and solutions of incorporating VA/AR into the Personal Tutoring Bot (PTB). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=personalized%20learning" title="personalized learning">personalized learning</a>, <a href="https://publications.waset.org/abstracts/search?q=online%20education" title=" online education"> online education</a>, <a href="https://publications.waset.org/abstracts/search?q=hands-on%20practice" title=" hands-on practice"> hands-on practice</a>, <a href="https://publications.waset.org/abstracts/search?q=VR%2FAR%20tools" title=" VR/AR tools"> VR/AR tools</a> </p> <a href="https://publications.waset.org/abstracts/175539/vrar-applications-in-personalized-learning" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/175539.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">68</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">34</span> Surface Topography Measurement by Confocal Spectral Interferometry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Manallah">A. Manallah</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Meier"> C. Meier</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Confocal spectral interferometry (CSI) is an innovative optical method for determining microtopography of surfaces and thickness of transparent layers, based on the combination of two optical principles: confocal imaging, and spectral interferometry. Confocal optical system images at each instant a single point of the sample. The whole surface is reconstructed by plan scanning. The interference signal generated by mixing two white-light beams is analyzed using a spectrometer. In this work, five ‘rugotests’ of known standard roughnesses are investigated. The topography is then measured and illustrated, and the equivalent roughness is determined and compared with the standard values. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=confocal%20spectral%20interferometry" title="confocal spectral interferometry">confocal spectral interferometry</a>, <a href="https://publications.waset.org/abstracts/search?q=nondestructive%20testing" title=" nondestructive testing"> nondestructive testing</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20metrology" title=" optical metrology"> optical metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20topography" title=" surface topography"> surface topography</a>, <a href="https://publications.waset.org/abstracts/search?q=roughness" title=" roughness"> roughness</a> </p> <a href="https://publications.waset.org/abstracts/70452/surface-topography-measurement-by-confocal-spectral-interferometry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70452.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">276</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">33</span> Manufacturing and Calibration of Material Standards for Optical Microscopy in Industrial Environments</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alberto%20M%C3%ADnguez-Mart%C3%ADnez">Alberto Mínguez-Martínez</a>, <a href="https://publications.waset.org/abstracts/search?q=Jes%C3%BAs%20De%20Vicente%20Y%20Oliva"> Jesús De Vicente Y Oliva</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It seems that we live in a world in which the trend in industrial environments is the miniaturization of systems and materials and the fabrication of parts at the micro-and nano-scale. The problem arises when manufacturers want to study the quality of their production. This characteristic is becoming crucial due to the evolution of the industry and the development of Industry 4.0. As Industry 4.0 is based on digital models of production and processes, having accurate measurements becomes capital. At this point, the metrology field plays an important role as it is a powerful tool to ensure more stable production to reduce scrap and the cost of non-conformities. The most extended measuring instruments that allow us to carry out accurate measurements at these scales are optical microscopes, whether they are traditional, confocal, focus variation microscopes, profile projectors, or any other similar measurement system. However, the accuracy of measurements is connected to the traceability of them to the SI unit of length (the meter). The fact of providing adequate traceability to 2D and 3D dimensional measurements at micro-and nano-scale in industrial environments is a problem that is being studied, and it does not have a unique answer. In addition, if commercial material standards for micro-and nano-scale are considered, we can find that there are two main problems. On the one hand, those material standards that could be considered complete and very interesting do not give traceability of dimensional measurements and, on the other hand, their calibration is very expensive. This situation implies that these kinds of standards will not succeed in industrial environments and, as a result, they will work in the absence of traceability. To solve this problem in industrial environments, it becomes necessary to have material standards that are easy to use, agile, adaptive to different forms, cheap to manufacture and, of course, traceable to the definition of meter with simple methods. By using these ‘customized standards’, it would be possible to adapt and design measuring procedures for each application and manufacturers will work with some traceability. It is important to note that, despite the fact that this traceability is clearly incomplete, this situation is preferable to working in the absence of it. Recently, it has been demonstrated the versatility and the utility of using laser technology and other AM technologies to manufacture customized material standards. In this paper, the authors propose to manufacture a customized material standard using an ultraviolet laser system and a method to calibrate it. To conclude, the results of the calibration carried out in an accredited dimensional metrology laboratory are presented. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=industrial%20environment" title="industrial environment">industrial environment</a>, <a href="https://publications.waset.org/abstracts/search?q=material%20standards" title=" material standards"> material standards</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20measuring%20instrument" title=" optical measuring instrument"> optical measuring instrument</a>, <a href="https://publications.waset.org/abstracts/search?q=traceability" title=" traceability"> traceability</a> </p> <a href="https://publications.waset.org/abstracts/145967/manufacturing-and-calibration-of-material-standards-for-optical-microscopy-in-industrial-environments" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/145967.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">122</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">32</span> Calibration of 2D and 3D Optical Measuring Instruments in Industrial Environments at Submillimeter Range</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alberto%20M%C3%ADnguez-Mart%C3%ADnez">Alberto Mínguez-Martínez</a>, <a href="https://publications.waset.org/abstracts/search?q=Jes%C3%BAs%20de%20Vicente%20y%20Oliva"> Jesús de Vicente y Oliva</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Modern manufacturing processes have led to the miniaturization of systems and, as a result, parts at the micro-and nanoscale are produced. This trend seems to become increasingly important in the near future. Besides, as a requirement of Industry 4.0, the digitalization of the models of production and processes makes it very important to ensure that the dimensions of newly manufactured parts meet the specifications of the models. Therefore, it is possible to reduce the scrap and the cost of non-conformities, ensuring the stability of the production at the same time. To ensure the quality of manufactured parts, it becomes necessary to carry out traceable measurements at scales lower than one millimeter. Providing adequate traceability to the SI unit of length (the meter) to 2D and 3D measurements at this scale is a problem that does not have a unique solution in industrial environments. Researchers in the field of dimensional metrology all around the world are working on this issue. A solution for industrial environments, even if it is not complete, will enable working with some traceability. At this point, we believe that the study of the surfaces could provide us with a first approximation to a solution. Among the different options proposed in the literature, the areal topography methods may be the most relevant because they could be compared to those measurements performed using Coordinate Measuring Machines (CMM’s). These measuring methods give (x, y, z) coordinates for each point, expressing it in two different ways, either expressing the z coordinate as a function of x, denoting it as z(x), for each Y-axis coordinate, or as a function of the x and y coordinates, denoting it as z (x, y). Between others, optical measuring instruments, mainly microscopes, are extensively used to carry out measurements at scales lower than one millimeter because it is a non-destructive measuring method. In this paper, the authors propose a calibration procedure for the scales of optical measuring instruments, particularizing for a confocal microscope, using material standards easy to find and calibrate in metrology and quality laboratories in industrial environments. Confocal microscopes are measuring instruments capable of filtering the out-of-focus reflected light so that when it reaches the detector, it is possible to take pictures of the part of the surface that is focused. Varying and taking pictures at different Z levels of the focus, a specialized software interpolates between the different planes, and it could reconstruct the surface geometry into a 3D model. As it is easy to deduce, it is necessary to give traceability to each axis. As a complementary result, the roughness Ra parameter will be traced to the reference. Although the solution is designed for a confocal microscope, it may be used for the calibration of other optical measuring instruments by applying minor changes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=industrial%20environment" title="industrial environment">industrial environment</a>, <a href="https://publications.waset.org/abstracts/search?q=confocal%20microscope" title=" confocal microscope"> confocal microscope</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20measuring%20instrument" title=" optical measuring instrument"> optical measuring instrument</a>, <a href="https://publications.waset.org/abstracts/search?q=traceability" title=" traceability"> traceability</a> </p> <a href="https://publications.waset.org/abstracts/146140/calibration-of-2d-and-3d-optical-measuring-instruments-in-industrial-environments-at-submillimeter-range" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146140.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">156</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">31</span> Opto-Mechanical Characterization of Aspheric Lenses from the Hybrid Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aliouane%20Toufik">Aliouane Toufik</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamdi%20Amine"> Hamdi Amine</a>, <a href="https://publications.waset.org/abstracts/search?q=Bouzid%20Djamel"> Bouzid Djamel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aspheric optical components are an alternative to the use of conventional lenses in the implementation of imaging systems for the visible range. Spherical lenses are capable of producing aberrations. Therefore, they are not able to focus all the light into a single point. Instead, aspherical lenses correct aberrations and provide better resolution even with compact lenses incorporating a small number of lenses. Metrology of these components is very difficult especially when the resolution requirements increase and insufficient or complexity of conventional tools requires the development of specific approaches to characterization. This work is part of the problem existed because the objectives are the study and comparison of different methods used to measure surface rays hybrid aspherical lenses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=manufacture%20of%20lenses" title="manufacture of lenses">manufacture of lenses</a>, <a href="https://publications.waset.org/abstracts/search?q=aspherical%20surface" title=" aspherical surface"> aspherical surface</a>, <a href="https://publications.waset.org/abstracts/search?q=precision%20molding" title=" precision molding"> precision molding</a>, <a href="https://publications.waset.org/abstracts/search?q=radius%20of%20curvature" title=" radius of curvature"> radius of curvature</a>, <a href="https://publications.waset.org/abstracts/search?q=roughness" title=" roughness "> roughness </a> </p> <a href="https://publications.waset.org/abstracts/8939/opto-mechanical-characterization-of-aspheric-lenses-from-the-hybrid-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8939.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">467</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">30</span> Application of Optical Method Based on Laser Devise as Non-Destructive Testing for Calculus of Mechanical Deformation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Da%C3%AFra">R. Daïra</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Chalvidan"> V. Chalvidan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present the speckle interferometry method to determine the deformation of a piece. This method of holographic imaging using a CCD camera for simultaneous digital recording of two states object and reference. The reconstruction is obtained numerically. This latest method has the advantage of being simpler than the methods currently available, and it does not suffer the holographic configuration faults online. Furthermore, it is entirely digital and avoids heavy analysis after recording the hologram. This work was carried out in the laboratory HOLO 3 (optical metrology laboratory in Saint Louis, France) and it consists in controlling qualitatively and quantitatively the deformation of object by using a camera CCD connected to a computer equipped with software of Fringe Analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=speckle" title="speckle">speckle</a>, <a href="https://publications.waset.org/abstracts/search?q=nondestructive%20testing" title=" nondestructive testing"> nondestructive testing</a>, <a href="https://publications.waset.org/abstracts/search?q=interferometry" title=" interferometry"> interferometry</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20processing" title=" image processing"> image processing</a> </p> <a href="https://publications.waset.org/abstracts/26022/application-of-optical-method-based-on-laser-devise-as-non-destructive-testing-for-calculus-of-mechanical-deformation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26022.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">497</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">29</span> Calibration Methods of Direct and Indirect Reading Pressure Sensor and Uncertainty Determination</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sinem%20O.%20Aktan">Sinem O. Aktan</a>, <a href="https://publications.waset.org/abstracts/search?q=Musa%20Y.%20Akkurt"> Musa Y. Akkurt</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Experimental pressure calibration methods can be classified into three areas: (1) measurements in liquid or gas systems, (2) measurements in static-solid media systems, and (3) measurements in dynamic shock systems. Fluid (liquid and gas) systems high accuracies can be obtainable and commonly used for the calibration method of a pressure sensor. Pressure calibrations can be performed for metrological traceability in two ways, which are on-site (field) and in the laboratory. Laboratory and on-site calibration procedures and the requirements of the DKD-R-6-1 and Euramet cg-17 guidelines will also be addressed. In this study, calibration methods of direct and indirect reading pressure sensor and measurement uncertainty contributions will be explained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pressure%20metrology" title="pressure metrology">pressure metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=pressure%20calibration" title=" pressure calibration"> pressure calibration</a>, <a href="https://publications.waset.org/abstracts/search?q=dead-weight%20tester" title=" dead-weight tester"> dead-weight tester</a>, <a href="https://publications.waset.org/abstracts/search?q=pressure%20uncertainty" title=" pressure uncertainty"> pressure uncertainty</a> </p> <a href="https://publications.waset.org/abstracts/128491/calibration-methods-of-direct-and-indirect-reading-pressure-sensor-and-uncertainty-determination" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128491.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">150</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">28</span> Bi-Lateral Comparison between NIS-Egypt and NMISA-South Africa for the Calibration of an Optical Time Domain Reflectometer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Osama%20Terra">Osama Terra</a>, <a href="https://publications.waset.org/abstracts/search?q=Mariesa%20Nel"> Mariesa Nel</a>, <a href="https://publications.waset.org/abstracts/search?q=Hatem%20Hussein"> Hatem Hussein</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Calibration of Optical Time Domain Reflectometer (OTDR) has a crucial role for the accurate determination of fault locations and the accurate calculation of loss budget of long-haul optical fibre links during installation and repair. A comparison has been made between the Egyptian National Institute for Standards (NIS-Egypt) and the National Metrology institute of South Africa (NMISA-South Africa) for the calibration of an OTDR. The distance and the attenuation scales of a transfer OTDR have been calibrated by both institutes using their standards according to the standard IEC 61746-1 (2009). The results of this comparison have been compiled in this report. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=OTDR%20calibration" title="OTDR calibration">OTDR calibration</a>, <a href="https://publications.waset.org/abstracts/search?q=recirculating%20loop" title=" recirculating loop"> recirculating loop</a>, <a href="https://publications.waset.org/abstracts/search?q=concatenated%20method" title=" concatenated method"> concatenated method</a>, <a href="https://publications.waset.org/abstracts/search?q=standard%20fiber" title=" standard fiber"> standard fiber</a> </p> <a href="https://publications.waset.org/abstracts/56991/bi-lateral-comparison-between-nis-egypt-and-nmisa-south-africa-for-the-calibration-of-an-optical-time-domain-reflectometer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56991.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">448</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">27</span> Measurement of Acoustic Loss in Nano-Layered Coating Developed for Thermal Noise Reduction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=E.%20Cesarini">E. Cesarini</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Lorenzini"> M. Lorenzini</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Cardarelli"> R. Cardarelli</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Chao"> S. Chao</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Coccia"> E. Coccia</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Fafone"> V. Fafone</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Minenkow"> Y. Minenkow</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Nardecchia"> I. Nardecchia</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20M.%20Pinto"> I. M. Pinto</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Rocchi"> A. Rocchi</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Sequino"> V. Sequino</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Taranto"> C. Taranto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Structural relaxation processes in optical coatings represent a fundamental limit to the sensitivity of gravitational waves detectors, MEMS, optical metrology and entangled state experiments. To face this problem, many research lines are now active, in particular the characterization of new materials and novel solutions to be employed as coatings in future gravitational wave detectors. Nano-layered coating deposition is among the most promising techniques. We report on the measurement of acoustic loss of nm-layered composites (Ti<sub>2</sub>O/SiO<sub>2</sub>), performed with the GeNS nodal suspension, compared with sputtered λ/4 thin films nowadays employed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mechanical%20measurement" title="mechanical measurement">mechanical measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=nanomaterials" title=" nanomaterials"> nanomaterials</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20coating" title=" optical coating"> optical coating</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20noise" title=" thermal noise"> thermal noise</a> </p> <a href="https://publications.waset.org/abstracts/45331/measurement-of-acoustic-loss-in-nano-layered-coating-developed-for-thermal-noise-reduction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45331.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">423</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">26</span> Contribution to the Evaluation of Uncertainties of Measurement to the Data Processing Sequences of a Cmm </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hassina%20Gheribi">Hassina Gheribi</a>, <a href="https://publications.waset.org/abstracts/search?q=Salim%20Boukebbab"> Salim Boukebbab </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The measurement of the parts manufactured on CMM (coordinate measuring machine) is based on the association of a surface of perfect geometry to the group of dots palpated via a mathematical calculation of the distances between the palpated points and itself surfaces. Surfaces not being never perfect, they are measured by a number of points higher than the minimal number necessary to define them mathematically. However, the central problems of three-dimensional metrology are the estimate of, the orientation parameters, location and intrinsic of this surface. Including the numerical uncertainties attached to these parameters help the metrologist to make decisions to be able to declare the conformity of the part to specifications fixed on the design drawing. During this paper, we will present a data-processing model in Visual Basic-6 which makes it possible automatically to determine the whole of these parameters, and their uncertainties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coordinate%20measuring%20machines%20%28CMM%29" title="coordinate measuring machines (CMM)">coordinate measuring machines (CMM)</a>, <a href="https://publications.waset.org/abstracts/search?q=associated%20surface" title=" associated surface"> associated surface</a>, <a href="https://publications.waset.org/abstracts/search?q=uncertainties%20of%20measurement" title=" uncertainties of measurement"> uncertainties of measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=acquisition%20and%20%20modeling" title=" acquisition and modeling"> acquisition and modeling</a> </p> <a href="https://publications.waset.org/abstracts/38626/contribution-to-the-evaluation-of-uncertainties-of-measurement-to-the-data-processing-sequences-of-a-cmm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38626.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">327</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">25</span> Calibration of a Large Standard Step Height with Low Sampled Coherence Scanning Interferometry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dahi%20Ghareab%20Abdelsalam%20Ibrahim">Dahi Ghareab Abdelsalam Ibrahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Scanning interferometry is commonly used for measuring the three-dimensional profiling of surfaces. Here, we used a scanning stage calibrated with standard gauge blocks to measure a standard step height of 200μm. The stage measures precisely the envelope of interference at the platen and at the surface of the step height. From the difference between the two envelopes, we measured the step height of the sample. Experimental measurements show that the measured value matches well with the nominal value of the step height. A light beam of 532nm from a Tungsten Lamp is collimated and incident on the interferometer. By scanning, two envelopes were produced. The envelope at the platen surface and the envelope at the object surface were determined precisely by a written program code, and then the difference between them was measured from the calibrated scanning stage. The difference was estimated to be in the range of 198 ± 2 μm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=optical%20metrology" title="optical metrology">optical metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=digital%20holography" title=" digital holography"> digital holography</a>, <a href="https://publications.waset.org/abstracts/search?q=interferometry" title=" interferometry"> interferometry</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20unwrapping" title=" phase unwrapping"> phase unwrapping</a> </p> <a href="https://publications.waset.org/abstracts/161440/calibration-of-a-large-standard-step-height-with-low-sampled-coherence-scanning-interferometry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161440.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">73</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">24</span> Feasibility Study of Measurement of Turning Based-Surfaces Using Perthometer, Optical Profiler and Confocal Sensor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khavieya%20Anandhan">Khavieya Anandhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Soundarapandian%20Santhanakrishnan"> Soundarapandian Santhanakrishnan</a>, <a href="https://publications.waset.org/abstracts/search?q=Vijayaraghavan%20Laxmanan"> Vijayaraghavan Laxmanan </a> </p> <p class="card-text"><strong>Abstract:</strong></p> In general, measurement of surfaces is carried out by using traditional methods such as contact type stylus instruments. This prevalent approach is challenged by using non-contact instruments such as optical profiler, co-ordinate measuring machine, laser triangulation sensors, machine vision system, etc. Recently, confocal sensor is trying to be used in the surface metrology field. This sensor, such as a confocal sensor, is explored in this study to determine the surface roughness value for various turned surfaces. Turning is a crucial machining process to manufacture products such as grooves, tapered domes, threads, tapers, etc. The roughness value of turned surfaces are in the range of range 0.4-12.5 µm, were taken for analysis. Three instruments were used, namely, perthometer, optical profiler, and confocal sensor. Among these, in fact, a confocal sensor is least explored, despite its good resolution about 5 nm. Thus, such a high-precision sensor was used in this study to explore the possibility of measuring turned surfaces. Further, using this data, measurement uncertainty was also studied. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=confocal%20sensor" title="confocal sensor">confocal sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20profiler" title=" optical profiler"> optical profiler</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20roughness" title=" surface roughness"> surface roughness</a>, <a href="https://publications.waset.org/abstracts/search?q=turned%20surfaces" title=" turned surfaces"> turned surfaces</a> </p> <a href="https://publications.waset.org/abstracts/116230/feasibility-study-of-measurement-of-turning-based-surfaces-using-perthometer-optical-profiler-and-confocal-sensor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116230.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">134</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">23</span> The Pitch Diameter of Pipe Taper Thread Measurement and Uncertainty Using Three-Wire Probe</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20Kloypayan">J. Kloypayan</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Pimpakan"> W. Pimpakan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The pipe taper thread measurement and uncertainty normally used the four-wire probe according to the JIS B 0262. Besides, according to the EA-10/10 standard, the pipe thread could be measured using the three-wire probe. This research proposed to use the three-wire probe measuring the pitch diameter of the pipe taper thread. The measuring accessory component was designed and made, then, assembled to one side of the ULM 828 CiM machine. Therefore, this machine could be used to measure and calibrate both the pipe thread and the pipe taper thread. The equations and the expanded uncertainty for pitch diameter measurement were formulated. After the experiment, the results showed that the pipe taper thread had the pitch diameter equal to 19.165 mm and the expanded uncertainty equal to 1.88µm. Then, the experiment results were compared to the results from the National Institute of Metrology Thailand. The equivalence ratio from the comparison showed that both results were related. Thus, the proposed method of using the three-wire probe measured the pitch diameter of the pipe taper thread was acceptable. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pipe%20taper%20thread" title="pipe taper thread">pipe taper thread</a>, <a href="https://publications.waset.org/abstracts/search?q=three-wire%20probe" title=" three-wire probe"> three-wire probe</a>, <a href="https://publications.waset.org/abstracts/search?q=measure%20and%20calibration" title=" measure and calibration"> measure and calibration</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20universal%20length%20measuring%20machine" title=" the universal length measuring machine"> the universal length measuring machine</a> </p> <a href="https://publications.waset.org/abstracts/2496/the-pitch-diameter-of-pipe-taper-thread-measurement-and-uncertainty-using-three-wire-probe" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2496.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">406</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">22</span> Step Height Calibration Using Hamming Window: Band-Pass Filter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dahi%20Ghareab%20Abdelsalam%20Ibrahim">Dahi Ghareab Abdelsalam Ibrahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Calibration of step heights with high accuracy is needed for many applications in the industry. In general, step height consists of three bands: pass band, transition band (roll-off), and stop band. Abdelsalam used a convolution of the transfer functions of both Chebyshev type 2 and elliptic filters with WFF of the Fresnel transform in the frequency domain for producing a steeper roll-off with the removal of ripples in the pass band- and stop-bands. In this paper, we used a new method based on the Hamming window: band-pass filter for calibration of step heights in terms of perfect adjustment of pass-band, roll-off, and stop-band. The method is applied to calibrate a nominal step height of 40 cm. The step height is measured first by asynchronous dual-wavelength phase-shift interferometry. The measured step height is then calibrated by the simulation of the Hamming window: band-pass filter. The spectrum of the simulated band-pass filter is simulated at N = 881 and f0 = 0.24. We can conclude that the proposed method can calibrate any step height by adjusting only two factors which are N and f0. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=optical%20metrology" title="optical metrology">optical metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=step%20heights" title=" step heights"> step heights</a>, <a href="https://publications.waset.org/abstracts/search?q=hamming%20window" title=" hamming window"> hamming window</a>, <a href="https://publications.waset.org/abstracts/search?q=band-pass%20filter" title=" band-pass filter"> band-pass filter</a> </p> <a href="https://publications.waset.org/abstracts/168134/step-height-calibration-using-hamming-window-band-pass-filter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/168134.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">83</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">21</span> Inter Laboratory Comparison with Coordinate Measuring Machine and Uncertainty Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tugrul%20%20Torun">Tugrul Torun</a>, <a href="https://publications.waset.org/abstracts/search?q=Ihsan%20A.%20Yuksel"> Ihsan A. Yuksel</a>, <a href="https://publications.waset.org/abstracts/search?q=Si%CC%87nem%20On%20Aktan"> Si̇nem On Aktan</a>, <a href="https://publications.waset.org/abstracts/search?q=Taha%20K.%20Vezi%CC%87roglu"> Taha K. Vezi̇roglu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the quality control processes in some industries, the usage of CMM has increased in recent years. Consequently, the CMMs play important roles in the acceptance or rejection of manufactured parts. For parts, it’s important to be able to make decisions by performing fast measurements. According to related technical drawing and its tolerances, measurement uncertainty should also be considered during assessment. Since uncertainty calculation is difficult and time-consuming, most companies ignore the uncertainty value in their routine inspection method. Although studies on measurement uncertainty have been carried out on CMM’s in recent years, there is still no applicable method for analyzing task-specific measurement uncertainty. There are some standard series for calculating measurement uncertainty (ISO-15530); it is not possible to use it in industrial measurement because it is not a practical method for standard measurement routine. In this study, the inter-laboratory comparison test has been carried out in the ROKETSAN A.Ş. with all dimensional inspection units. The reference part that we used is traceable to the national metrology institute TUBİTAK UME. Each unit has measured reference parts according to related technical drawings, and the task-specific measuring uncertainty has been calculated with related parameters. According to measurement results and uncertainty values, the En values have been calculated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coordinate%20measurement" title="coordinate measurement">coordinate measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=CMM" title=" CMM"> CMM</a>, <a href="https://publications.waset.org/abstracts/search?q=comparison" title=" comparison"> comparison</a>, <a href="https://publications.waset.org/abstracts/search?q=uncertainty" title=" uncertainty"> uncertainty</a> </p> <a href="https://publications.waset.org/abstracts/136496/inter-laboratory-comparison-with-coordinate-measuring-machine-and-uncertainty-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/136496.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">211</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">20</span> Effect of Birks Constant and Defocusing Parameter on Triple-to-Double Coincidence Ratio Parameter in Monte Carlo Simulation-GEANT4</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Farmesk%20Abubaker">Farmesk Abubaker</a>, <a href="https://publications.waset.org/abstracts/search?q=Francesco%20Tortorici"> Francesco Tortorici</a>, <a href="https://publications.waset.org/abstracts/search?q=Marco%20Capogni"> Marco Capogni</a>, <a href="https://publications.waset.org/abstracts/search?q=Concetta%20Sutera"> Concetta Sutera</a>, <a href="https://publications.waset.org/abstracts/search?q=Vincenzo%20Bellini"> Vincenzo Bellini</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This project concerns with the detection efficiency of the portable triple-to-double coincidence ratio (TDCR) at the National Institute of Metrology of Ionizing Radiation (INMRI-ENEA) which allows direct activity measurement and radionuclide standardization for pure-beta emitter or pure electron capture radionuclides. The dependency of the simulated detection efficiency of the TDCR, by using Monte Carlo simulation Geant4 code, on the Birks factor (kB) and defocusing parameter has been examined especially for low energy beta-emitter radionuclides such as 3H and 14C, for which this dependency is relevant. The results achieved in this analysis can be used for selecting the best kB factor and the defocusing parameter for computing theoretical TDCR parameter value. The theoretical results were compared with the available ones, measured by the ENEA TDCR portable detector, for some pure-beta emitter radionuclides. This analysis allowed to improve the knowledge of the characteristics of the ENEA TDCR detector that can be used as a traveling instrument for in-situ measurements with particular benefits in many applications in the field of nuclear medicine and in the nuclear energy industry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Birks%20constant" title="Birks constant">Birks constant</a>, <a href="https://publications.waset.org/abstracts/search?q=defocusing%20parameter" title=" defocusing parameter"> defocusing parameter</a>, <a href="https://publications.waset.org/abstracts/search?q=GEANT4%20code" title=" GEANT4 code"> GEANT4 code</a>, <a href="https://publications.waset.org/abstracts/search?q=TDCR%20parameter" title=" TDCR parameter"> TDCR parameter</a> </p> <a href="https://publications.waset.org/abstracts/131757/effect-of-birks-constant-and-defocusing-parameter-on-triple-to-double-coincidence-ratio-parameter-in-monte-carlo-simulation-geant4" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131757.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">148</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19</span> Multifunctional Polydopamine-Silver-Polydopamine Nanofilm With Applications in Digital Microfluidics and SERS</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yilei%20Xue">Yilei Xue</a>, <a href="https://publications.waset.org/abstracts/search?q=Yat-Hing%20Ham"> Yat-Hing Ham</a>, <a href="https://publications.waset.org/abstracts/search?q=Wenting%20Qiu"> Wenting Qiu</a>, <a href="https://publications.waset.org/abstracts/search?q=Wan%20Chan"> Wan Chan</a>, <a href="https://publications.waset.org/abstracts/search?q=Stefan%20Nagl"> Stefan Nagl</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Polydopamine (PDA) is a popular material in biological and medical applications due to its excellent biocompatibility, outstanding physicochemical properties, and facile fabrication. In this project, a new sandwich-structured PDA and silver (Ag) hybrid material named PDA-Ag-PDA was synthesized and characterized layer-by-layer, where silver nanoparticles (Ag NPs) are wrapped in PDA coatings, using SEM, AFM, 3D surface metrology, and contact angle meter. The silver loading capacity is positively proportional to the roughness value of the initial PDA film. This designed film was subsequently integrated within a digital microfluidic (DMF) platform coupling with an oxygen sensor layer for on-chip antibacterial assay. The concentration of E. coli was quantified on DMF by real-time monitoring oxygen consumption during E. coli growth with the optical oxygen sensor layer. The PDA-Ag-PDA coating shows an 99.9% reduction in E. coli population under non-nutritive condition with 1-hour treatment and has a strong growth inhibition of E. coliin nutrient LB broth as well. Furthermore, PDA-Ag-PDA film maintaining a low cytotoxicity effect to human cells. After treating with PDA-Ag-PDA film for 24 hours, 82% HEK 293 and 86% HeLa cells were viable. The SERS enhancement factor of PDA-Ag-PDA is estimated to be 1.9 × 104 using Rhodamine 6G (R6G). Multifunctional PDA-Ag-PDA coating provides an alternative platform to conjugate biomolecules and perform biological applications on DMF, in particular, for the adhesive protein and cell study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=polydopamine" title="polydopamine">polydopamine</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20nanoparticles" title=" silver nanoparticles"> silver nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=digital%20microfluidic" title=" digital microfluidic"> digital microfluidic</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20sensor" title=" optical sensor"> optical sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20assay" title=" antimicrobial assay"> antimicrobial assay</a>, <a href="https://publications.waset.org/abstracts/search?q=SERS" title=" SERS"> SERS</a> </p> <a href="https://publications.waset.org/abstracts/153319/multifunctional-polydopamine-silver-polydopamine-nanofilm-with-applications-in-digital-microfluidics-and-sers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/153319.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">93</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">18</span> External Noise Distillation in Quantum Holography with Undetected Light</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sebastian%20T%C3%B6pfer">Sebastian Töpfer</a>, <a href="https://publications.waset.org/abstracts/search?q=Jorge%20Fuenzalida"> Jorge Fuenzalida</a>, <a href="https://publications.waset.org/abstracts/search?q=Marta%20Gilaberte%20Basset"> Marta Gilaberte Basset</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20P.%20Torres"> Juan P. Torres</a>, <a href="https://publications.waset.org/abstracts/search?q=Markus%20Gr%C3%A4fe"> Markus Gräfe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work presents an experimental and theoretical study about the noise resilience of quantum holography with undetected photons. Quantum imaging has become an important research topic in the recent years after its first publication in 2014. Following this research, advances towards different spectral ranges in detection and different optical geometries have been made. Especially an interest in the field of near infrared to mid infrared measurements has developed, because of the unique characteristic, that allows to sample a probe with photons in a different wavelength than the photons arriving at the detector. This promising effect can be used for medical applications, to measure in the so-called molecule fingerprint region, while using broadly available detectors for the visible spectral range. Further advance the development of quantum imaging methods have been made by new measurement and detection schemes. One of which is quantum holography with undetected light. It combines digital phase shifting holography with quantum imaging to extent the obtainable sample information, by measuring not only the object transmission, but also its influence on the phase shift experienced by the transmitted light. This work will present extended research for the quantum holography with undetected light scheme regarding the influence of external noise. It is shown experimentally and theoretically that the samples information can still be at noise levels of 250 times higher than the signal level, because of its information being transmitted by the interferometric pattern. A detailed theoretic explanation is also provided. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=distillation" title="distillation">distillation</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20holography" title=" quantum holography"> quantum holography</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20imaging" title=" quantum imaging"> quantum imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20metrology" title=" quantum metrology"> quantum metrology</a> </p> <a href="https://publications.waset.org/abstracts/172761/external-noise-distillation-in-quantum-holography-with-undetected-light" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/172761.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">75</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17</span> Accuracy/Precision Evaluation of Excalibur I: A Neurosurgery-Specific Haptic Hand Controller</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamidreza%20Hoshyarmanesh">Hamidreza Hoshyarmanesh</a>, <a href="https://publications.waset.org/abstracts/search?q=Benjamin%20Durante"> Benjamin Durante</a>, <a href="https://publications.waset.org/abstracts/search?q=Alex%20Irwin"> Alex Irwin</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanju%20Lama"> Sanju Lama</a>, <a href="https://publications.waset.org/abstracts/search?q=Kourosh%20Zareinia"> Kourosh Zareinia</a>, <a href="https://publications.waset.org/abstracts/search?q=Garnette%20R.%20Sutherland"> Garnette R. Sutherland</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study reports on a proposed method to evaluate the accuracy and precision of Excalibur I, a neurosurgery-specific haptic hand controller, designed and developed at Project neuroArm. Having an efficient and successful robot-assisted telesurgery is considerably contingent on how accurate and precise a haptic hand controller (master/local robot) would be able to interpret the kinematic indices of motion, i.e., position and orientation, from the surgeon’s upper limp to the slave/remote robot. A proposed test rig is designed and manufactured according to standard ASTM F2554-10 to determine the accuracy and precision range of Excalibur I at four different locations within its workspace: central workspace, extreme forward, far left and far right. The test rig is metrologically characterized by a coordinate measuring machine (accuracy and repeatability < ± 5 µm). Only the serial linkage of the haptic device is examined due to the use of the Structural Length Index (SLI). The results indicate that accuracy decreases by moving from the workspace central area towards the borders of the workspace. In a comparative study, Excalibur I performs on par with the PHANToM PremiumTM 3.0 and more accurate/precise than the PHANToM PremiumTM 1.5. The error in Cartesian coordinate system shows a dominant component in one direction (δx, δy or δz) for the movements on horizontal, vertical and inclined surfaces. The average error magnitude of three attempts is recorded, considering all three error components. This research is the first promising step to quantify the kinematic performance of Excalibur I. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=accuracy" title="accuracy">accuracy</a>, <a href="https://publications.waset.org/abstracts/search?q=advanced%20metrology" title=" advanced metrology"> advanced metrology</a>, <a href="https://publications.waset.org/abstracts/search?q=hand%20controller" title=" hand controller"> hand controller</a>, <a href="https://publications.waset.org/abstracts/search?q=precision" title=" precision"> precision</a>, <a href="https://publications.waset.org/abstracts/search?q=robot-assisted%20surgery" title=" robot-assisted surgery"> robot-assisted surgery</a>, <a href="https://publications.waset.org/abstracts/search?q=tele-operation" title=" tele-operation"> tele-operation</a>, <a href="https://publications.waset.org/abstracts/search?q=workspace" title=" workspace"> workspace</a> </p> <a href="https://publications.waset.org/abstracts/86416/accuracyprecision-evaluation-of-excalibur-i-a-neurosurgery-specific-haptic-hand-controller" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86416.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">336</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=metrology&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=metrology&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div 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