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lignt emitting diode</title> <meta name="description" content="Search results for: polymer lignt emitting diode"> <meta name="keywords" content="polymer lignt emitting diode"> <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 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action="https://publications.waset.org/abstracts/search"> <div 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="polymer lignt emitting diode"> <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> 1832</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: polymer lignt emitting diode</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1832</span> Modeling and Characterization of Organic LED</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bouanati%20Sidi%20Mohammed">Bouanati Sidi Mohammed</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20E.%20Chabane%20Sari"> N. E. Chabane Sari</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostefa%20Kara%20Selma"> Mostefa Kara Selma </a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is well-known that Organic light emitting diodes (OLEDs) are attracting great interest in the display technology industry due to their many advantages, such as low price of manufacturing, large-area of electroluminescent display, various colors of emission included white light. Recently, there has been much progress in understanding the device physics of OLEDs and their basic operating principles. In OLEDs, Light emitting is the result of the recombination of electron and hole in light emitting layer, which are injected from cathode and anode. For improve luminescence efficiency, it is needed that hole and electron pairs exist affluently and equally and recombine swiftly in the emitting layer. The aim of this paper is to modeling polymer LED and OLED made with small molecules for studying the electrical and optical characteristics. The first simulation structures used in this paper is a mono layer device; typically consisting of the poly (2-methoxy-5(2’-ethyl) hexoxy-phenylenevinylene) (MEH-PPV) polymer sandwiched between an anode usually an indium tin oxide (ITO) substrate, and a cathode, such as Al. In the second structure we replace MEH-PPV by tris (8-hydroxyquinolinato) aluminum (Alq3). We choose MEH-PPV because of it's solubility in common organic solvents, in conjunction with a low operating voltage for light emission and relatively high conversion efficiency and Alq3 because it is one of the most important host materials used in OLEDs. In this simulation, the Poole-Frenkel- like mobility model and the Langevin bimolecular recombination model have been used as the transport and recombination mechanism. These models are enabled in ATLAS -SILVACO software. The influence of doping and thickness on I(V) characteristics and luminescence, are reported. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=organic%20light%20emitting%20diode" title="organic light emitting diode">organic light emitting diode</a>, <a href="https://publications.waset.org/abstracts/search?q=polymer%20lignt%20emitting%20diode" title=" polymer lignt emitting diode"> polymer lignt emitting diode</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20materials" title=" organic materials"> organic materials</a>, <a href="https://publications.waset.org/abstracts/search?q=hexoxy-phenylenevinylene" title=" hexoxy-phenylenevinylene"> hexoxy-phenylenevinylene</a> </p> <a href="https://publications.waset.org/abstracts/29434/modeling-and-characterization-of-organic-led" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29434.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">554</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">1831</span> Flip-Chip Bonding for Monolithic of Matrix-Addressable GaN-Based Micro-Light-Emitting Diodes Array</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chien-Ju%20Chen">Chien-Ju Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Chia-Jui%20Yu"> Chia-Jui Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Jyun-Hao%20Liao"> Jyun-Hao Liao</a>, <a href="https://publications.waset.org/abstracts/search?q=Chia-Ching%20Wu"> Chia-Ching Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Meng-Chyi%20Wu"> Meng-Chyi Wu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A 64 × 64 GaN-based micro-light-emitting diode array (μLEDA) with 20 μm in pixel size and 40 μm in pitch by flip-chip bonding (FCB) is demonstrated in this study. Besides, an underfilling (UF) technology is applied to the process for improving the uniformity of device. With those configurations, good characteristics are presented, operation voltage and series resistance of a pixel in the 450 nm flip chip μLEDA are 2.89 V and 1077Ω (4.3 mΩ-cm²) at 25 A/cm², respectively. The μLEDA can sustain higher current density compared to conventional LED, and the power of the device is 9.5 μW at 100 μA and 0.42 mW at 20 mA. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GaN" title="GaN">GaN</a>, <a href="https://publications.waset.org/abstracts/search?q=micro-light-emitting%20diode%20array%28%CE%BCLEDA%29" title=" micro-light-emitting diode array(μLEDA)"> micro-light-emitting diode array(μLEDA)</a>, <a href="https://publications.waset.org/abstracts/search?q=flip-chip%20bonding" title=" flip-chip bonding"> flip-chip bonding</a>, <a href="https://publications.waset.org/abstracts/search?q=underfilling" title=" underfilling"> underfilling</a> </p> <a href="https://publications.waset.org/abstracts/73765/flip-chip-bonding-for-monolithic-of-matrix-addressable-gan-based-micro-light-emitting-diodes-array" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/73765.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">422</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">1830</span> An Improved Visible Range Absorption Spectroscopy on Soil Macronutrient </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Suhaila%20Isaak">Suhaila Isaak</a>, <a href="https://publications.waset.org/abstracts/search?q=Yusmeeraz%20Yusof"> Yusmeeraz Yusof</a>, <a href="https://publications.waset.org/abstracts/search?q=Khairunnisa%20Mohd%20Yusof"> Khairunnisa Mohd Yusof</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Safuan%20Abdul%20Rashid"> Ahmad Safuan Abdul Rashid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Soil fertility is commonly evaluated by soil macronutrients such as nitrate, potassium, and phosphorus contents. Optical spectroscopy is an emerging technology which is rapid and simple has been widely used in agriculture to measure soil fertility. For visible and near infrared absorption spectroscopy, the absorbed light level in is useful for soil macro-nutrient measurement. This is because the absorption of light in a soil sample influences sensitivity of the measurement. This paper reports the performance of visible and near infrared absorption spectroscopy in the 400–1400 nm wavelength range using light-emitting diode as the excitation light source to predict the soil macronutrient content of nitrate, potassium, and phosphorus. The experimental results show an improved linear regression analysis of various soil specimens based on the Beer–Lambert law to determine sensitivity of soil spectroscopy by evaluating the absorption of characteristic peaks emitted from a light-emitting diode and detected by high sensitivity optical spectrometer. This would denote in developing a simple and low-cost soil spectroscopy with light-emitting diode for future implementation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=macronutrients%20absorption" title="macronutrients absorption">macronutrients absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20spectroscopy" title=" optical spectroscopy"> optical spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=soil" title=" soil"> soil</a>, <a href="https://publications.waset.org/abstracts/search?q=absorption" title=" absorption"> absorption</a> </p> <a href="https://publications.waset.org/abstracts/78092/an-improved-visible-range-absorption-spectroscopy-on-soil-macronutrient" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78092.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">293</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">1829</span> Light-Emitting Diode Assisted Synthesis of Ag@Fe3O4 Nanoparticles and Their Application in Magnetic and Photothermal Hyperthermia Therapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pei-Wen%20Lin">Pei-Wen Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ta-I%20Yang"> Ta-I Yang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cancer has been one of the leading causes of human death for centuries. Considerable effort has been devoted to developing new treatments to reduce and control cancers. Magnetic particle hyperthermia and near-infrared photothermal therapy are the promising strategies to treat cancers due to its effectiveness with only mild side effects. This study focused on synthesizing magnetic Ag@Fe3O4 nanoparticles applicable for both of magnetic hyperthermia and near-infrared photothermal therapy. The hydrophilic poly(diallyldimethylammonium chloride) polymer was utilized to prepare superparamagnetic Fe3O4 clusters and to promote silver nanoparticles grown on Fe3O4 surfaces, obtaining Ag@Fe3O4 nanoparticles. The morphology (shape and dimension) of Ag nanoparticles was subsequently tailored using commercial LED lights. Therefore, the resulting Ag@Fe3O4 nanoparticles can absorb specific wavelength of light ranging from 400 nm to 800 nm by adjusting the wavelength of LED lights and the free silver ions in reaction solution. Heating performance tests confirmed that the synthesized Ag@Fe3O4 nanoparticles show appreciable heating capability for both of magnetic particle hyperthermia and near-infrared photothermal therapy. The findings in this study could provide new ideas to design functional materials to treat cancers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=light-emitting%20diode%20assisted%20synthesis" title="light-emitting diode assisted synthesis">light-emitting diode assisted synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20particles" title=" magnetic particles"> magnetic particles</a>, <a href="https://publications.waset.org/abstracts/search?q=photothermal%20materials" title=" photothermal materials"> photothermal materials</a>, <a href="https://publications.waset.org/abstracts/search?q=hyperthermia" title=" hyperthermia"> hyperthermia</a> </p> <a href="https://publications.waset.org/abstracts/56976/light-emitting-diode-assisted-synthesis-of-ag-at-fe3o4-nanoparticles-and-their-application-in-magnetic-and-photothermal-hyperthermia-therapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56976.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">284</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">1828</span> Flexible and Color Tunable Inorganic Light Emitting Diode Array for High Resolution Optogenetic Devices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Keundong%20Lee">Keundong Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Dongha%20Yoo"> Dongha Yoo</a>, <a href="https://publications.waset.org/abstracts/search?q=Youngbin%20Tchoe"> Youngbin Tchoe</a>, <a href="https://publications.waset.org/abstracts/search?q=Gyu-Chul%20Yi"> Gyu-Chul Yi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Light emitting diode (LED) array is an ideal optical stimulation tool for optogenetics, which controls inhibition and excitation of specific neurons with light-sensitive ion channels or pumps. Although a ﬁber-optic cable with an external light source, either a laser or LED mechanically connected to the end of the ﬁber-optic cable has widely been used for illumination on neural tissue, a new approach to use micro LEDs (µLEDs) has recently been demonstrated. The LEDs can be placed directly either on the cortical surface or within the deep brain using a penetrating depth probe. Accordingly, this method would not need a permanent opening in the skull if the LEDs are integrated with miniature electrical power source and wireless communication. In addition, multiple color generation from single µLED cell would enable to excite and/or inhibit neurons in localized regions. Here, we demonstrate flexible and color tunable µLEDs for the optogenetic device applications. The flexible and color tunable LEDs was fabricated using multifaceted gallium nitride (GaN) nanorod arrays with GaN nanorods grown on InxGa1−xN/GaN single quantum well structures (SQW) anisotropically formed on the nanorod tips and sidewalls. For various electroluminescence (EL) colors, current injection paths were controlled through a continuous p-GaN layer depending on the applied bias voltage. The electric current was injected through different thickness and composition, thus changing the color of light from red to blue that the LED emits. We believe that the flexible and color tunable µLEDs enable us to control activities of the neuron by emitting various colors from the single µLED cell. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=light%20emitting%20diode" title="light emitting diode">light emitting diode</a>, <a href="https://publications.waset.org/abstracts/search?q=optogenetics" title=" optogenetics"> optogenetics</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene" title=" graphene"> graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=flexible%20optoelectronics" title=" flexible optoelectronics"> flexible optoelectronics</a> </p> <a href="https://publications.waset.org/abstracts/72857/flexible-and-color-tunable-inorganic-light-emitting-diode-array-for-high-resolution-optogenetic-devices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72857.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">1827</span> Investigating the Energy Gap and Wavelength of (AlₓGa₁₋ₓAs)ₘ/(GaAs)ₙ Superlattices in Terms of Material Thickness and Al Mole Fraction Using Empirical Tight-Binding Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Matineh%20Sadat%20Hosseini%20Gheidari">Matineh Sadat Hosseini Gheidari</a>, <a href="https://publications.waset.org/abstracts/search?q=Vahid%20Reza%20Yazdanpanah"> Vahid Reza Yazdanpanah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we used the empirical tight-binding method (ETBM) with sp3s* approximation and considering the first nearest neighbor with spin-orbit interactions in order to model superlattice structure (SLS) of (AlₓGa₁₋ₓAs)ₘ/(GaAs)ₙ grown on GaAs (100) substrate at 300K. In the next step, we investigated the behavior of the energy gap and wavelength of this superlattice in terms of different thicknesses of core materials and Al mole fractions. As a result of this survey, we found out that as the Al composition increases, the energy gap of this superlattice has an upward trend and ranges from 1.42-1.63 eV. Also, according to the wavelength range that we gained from this superlattice in different Al mole fractions and various thicknesses, we can find a suitable semiconductor for a special light-emitting diode (LED) application. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=energy%20gap" title="energy gap">energy gap</a>, <a href="https://publications.waset.org/abstracts/search?q=empirical%20tight-binding%20method" title=" empirical tight-binding method"> empirical tight-binding method</a>, <a href="https://publications.waset.org/abstracts/search?q=light-emitting%20diode" title=" light-emitting diode"> light-emitting diode</a>, <a href="https://publications.waset.org/abstracts/search?q=superlattice" title=" superlattice"> superlattice</a>, <a href="https://publications.waset.org/abstracts/search?q=wavelength" title=" wavelength"> wavelength</a> </p> <a href="https://publications.waset.org/abstracts/134686/investigating-the-energy-gap-and-wavelength-of-alga1asgaas-superlattices-in-terms-of-material-thickness-and-al-mole-fraction-using-empirical-tight-binding-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/134686.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">205</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">1826</span> Simulation and Characterization of Organic Light Emitting Diodes and Organic Photovoltaics Using Physics Based Tool</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20A.%20Shahul%20Hameed">T. A. Shahul Hameed</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Predeep"> P. Predeep</a>, <a href="https://publications.waset.org/abstracts/search?q=Anju%20Iqbal"> Anju Iqbal</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Baiju"> M. R. Baiju</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Research and development in organic photovoltaic cells and Organic Light Emitting Diodes have gained wider acceptance due to the advent of many advanced techniques to enhance the efficiency and operational hours. Here we report our work on design, simulation and characterizationracterize the bulk heterojunction organic photo cell and polymer light emitting diodes in different layer configurations using ATLAS, a licensed device simulation tool. Bulk heterojuction and multilayer devices were simulated for comparing their performance parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=HOMO" title="HOMO">HOMO</a>, <a href="https://publications.waset.org/abstracts/search?q=LUMO" title=" LUMO"> LUMO</a>, <a href="https://publications.waset.org/abstracts/search?q=PLED" title=" PLED"> PLED</a>, <a href="https://publications.waset.org/abstracts/search?q=OPV" title=" OPV"> OPV</a> </p> <a href="https://publications.waset.org/abstracts/18873/simulation-and-characterization-of-organic-light-emitting-diodes-and-organic-photovoltaics-using-physics-based-tool" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18873.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">585</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">1825</span> LEDs Based Indoor Positioning by Distances Derivation from Lambertian Illumination Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yan-Ren%20Chen">Yan-Ren Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Jenn-Kaie%20Lain"> Jenn-Kaie Lain</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper proposes a novel indoor positioning algorithm based on visible light communications, implemented by light-emitting diode fixtures. In the proposed positioning algorithm, distances between light-emitting diode fixtures and mobile terminal are derived from the assumption of ideal Lambertian optic radiation model, and Trilateration positioning method is proceeded immediately to get the coordinates of mobile terminal. The proposed positioning algorithm directly obtains distance information from the optical signal modeling, and therefore, statistical distribution of received signal strength at different positions in interior space has no need to be pre-established. Numerically, simulation results have shown that the proposed indoor positioning algorithm can provide accurate location coordinates estimation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=indoor%20positioning" title="indoor positioning">indoor positioning</a>, <a href="https://publications.waset.org/abstracts/search?q=received%20signal%20strength" title=" received signal strength"> received signal strength</a>, <a href="https://publications.waset.org/abstracts/search?q=trilateration" title=" trilateration"> trilateration</a>, <a href="https://publications.waset.org/abstracts/search?q=visible%20light%20communications" title=" visible light communications"> visible light communications</a> </p> <a href="https://publications.waset.org/abstracts/10276/leds-based-indoor-positioning-by-distances-derivation-from-lambertian-illumination-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10276.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">411</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">1824</span> Efficacy of Light-Emitting Diode-Mediated Photobiomodulation in Tendon Healing in a Murine Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sukwoong%20Kang">Sukwoong Kang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: The application of light-emitting diode (LED)-dependent photobiomodulation (PBM) in promoting post-tendon injury healing has been recently reported. Despite the establishment of a theoretical basis for ligament restoration through PBM, the lack of any empirical evidence deems this therapeutic strategy contentious. Therefore, the aim of this study was to investigate the potency of LED-based PBM in facilitating tendon healing in a murine model. Methods: Migration kinetics were analyzed at two specific wavelengths: 630 and 880 nm. The Achilles tendon in the hind limbs of Balb/c mice was severed via Achilles tendon transection. Subsequently, the mice were randomized into LED non-irradiation and LED irradiation groups. Mice with intact tendons were employed as healthy controls. The wounds were LED-irradiated for 20 min daily for two days. Histological properties, tendon healing mediators, and inflammatory mediators were screened on day 14. Results: The roundness of the nuclei and fiber structure, indicating the degree of infiltrated inflammatory cells and severity of fiber fragmentation, respectively, were considerably lower in the LED irradiation group than in the LED non-irradiation group. Immunohistochemical analysis depicted an increase in tenocytes (SCX+ cells) and a recovery of wounds with reduced fibrosis (lower collagen 3 and TGF-β1) in the LED irradiation group during healing; conversely, the LED non-irradiation group exhibited tissue fibrosis. The ratio of M2 macrophages to total macrophages was higher in the LED irradiation group than in the injured group. Conclusion: LED-based PBM in the Achilles tendon rupture murine model effectuated a rapid restoration of histological and immunochemical outcomes. The aforementioned findings suggest that LED-based PBM presents remarkable potential as an adjunct therapeutic for tendon healing and warrants further research to standardize various parameters to advance and establish it as a reliable treatment regime. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photobiomodulation" title="photobiomodulation">photobiomodulation</a>, <a href="https://publications.waset.org/abstracts/search?q=light-emitting%20diode" title=" light-emitting diode"> light-emitting diode</a>, <a href="https://publications.waset.org/abstracts/search?q=tendon" title=" tendon"> tendon</a>, <a href="https://publications.waset.org/abstracts/search?q=regeneration" title=" regeneration"> regeneration</a> </p> <a href="https://publications.waset.org/abstracts/185349/efficacy-of-light-emitting-diode-mediated-photobiomodulation-in-tendon-healing-in-a-murine-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185349.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">44</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">1823</span> Color Conversion Films with CuInS2/ZnS Quantum Dots Embedded Polystyrene Nanofibers by Electrospinning Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wonkyung%20Na">Wonkyung Na</a>, <a href="https://publications.waset.org/abstracts/search?q=Namhun%20Kim"> Namhun Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Heeyeop%20Chae"> Heeyeop Chae</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Quantum dots (QDs) are getting attentions due to their excellent optical properties in display, solar cell, biomolecule detection and lighting applications. Energy band gap can be easilty controlled by controlling their size and QDs are proper to apply in light-emitting-diode(LED) and lighting application, especially. Typically cadmium (Cd) containing QDs show a narrow photoluminescence (PL) spectrum and high quantum yield. However, Cd is classified as a hazardous materials and the use of Cd is being tightly regulated under 100ppm level in many countries.InP and CuInS2 (CIS) are being investigated as Cd-free QD materials and it is recently demonstrated that the performance of those Cd-free QDs is comparable to their Cd-based rivals.Due to a broad emission spectrum, CuInS2 QDs are also proper to be applied to white LED.4 For the lighting applications, the QD should be made in forms of color conversion films. Various film processes are reported with QDs in polymer matrixes. In this work, we synthesized the CuInS2 (CIS) QDs and QD embedded polystyrene color conversion films were fabricated for white color emission with electro-spinning process. As a result, blue light from blue LED is converted to white light with high color rendering index (CRI) of 72 by the color conversion films. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CuInS2%2FZnS" title="CuInS2/ZnS">CuInS2/ZnS</a>, <a href="https://publications.waset.org/abstracts/search?q=electro-spinning" title=" electro-spinning"> electro-spinning</a>, <a href="https://publications.waset.org/abstracts/search?q=color%20conversion%20films" title=" color conversion films"> color conversion films</a>, <a href="https://publications.waset.org/abstracts/search?q=white%20light%20emitting%20diodes" title=" white light emitting diodes"> white light emitting diodes</a> </p> <a href="https://publications.waset.org/abstracts/17273/color-conversion-films-with-cuins2zns-quantum-dots-embedded-polystyrene-nanofibers-by-electrospinning-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17273.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">813</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">1822</span> The Effect of the Thermal Temperature and Injected Current on Laser Diode 808 nm Output Power</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hassan%20H.%20Abuelhassan">Hassan H. Abuelhassan</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Ali%20Badawi"> M. Ali Badawi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelrahman%20A.%20Elbadawi"> Abdelrahman A. Elbadawi</a>, <a href="https://publications.waset.org/abstracts/search?q=Adam%20A.%20Elbashir"> Adam A. Elbashir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the effect of the injected current and temperature into the output power of the laser diode module operating at 808nm were applied, studied and discussed. Low power diode laser was employed as a source. The experimental results were demonstrated and then the output power of laser diode module operating at 808nm was clearly changed by the thermal temperature and injected current. The output power increases by the increasing the injected current and temperature. We also showed that the increasing of the injected current results rising in heat, which also, results into decreasing of the laser diode output power during the highest temperature as well. The best ranges of characteristics made by diode module operating at 808nm were carefully handled and determined. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=laser%20diode" title="laser diode">laser diode</a>, <a href="https://publications.waset.org/abstracts/search?q=light%20amplification" title=" light amplification"> light amplification</a>, <a href="https://publications.waset.org/abstracts/search?q=injected%20current" title=" injected current"> injected current</a>, <a href="https://publications.waset.org/abstracts/search?q=output%20power" title=" output power"> output power</a> </p> <a href="https://publications.waset.org/abstracts/49324/the-effect-of-the-thermal-temperature-and-injected-current-on-laser-diode-808-nm-output-power" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/49324.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">386</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">1821</span> Frequency Reconfigurable Multiband Patch Antenna Using PIN-Diode for ITS Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gaurav%20Upadhyay">Gaurav Upadhyay</a>, <a href="https://publications.waset.org/abstracts/search?q=Nand%20Kishore"> Nand Kishore</a>, <a href="https://publications.waset.org/abstracts/search?q=Prashant%20Ranjan"> Prashant Ranjan</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20S.%20Tripathi"> V. S. Tripathi</a>, <a href="https://publications.waset.org/abstracts/search?q=Shivesh%20Tripathi"> Shivesh Tripathi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A frequency reconfigurable multiband antenna for intelligent transportation system (ITS) applications is proposed in this paper. A PIN-diode is used for reconfigurability. Centre frequencies are 1.38, 1.98, 2.89, 3.86, and 4.34 GHz in “ON” state of Diode and 1.56, 2.16, 2.88, 3.91 and 4.45 GHz in “OFF” state. Achieved maximum bandwidth is 18%. The maximum gain of the proposed antenna is 2.7 dBi in “ON” state and 3.95 dBi in “OFF” state of the diode. The antenna is simulated, fabricated, and tested in the lab. Measured and simulated results are in good confirmation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ITS" title="ITS">ITS</a>, <a href="https://publications.waset.org/abstracts/search?q=multiband%20antenna" title=" multiband antenna"> multiband antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=PIN-diode" title=" PIN-diode"> PIN-diode</a>, <a href="https://publications.waset.org/abstracts/search?q=reconfigurable" title=" reconfigurable"> reconfigurable</a> </p> <a href="https://publications.waset.org/abstracts/84977/frequency-reconfigurable-multiband-patch-antenna-using-pin-diode-for-its-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/84977.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">347</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">1820</span> Development of Perovskite Quantum Dots Light Emitting Diode by Dual-Source Evaporation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antoine%20Dumont">Antoine Dumont</a>, <a href="https://publications.waset.org/abstracts/search?q=Weiji%20Hong"> Weiji Hong</a>, <a href="https://publications.waset.org/abstracts/search?q=Zheng-Hong%20Lu"> Zheng-Hong Lu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Light emitting diodes (LEDs) are steadily becoming the new standard for luminescent display devices because of their energy efficiency and relatively low cost, and the purity of the light they emit. Our research focuses on the optical properties of the lead halide perovskite CsPbBr₃ and its family that is showing steadily improving performances in LEDs and solar cells. The objective of this work is to investigate CsPbBr₃ as an emitting layer made by physical vapor deposition instead of the usual solution-processed perovskites, for use in LEDs. The deposition in vacuum eliminates any risk of contaminants as well as the necessity for the use of chemical ligands in the synthesis of quantum dots. Initial results show the versatility of the dual-source evaporation method, which allowed us to create different phases in bulk form by altering the mole ratio or deposition rate of CsBr and PbBr₂. The distinct phases Cs₄PbBr₆, CsPbBr₃ and CsPb₂Br₅ – confirmed through XPS (x-ray photoelectron spectroscopy) and X-ray diffraction analysis – have different optical properties and morphologies that can be used for specific applications in optoelectronics. We are particularly focused on the blue shift expected from quantum dots (QDs) and the stability of the perovskite in this form. We already obtained proof of the formation of QDs through our dual source evaporation method with electron microscope imaging and photoluminescence testing, which we understand is a first in the community. We also incorporated the QDs in an LED structure to test the electroluminescence and the effect on performance and have already observed a significant wavelength shift. The goal is to reach 480nm after shifting from the original 528nm bulk emission. The hole transport layer (HTL) material onto which the CsPbBr₃ is evaporated is a critical part of this study as the surface energy interaction dictates the behaviour of the QD growth. A thorough study to determine the optimal HTL is in progress. A strong blue shift for a typically green emitting material like CsPbBr₃ would eliminate the necessity of using blue emitting Cl-based perovskite compounds and could prove to be more stable in a QD structure. The final aim is to make a perovskite QD LED with strong blue luminescence, fabricated through a dual-source evaporation technique that could be scalable to industry level, making this device a viable and cost-effective alternative to current commercial LEDs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=material%20physics" title="material physics">material physics</a>, <a href="https://publications.waset.org/abstracts/search?q=perovskite" title=" perovskite"> perovskite</a>, <a href="https://publications.waset.org/abstracts/search?q=light%20emitting%20diode" title=" light emitting diode"> light emitting diode</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20dots" title=" quantum dots"> quantum dots</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20vacuum%20deposition" title=" high vacuum deposition"> high vacuum deposition</a>, <a href="https://publications.waset.org/abstracts/search?q=thin%20film%20processing" title=" thin film processing "> thin film processing </a> </p> <a href="https://publications.waset.org/abstracts/107127/development-of-perovskite-quantum-dots-light-emitting-diode-by-dual-source-evaporation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107127.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">161</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">1819</span> Polyethylenimine-Ethoxylated Dual Interfacial Layers for High-Efficient Quantum Dot Light-Emitting Diodes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Woosuk%20Lee">Woosuk Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We controlled the electron injection rate in inverted quantum dot light-emitting diode (QLED) by inserting PEIE layer between ZnO electron transport layer(ETL) and quantum dots(QDs) layer and successfully demonstrated high efficiency of QLEDs. The inverted QLED has the layer structure of ITO(cathode)/ ZnO NPs/PEIE/QDs/PEIE/P-TPD/MoO3/Al(anode). The PEIE between poly-TPD hole transport layer (HTL) and quantum dot emitting layer protects QD EML during HTL coating process and improves the surface morphology. In addition, the hole injection barrier is reduced by upshifting the valence band maximum (VBM) of QDs. An additional layer of PEIE was introduced between ZnO and QD to balance charge within QD emissive layer in device, which serves as an effective electron blocking layer without changing device operating condition such as turn-on voltage and emissive spectra. As a result, the optimized QLED with 5nm PEIE shows a ~36% improved current efficiency and external quantum efficiency (EQE) compared to the QLED without PEIE.(maximum current efficiency, and EQE are achieved 70cd/A and 17.3%, respectively). In particular, the maximum brightness of the optimized QLED dramatically improved by a factor of 2.3 relative to the QLED without PEIE. The main reasons for these QLED performance improvement are due to the suppressing the leakage current across the device and well confined exciton by inserting PEIE layers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=quantum%20dot%20light-emitting%20diodes" title="quantum dot light-emitting diodes">quantum dot light-emitting diodes</a>, <a href="https://publications.waset.org/abstracts/search?q=interfacial%20layer" title=" interfacial layer"> interfacial layer</a>, <a href="https://publications.waset.org/abstracts/search?q=charge-injection%20balance" title=" charge-injection balance"> charge-injection balance</a>, <a href="https://publications.waset.org/abstracts/search?q=suppressing%20QD%20charging" title=" suppressing QD charging"> suppressing QD charging</a> </p> <a href="https://publications.waset.org/abstracts/89085/polyethylenimine-ethoxylated-dual-interfacial-layers-for-high-efficient-quantum-dot-light-emitting-diodes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89085.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">183</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">1818</span> A Small Signal Model for Resonant Tunneling Diode</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rania%20M.%20Abdallah">Rania M. Abdallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20A.%20S.%20Dessouki"> Ahmed A. S. Dessouki</a>, <a href="https://publications.waset.org/abstracts/search?q=Moustafa%20H.%20Aly"> Moustafa H. Aly</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper has presented a new simple small signal model for a resonant tunnelling diode device. The resonant tunnelling diode equivalent circuit elements were calculated and the results led to good agreement between the calculated equivalent circuit elements and the measurement results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=resonant%20tunnelling%20diode" title="resonant tunnelling diode">resonant tunnelling diode</a>, <a href="https://publications.waset.org/abstracts/search?q=small%20signal%20model" title=" small signal model"> small signal model</a>, <a href="https://publications.waset.org/abstracts/search?q=negative%20differential%20conductance" title=" negative differential conductance"> negative differential conductance</a>, <a href="https://publications.waset.org/abstracts/search?q=electronic%20engineering" title=" electronic engineering"> electronic engineering</a> </p> <a href="https://publications.waset.org/abstracts/5891/a-small-signal-model-for-resonant-tunneling-diode" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5891.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">443</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">1817</span> Synthesis and Characterization of Some Novel Carbazole Schiff Bases (OLED)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Baki%20Cicek">Baki Cicek</a>, <a href="https://publications.waset.org/abstracts/search?q=Umit%20Calisir"> Umit Calisir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Carbazoles have been replaced lots of studies from 1960's to present and also still continues. In 1987, the first diode device had been developed. Thanks to that study, light emitting devices have been investigated and developed and also have been used on commercial applications. Nowadays, OLED (Organic Light Emitting Diodes) technology is using on lots of electronic screen such as (mobile phone, computer monitors, televisions, etc.) Carbazoles were subject a lot of study as a semiconductor material. Although this technology is used commen and widely, it is still development stage. Metal complexes of these compounds are using at pigment dyes because of colored substances, polymer technology, medicine industry, agriculture area, preparing rocket fuel-oil, determine some of biological events, etc. Becides all of these to preparing of schiff base synthesis is going on intensely. In this study, some of novel carbazole schiff bases were synthesized starting from carbazole. For that purpose, firstly, carbazole was alkylated. After purification of N-substituted-carbazole was nitrated to sythesized 3-nitro-N-substituted and 3,6-dinitro-N-substituted carbazoles. At next step, nitro group/groups were reduced to amines. Purified with using a type of silica gel-column chromatography. At the last step of our study, with sythesized 3,6-diamino-N-substituted carbazoles and 3-amino-N-substituted carbazoles were reacted with aldehydes to condensation reactions. 3-(imino-p-hydroxybenzyl)-N-isobutyl -carbazole, 3-(imino-2,3,4-trimethoxybenzene)-N-butylcarbazole, 3-(imino-3,4-dihydroxybenzene)-N-octylcarbazole, 3-(imino-2,3-dihydroxybenzene)-N-octylkarbazole and 3,6-di(α-imino-β-naphthol) -N-hexylcarbazole compounds were synthesized. All of synthesized compounds were characterized with FT-IR, 1H-NMR, 13C-NMR, and LC-MS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbazole" title="carbazole">carbazole</a>, <a href="https://publications.waset.org/abstracts/search?q=carbazol%20schiff%20base" title=" carbazol schiff base"> carbazol schiff base</a>, <a href="https://publications.waset.org/abstracts/search?q=condensation%20reactions" title=" condensation reactions"> condensation reactions</a>, <a href="https://publications.waset.org/abstracts/search?q=OLED" title=" OLED"> OLED</a> </p> <a href="https://publications.waset.org/abstracts/23146/synthesis-and-characterization-of-some-novel-carbazole-schiff-bases-oled" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23146.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">441</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">1816</span> Dependence of Photocurrent on UV Wavelength in ZnO/Pt Bottom-Contact Schottky Diode</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Byoungho%20Lee">Byoungho Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Changmin%20Kim"> Changmin Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Youngmin%20Lee"> Youngmin Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Sejoon%20Lee"> Sejoon Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Deuk%20Young%20Kim"> Deuk Young Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We fabricated the bottom-contacted ZnO/Pt Schottky diode and investigated the dependence of its photocurrent on the wavelength of illuminated ultraviolet (UV) light source. The bottom-contacted Schottky diode was devised by growing (000l) ZnO on (111) Pt, and the fabricated device showed a strong dependence on the UV wavelength for its photo-response characteristics. When longer-wavelength-UV (e.g., UV-A) was illuminated on the device, the photo-current was increased by a factor of 200, compared to that under illumination of shorter-wavelength-UV (e.g., UV-C). The behavior is attributed to the wavelength-dependent UV penetration depth for ZnO. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ZnO" title="ZnO">ZnO</a>, <a href="https://publications.waset.org/abstracts/search?q=UV" title=" UV"> UV</a>, <a href="https://publications.waset.org/abstracts/search?q=Schottky%20diode" title=" Schottky diode"> Schottky diode</a>, <a href="https://publications.waset.org/abstracts/search?q=photocurrent" title=" photocurrent"> photocurrent</a> </p> <a href="https://publications.waset.org/abstracts/45500/dependence-of-photocurrent-on-uv-wavelength-in-znopt-bottom-contact-schottky-diode" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45500.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">256</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">1815</span> Analysis of a Power Factor Correction Converter for Light Emitting Diode Driver Application </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Edwina%20G.%20Rodrigues">Edwina G. Rodrigues</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20J.%20Bindhu"> S. J. Bindhu</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20V.%20Rajesh"> A. V. Rajesh </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper proposes a switched capacitor based driver circuit for high power light emitting diodes with a front end rectifier. LEDs are low-voltage light sources, requiring a constant DC voltage or current to operate optimally. LEDs, therefore, require a device that can convert incoming AC power to the proper DC voltage, and regulate the current flowing through the LED during operation. Proposed topology has a front end converter. It is an AC-DC rectifier that works on bridgeless boost topology which shapes the input current waveform. The front end converter is followed by a DC-DC converter which provides a constant DC voltage across the LEDs. A 12V AC input is given to the input of frontend converter which rectifies and boost the voltage to 24v DC and gives it to the DC-DC converter. The DC-DC converter converts the 24V DC and regulates this constant DC voltage across the LEDs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bridgeless%20rectifier" title="bridgeless rectifier">bridgeless rectifier</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20factor%20correction%28PFC%29" title=" power factor correction(PFC)"> power factor correction(PFC)</a>, <a href="https://publications.waset.org/abstracts/search?q=SC%20converter" title=" SC converter"> SC converter</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20harmonic%20distortion%20%28THD%29" title=" total harmonic distortion (THD)"> total harmonic distortion (THD)</a> </p> <a href="https://publications.waset.org/abstracts/53400/analysis-of-a-power-factor-correction-converter-for-light-emitting-diode-driver-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53400.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">873</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">1814</span> A Study on Evaluation for Performance Verification of Ni-63 Radioisotope Betavoltaic Battery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Youngmok%20Yun">Youngmok Yun</a>, <a href="https://publications.waset.org/abstracts/search?q=Bosung%20Kim"> Bosung Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Sungho%20Lee"> Sungho Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Kyeongsu%20Jeon"> Kyeongsu Jeon</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyunwook%20Hwangbo"> Hyunwook Hwangbo</a>, <a href="https://publications.waset.org/abstracts/search?q=Byounggun%20Choi"> Byounggun Choi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A betavoltaic battery converts nuclear energy released as beta particles (β-) directly into electrical energy. Betavoltaic cells are analogous to photovoltaic cells. The beta particle’s kinetic energy enters a p-n junction and creates electron-hole pairs. Subsequently, the built-in potential of the p-n junction accelerates the electrons and ions to their respective collectors. The major challenges are electrical conversion efficiencies and exact evaluation. In this study, the performance of betavoltaic battery was evaluated. The betavoltaic cell was evaluated in the same condition as radiation from radioactive isotope using by FE-SEM(field emission scanning electron microscope). The average energy of the radiation emitted from the Ni-63 radioisotope is 17.42 keV. FE-SEM is capable of emitting an electron beam of 1-30keV. Therefore, it is possible to evaluate betavoltaic cell without radioactive isotopes. The betavoltaic battery consists of radioisotope that is physically connected on the surface of Si-based PN diode. The performance of betavoltaic battery can be estimated by the efficiency of PN diode unit cell. The current generated by scanning electron microscope with fixed accelerating voltage (17keV) was measured by using faraday cup. Electrical characterization of the p-n junction diode was performed by using Nano Probe Work Station and I-V measurement system. The output value of the betavoltaic cells developed by this research team was 0.162 μw/cm2 and the efficiency was 1.14%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=betavoltaic" title="betavoltaic">betavoltaic</a>, <a href="https://publications.waset.org/abstracts/search?q=nuclear" title=" nuclear"> nuclear</a>, <a href="https://publications.waset.org/abstracts/search?q=battery" title=" battery"> battery</a>, <a href="https://publications.waset.org/abstracts/search?q=Ni-63" title=" Ni-63"> Ni-63</a>, <a href="https://publications.waset.org/abstracts/search?q=radio-isotope" title=" radio-isotope"> radio-isotope</a> </p> <a href="https://publications.waset.org/abstracts/50012/a-study-on-evaluation-for-performance-verification-of-ni-63-radioisotope-betavoltaic-battery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50012.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">257</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">1813</span> Effects of Incident Angle and Distance on Visible Light Communication</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taegyoo%20Woo">Taegyoo Woo</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong%20Kang%20Park"> Jong Kang Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong%20Tae%20Kim"> Jong Tae Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Visible Light Communication (VLC) provides wireless communication features in illumination systems. One of the key applications is to recognize the user location by indoor illuminators such as light emitting diodes. For localization of individual receivers in these systems, we usually assume that receivers and transmitters are placed in parallel. However, it is difficult to satisfy this assumption because the receivers move randomly in real case. It is necessary to analyze the case when transmitter is not placed perfectly parallel to receiver. It is also important to identify changes on optical gain by the tilted angles and distances of them against the illuminators. In this paper, we simulate optical gain for various cases where the tilt of the receiver and the distance change. Then, we identified changing patterns of optical gains according to tilted angles of a receiver and distance. These results can help many VLC applications understand the extent of the location errors with regard to optical gains of the receivers and identify the root cause. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=visible%20light%20communication" title="visible light communication">visible light communication</a>, <a href="https://publications.waset.org/abstracts/search?q=incident%20angle" title=" incident angle"> incident angle</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20gain" title=" optical gain"> optical gain</a>, <a href="https://publications.waset.org/abstracts/search?q=light%20emitting%20diode" title=" light emitting diode"> light emitting diode</a> </p> <a href="https://publications.waset.org/abstracts/60436/effects-of-incident-angle-and-distance-on-visible-light-communication" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60436.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">335</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">1812</span> Study on Concentration and Temperature Measurement with 760 nm Diode Laser in Combustion System Using Tunable Diode Laser Absorption Spectroscopy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Miyeon%20Yoo">Miyeon Yoo</a>, <a href="https://publications.waset.org/abstracts/search?q=Sewon%20Kim"> Sewon Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Changyeop%20Lee"> Changyeop Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is important to measure the internal temperature or temperature distribution precisely in combustion system to increase energy efficiency and reduce the pollutants. Especially in case of large combustion systems such as power plant boiler and reheating furnace of steel making process, it is very difficult to measure those physical properties in detail. Tunable diode laser absorption spectroscopy measurement and analysis can be attractive method to overcome the difficulty. In this paper, TDLAS methods are used to measure the oxygen concentration and temperature distribution in various experimental conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tunable%20diode%20laser%20absorption%20Spectroscopy" title="tunable diode laser absorption Spectroscopy">tunable diode laser absorption Spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature%20distribution" title=" temperature distribution"> temperature distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20concentration" title=" gas concentration"> gas concentration</a> </p> <a href="https://publications.waset.org/abstracts/3424/study-on-concentration-and-temperature-measurement-with-760-nm-diode-laser-in-combustion-system-using-tunable-diode-laser-absorption-spectroscopy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3424.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">386</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">1811</span> Synthesis of Highly Stable Near-Infrared FAPbI₃ Perovskite Doped with 5-AVA and Its Applications in NIR Light-Emitting Diodes for Bioimaging</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nasrud%20Din">Nasrud Din</a>, <a href="https://publications.waset.org/abstracts/search?q=Fawad%20Saeed"> Fawad Saeed</a>, <a href="https://publications.waset.org/abstracts/search?q=Sajid%20Hussain"> Sajid Hussain</a>, <a href="https://publications.waset.org/abstracts/search?q=Rai%20Muhammad%20Dawood%20Sultan"> Rai Muhammad Dawood Sultan</a>, <a href="https://publications.waset.org/abstracts/search?q=Premkumar%20Sellan"> Premkumar Sellan</a>, <a href="https://publications.waset.org/abstracts/search?q=Qasim%20Khan"> Qasim Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Lei"> Wei Lei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The continuously increasing external quantum efficiencies of Perovskite light-emitting diodes (LEDs) have received significant interest in the scientific community. The need for monitoring and medical diagnostics has experienced a steady growth in recent years, primarily caused by older people and an increasing number of heart attacks, tumors, and cancer disorders among patients. The application of Perovskite near-infrared light-emitting diode (PeNIRLEDs) has exhibited considerable efficacy in bioimaging, particularly in the visualization and examination of blood arteries, blood clots, and tumors. PeNIRLEDs exhibit exciting potential in the field of blood vessel imaging because of their advantageous attributes, including improved depth penetration and less scattering in comparison to visible light. In this study, we synthesized FAPbI₃ Perovskite doped with different concentrations of 5-Aminovaleric acid (5-AVA) 1-6 mg. The incorporation of 5-AVA as a dopant during the FAPbI₃ Perovskite formation influences the FAPbI3 Perovskite’s structural and optical properties, improving its stability, photoluminescence efficiency, and charge transport characteristics. We found a resulting PL emission peak wavelength of 850 nm and bandwidth of 44 nm, along with a calculated quantum yield of 75%. The incorporation of 5-AVA-modified FAPbI₃ Perovskite into LEDs will show promising results, enhancing device efficiency, color purity, and stability. Making it suitable for various medical applications, including subcutaneous deep vein imaging, blood flow visualization, and tumor illumination. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=perovskite%20light-emitting%20diodes" title="perovskite light-emitting diodes">perovskite light-emitting diodes</a>, <a href="https://publications.waset.org/abstracts/search?q=deep%20vein%20imaging" title=" deep vein imaging"> deep vein imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=blood%20flow%20visualization" title=" blood flow visualization"> blood flow visualization</a>, <a href="https://publications.waset.org/abstracts/search?q=tumor%20illumination" title=" tumor illumination"> tumor illumination</a> </p> <a href="https://publications.waset.org/abstracts/186722/synthesis-of-highly-stable-near-infrared-fapbi3-perovskite-doped-with-5-ava-and-its-applications-in-nir-light-emitting-diodes-for-bioimaging" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186722.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">56</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">1810</span> All Solution-Processed Organic Light Emitting Diode with Low Melting Point Alloy Encapsulation </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Geon%20Bae">Geon Bae</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheol%20Hee%20Moon"> Cheol Hee Moon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Organic Light Emitting Diodes (OLEDs) are being developed rapidly as next-generation displays due to their self-luminous and flexible characteristics. OLEDs are highly susceptible to moisture and oxygen due to their structural properties. Thus, requiring a high level of encapsulation technology. Recently, encapsulation technology such as Thin Film Encapsulation (TFE) has been developed for OLED, but it is not perfect to prevent moisture permeation on the side. In this study, we propose OLED encapsulation method using Low melting Point Alloy (LMPA). The LMPA line was designed in square box shape on the outer edge of the device and was formed by screen printing method. To determine if LMPA has an effect on OLED, we fabricated solution processed OLEDs with a square-shaped LMPA line and evaluate the I-V-L characteristics of the OLEDs. Also, the resistance characteristic of the LMPA line was observed by repeatedly bending the LMPA line. It is expected that LMPA encapsulation will have a great advantage in shortening the process time and cost reduction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=OLED" title="OLED">OLED</a>, <a href="https://publications.waset.org/abstracts/search?q=encapsulation" title=" encapsulation"> encapsulation</a>, <a href="https://publications.waset.org/abstracts/search?q=LMPA" title=" LMPA"> LMPA</a>, <a href="https://publications.waset.org/abstracts/search?q=solution%20process" title=" solution process"> solution process</a> </p> <a href="https://publications.waset.org/abstracts/92197/all-solution-processed-organic-light-emitting-diode-with-low-melting-point-alloy-encapsulation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92197.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">246</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">1809</span> Fluctuations of Transfer Factor of the Mixer Based on Schottky Diode</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alexey%20V.%20Klyuev">Alexey V. Klyuev</a>, <a href="https://publications.waset.org/abstracts/search?q=Arkady%20V.%20Yakimov"> Arkady V. Yakimov</a>, <a href="https://publications.waset.org/abstracts/search?q=Mikhail%20I.%20Ryzhkin"> Mikhail I. Ryzhkin</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrey%20V.%20Klyuev"> Andrey V. Klyuev</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fluctuations of Schottky diode parameters in a structure of the mixer are investigated. These fluctuations are manifested in two ways. At the first, they lead to fluctuations in the transfer factor that is lead to the amplitude fluctuations in the signal of intermediate frequency. On the basis of the measurement data of 1/f noise of the diode at forward current, the estimation of a spectrum of relative fluctuations in transfer factor of the mixer is executed. Current dependence of the spectrum of relative fluctuations in transfer factor of the mixer and dependence of the spectrum of relative fluctuations in transfer factor of the mixer on the amplitude of the heterodyne signal are investigated. At the second, fluctuations in parameters of the diode lead to the occurrence of 1/f noise in the output signal of the mixer. This noise limits the sensitivity of the mixer to the value of received signal. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=current-voltage%20characteristic" title="current-voltage characteristic">current-voltage characteristic</a>, <a href="https://publications.waset.org/abstracts/search?q=fluctuations" title=" fluctuations"> fluctuations</a>, <a href="https://publications.waset.org/abstracts/search?q=mixer" title=" mixer"> mixer</a>, <a href="https://publications.waset.org/abstracts/search?q=Schottky%20diode" title=" Schottky diode"> Schottky diode</a>, <a href="https://publications.waset.org/abstracts/search?q=1%2Ff%20noise" title=" 1/f noise"> 1/f noise</a> </p> <a href="https://publications.waset.org/abstracts/37525/fluctuations-of-transfer-factor-of-the-mixer-based-on-schottky-diode" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37525.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">586</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">1808</span> Powerful Laser Diode Matrixes for Active Vision Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dzmitry%20M.%20Kabanau">Dzmitry M. Kabanau</a>, <a href="https://publications.waset.org/abstracts/search?q=Vladimir%20V.%20Kabanov"> Vladimir V. Kabanov</a>, <a href="https://publications.waset.org/abstracts/search?q=Yahor%20V.%20Lebiadok"> Yahor V. Lebiadok</a>, <a href="https://publications.waset.org/abstracts/search?q=Denis%20V.%20Shabrov"> Denis V. Shabrov</a>, <a href="https://publications.waset.org/abstracts/search?q=Pavel%20V.%20Shpak"> Pavel V. Shpak</a>, <a href="https://publications.waset.org/abstracts/search?q=Gevork%20T.%20Mikaelyan"> Gevork T. Mikaelyan</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexandr%20P.%20Bunichev"> Alexandr P. Bunichev</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article is deal with the experimental investigations of the laser diode matrixes (LDM) based on the AlGaAs/GaAs heterostructures (lasing wavelength 790-880 nm) to find optimal LDM parameters for active vision systems. In particular, the dependence of LDM radiation pulse power on the pulse duration and LDA active layer heating as well as the LDM radiation divergence are discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=active%20vision%20systems" title="active vision systems">active vision systems</a>, <a href="https://publications.waset.org/abstracts/search?q=laser%20diode%20matrixes" title=" laser diode matrixes"> laser diode matrixes</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20properties" title=" thermal properties"> thermal properties</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20divergence" title=" radiation divergence"> radiation divergence</a> </p> <a href="https://publications.waset.org/abstracts/19451/powerful-laser-diode-matrixes-for-active-vision-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19451.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">610</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">1807</span> Characterization of InP Semiconductor Quantum Dot Laser Diode after Am-Be Neutron Irradiation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdulmalek%20Marwan%20Rajkhan">Abdulmalek Marwan Rajkhan</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20S.%20Al%20Ghamdi"> M. S. Al Ghamdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20Damoum"> Mohammed Damoum</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20Banoqitah"> Essam Banoqitah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper is about the Am-Be neutron source irradiation of the InP Quantum Dot Laser diode. A QD LD was irradiated for 24 hours and 48 hours. The laser underwent IV characterization experiments before and after the first and second irradiations. A computer simulation using GAMOS helped in analyzing the given results from IV curves. The results showed an improvement in the QD LD series resistance, current density, and overall ideality factor at all measured temperatures. This is explained by the activation of the QD LD Indium composition to Strontium, ionization of the compound QD LD materials, and the energy deposited to the QD LD. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=quantum%20dot%20laser%20diode%20irradiation" title="quantum dot laser diode irradiation">quantum dot laser diode irradiation</a>, <a href="https://publications.waset.org/abstracts/search?q=effect%20of%20radiation%20on%20QD%20LD" title=" effect of radiation on QD LD"> effect of radiation on QD LD</a>, <a href="https://publications.waset.org/abstracts/search?q=Am-Be%20irradiation%20effect%20on%20SC%20QD%20LD" title=" Am-Be irradiation effect on SC QD LD"> Am-Be irradiation effect on SC QD LD</a> </p> <a href="https://publications.waset.org/abstracts/178642/characterization-of-inp-semiconductor-quantum-dot-laser-diode-after-am-be-neutron-irradiation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/178642.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">61</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">1806</span> Studying the Bond Strength of Geo-Polymer Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rama%20Seshu%20Doguparti">Rama Seshu Doguparti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the experimental investigation on the bond behavior of geo polymer concrete. The bond behavior of geo polymer concrete cubes of grade M35 reinforced with 16 mm TMT rod is analyzed. The results indicate that the bond performance of reinforced geo polymer concrete is good and thus proves its application for construction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=geo-polymer" title="geo-polymer">geo-polymer</a>, <a href="https://publications.waset.org/abstracts/search?q=concrete" title=" concrete"> concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=bond%20strength" title=" bond strength"> bond strength</a>, <a href="https://publications.waset.org/abstracts/search?q=behaviour" title=" behaviour"> behaviour</a> </p> <a href="https://publications.waset.org/abstracts/19114/studying-the-bond-strength-of-geo-polymer-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19114.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">508</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">1805</span> Nano-Particle of π-Conjugated Polymer for Near-Infrared Bio-Imaging</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hiroyuki%20Aoki">Hiroyuki Aoki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Molecular imaging has attracted much attention recently, which visualizes biological molecules, cells, tissue, and so on. Among various in vivo imaging techniques, the fluorescence imaging method has been widely employed as a useful modality for small animals in pre-clinical researches. However, the higher signal intensity is needed for highly sensitive in vivo imaging. The objective of the current study is the development of a fluorescent imaging agent with high brightness for the tumor imaging of a mouse. The strategy to enhance the fluorescence signal of a bio-imaging agent is the increase of the absorption of the excitation light and the fluorescence conversion efficiency. We developed a nano-particle fluorescence imaging agent consisting of a π-conjugated polymer emitting a fluorescence signal in a near infrared region. A large absorption coefficient and high emission intensity at a near infrared optical window for biological tissue enabled highly sensitive in vivo imaging with a tumor-targeting ability by an EPR (enhanced permeation and retention) effect. The signal intensity from the π-conjugated fluorescence imaging agent is larger by two orders of magnitude compared to a quantum dot, which has been known as the brightest imaging agent. The π-conjugated polymer nano-particle would be a promising candidate in the in vivo imaging of small animals. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fluorescence" title="fluorescence">fluorescence</a>, <a href="https://publications.waset.org/abstracts/search?q=conjugated%20polymer" title=" conjugated polymer"> conjugated polymer</a>, <a href="https://publications.waset.org/abstracts/search?q=in%20vivo%20imaging" title=" in vivo imaging"> in vivo imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-particle" title=" nano-particle"> nano-particle</a>, <a href="https://publications.waset.org/abstracts/search?q=near-infrared" title=" near-infrared"> near-infrared</a> </p> <a href="https://publications.waset.org/abstracts/97998/nano-particle-of-p-conjugated-polymer-for-near-infrared-bio-imaging" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/97998.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">478</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">1804</span> The LMPA/Epoxy Mixture Encapsulation of OLED on Polyimide Substrate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chuyi%20Ye">Chuyi Ye</a>, <a href="https://publications.waset.org/abstracts/search?q=Minsang%20Kim"> Minsang Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheol-Hee%20Moon"> Cheol-Hee Moon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The organic light emitting diode(OLED), is a potential organic optical functional materials which is considered as the next generation display technology with the advantages such as all-solid state, ultra-thin thickness, active luminous and flexibility. Due to the development of polymer-inorganic substrate, it becomes possible to achieve the flexible OLED display. However the organic light-emitting material is very sensitive to the oxygen and water vapor, and the encapsulation requires water vapor transmission rate(WVTR) and oxygen transmission rate(OTR) as lower as 10-6 g/(m2.d) and 10-5 cm3/(m2.d) respectively. In current situation, the rigorous WVTR and OTR have restricted the application of the OLED display. Traditional epoxy/getter or glass frit approaches, which have been widely applied on glass-substrate-based devices, are not suitable for transparent flexible organic devices, and mechanically flexible thin-film approaches are required. To ensure the OLED’s lifetime, the encapsulation material of the OLED package is very important. In this paper, a low melting point alloy(LMPA)-epoxy mixture in the encapsulation process is introduced. There will be a phase separation when the mixture is heated to the melting of LMPA and the formation of the double line structure between two substrates: the alloy barrier has extremely low WVTR and OTR and the epoxy fills the potential tiny cracks. In our experiment, the PI film is chosen as a flexible transparent substrate, and Mo and Cu are deposited on the PI film successively. Then the two metal layers are photolithographied to the sealing pattern line. The Mo is a transition layer between the PI film and Cu, at the same time, the Cu has a good wettability with the LMPA(Sn-58Bi). At last, pattern is printed with LMPA layer and applied voltage, the gathering Joule heat melt the LMPA and form the double line structure and the OLED package is sealed in the same time. In this research, the double-line encapsulating structure of LMPA and epoxy on the PI film is manufactured for the flexible OLED encapsulation, and in this process it is investigated whether the encapsulation satisfies the requirement of WVTR and OTR for the flexible OLED. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=encapsulation" title="encapsulation">encapsulation</a>, <a href="https://publications.waset.org/abstracts/search?q=flexible" title=" flexible"> flexible</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20melting%20point%20alloy" title=" low melting point alloy"> low melting point alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=OLED" title=" OLED"> OLED</a> </p> <a href="https://publications.waset.org/abstracts/35161/the-lmpaepoxy-mixture-encapsulation-of-oled-on-polyimide-substrate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35161.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">598</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">1803</span> Acid Fuchsin Dye Based PMMA Film for Holographic Investigations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20Vinitha">G. Vinitha</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Ramalingam"> A. Ramalingam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In view of a possible application in optical data storage devices, diffraction grating efficiency of an organic dye, Acid Fuchsin doped in PMMA matrix was studied under excitation with CW diode pumped Nd: YAG laser at 532 nm. The open aperture Z-scan of dye doped polymer displayed saturable absorption and the closed aperture Z-scan of the samples exhibited negative nonlinearity. The diffraction efficiency of the grating is the ratio of the intensity of the first order diffracted power to the incident read beam power. The dye doped polymer films were found to be good media for recording. It is observed that the formation of gratings strongly depend on the concentration of dye in the polymer film, the intensity ratios of the writing beams and the angle between the writing beams. It has been found that efficient writing can be made at an angle of 20° and when the intensity ratio of the writing beams is unity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diffraction%20efficiency" title="diffraction efficiency">diffraction efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20optical%20material" title=" nonlinear optical material"> nonlinear optical material</a>, <a href="https://publications.waset.org/abstracts/search?q=saturable%20absorption" title=" saturable absorption"> saturable absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=surface-relief-gratings" title=" surface-relief-gratings"> surface-relief-gratings</a> </p> <a href="https://publications.waset.org/abstracts/14412/acid-fuchsin-dye-based-pmma-film-for-holographic-investigations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14412.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">299</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=polymer%20lignt%20emitting%20diode&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=polymer%20lignt%20emitting%20diode&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=polymer%20lignt%20emitting%20diode&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=polymer%20lignt%20emitting%20diode&page=5">5</a></li> <li class="page-item"><a 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