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386 articles for “Reflectance”
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Design Simulation and Analysis of Improved Anti Reflecting Coating for Reflection Loss Minimization of Solar Cell
Abstract: Antireflection coatings are made up of a thin layer of dielectric material with a specific thickness and refractive index that causes the wave reflected from the top surface of the antireflection coating to be out of phase with the wave reflected from the semiconductor surface due to interference effects in the coating. Anti-reflective coating design and modelling were utilised to improve the efficiency of solar cells. When integrated into arrays …
Published in Journal of Thermal Engineering and Applications · Vol. 8, Issue 3, 2021 · pp. 32–41 Read article
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25 Gbps Downstream, 3 Gbps Upstream, 20 Km Reach PON Using Duobinary Modulation Based on Reflective-ONU Utilizing R-SOA for Remodulation
Abstract: AbstractThe paper demonstrates 3 Gbps upstream transmission, 25 Gbps of downstream transmission of a single channel PON over 20 Km utilizing the wavelength reuse scheme using R-SOA in the ONU. NRZ and duobinary modulation scheme is considered and compared and the duobinary modulation scheme is selected for its better performance.Keywords: Reflective semiconductor optical amplifier, Passive Optical Network (PON), duobinary modulation, fiber to the x (FTTx)
Published in Trends in Opto-electro & Optical Communication · Vol. 4, Issue 3, 2014 · pp. 1–7 Read article
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Polymer and Polymer-Metallic Reflective Materials for Solar Thermal Applications: A review
Abstract: Reflective materials play a critical role in determining the optical and thermal performance of solar thermal systems by controlling the concentration and utilization of incident solar radiation. This review examines the application and performance of polymer-based and polymer-metallic reflective materials for solar thermal applications, with particular emphasis on their suitability for solar cookers and concentrating solar technologies. Four commonly used reflector materials—aluminum foil, anodized aluminum, Mylar (metallized polyester film), and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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Review and Analyze Low Cross Polarized Feed for Offset Parabolic Reflector Antenna for S-Band Application
Abstract: This study discusses the design of low cross polarized feed for offset parabolic reflector antenna and its application. Conical corrugated horn antenna consists of an input mode TE11 and the corrugation part requires a transition to HE11 mode for propagation. The paper presents the widely used design of TE11-HE11 mode converter i.e. Variable slot mode converter. Three different design of corrugated horn antenna is presented for optimizing the value of …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 3, 2018 · pp. 30–36 Read article
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Optimization of reflectance based on SAG Structure using Plane Wave Expansion
Abstract: For future filter applications, we examine the silicon-based ternary grating SAG (silicon on air on glass) structure. Grating is accomplished by a one-dimensional grating structure composed of ternary periodic structure, where ternary period is realized by combining silicon-air-silicon dioxide layers. The plane wave expansion method (PWE) is utilized to mimic the reflections from such periodic structures. The simulation outcome divulges that the number of layers in the periodic structures have …
Published in Journal of Microcontroller Engineering and Applications · Vol. 9, Issue 1, 2022 · pp. 40–45 Read article
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Reflectance analysis for SOI application using semiconductor materials
Abstract: This work comprehensively investigates the high reflectance of semiconductor-glass (InP-FS, GaAs-BSG, Ge-BK7, Ge-BSG,GaAs-FS) grating SOI structure at wavelength 1.55m. The simulation results indicated that the reflectivities for InP-FS, Ge-BSG, Ge-BK7, GaAs-FS, and GaAs-BSG grating SOI structures are 99.01 percent, 99.03 percent, 99.20 percent, and 99.29 percent, 99.47 percent at wavelength 1.55m, respectively. The plane wave expansion approach is used in this simulation. When compared to the old outcome, the current …
Published in Journal of Semiconductor Devices and Circuits · Vol. 9, Issue 1, 2022 · pp. 34–38 Read article
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Thin Film Coatings for Anti-Reflective and Anti-Fogging Applications in Optical Devices
Abstract: To maximize optical device lifetime and performance, thin film coatings are crucial. Coatings with anti-reflective (AR) and anti-fogging (AF) properties are important uses that improve optical systems' usability and performance. This review covers materials, deposition methods, and performance measures, providing a thorough analysis of recent developments in AR and AF thin film technologies. The study examines several techniques, such as chemical vapor deposition (CVD), sputtering, and sol-gel procedures, for producing …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 11, Issue 2, 2024 · pp. 26–30 Read article
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Total-internal-reflection-based optical rotation quasi-phase-matching for efficient second-harmonic generation in Cadmium Germanium Arsenide crystal
Abstract: This study investigates a total-internal-reflection (TIR)-based optical rotation quasi-phase-matching (ORQPM) approach for second harmonic generation within a cadmium germanium arsenide crystal slab. The crystal is coated with a thin film of yttrium oxide to facilitate precise control over phase shifts between p- and s-polarized light upon reflection at the slab-film interface. By leveraging the interplay between TIR- induced optical rotation and fractional QPM effects at designated bounce points, the configuration …
Published in International Journal of Crystalline Materials · Vol. 3, Issue 1, 2026 · pp. 01–09 Read article
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High Reflectivity Semiconductor-glass Grating Structure for SOI Application
Abstract: AbstractHigh reflectance of semiconductor-glass (GaAs-BSG, InP-FS, GaAs-FS, Ge-BK7, Ge-BSG) grating SOI structure at wavelength 1.55 µm is thoroughly investigated in this paper. Simulation result showed that, reflectivities are 99.01, 99.03, 99.20, 99.29 and 99.47% at wavelength 1.55 µm for GaAs-BSG, InP-FS, GaAs-FS, Ge-BK7, Ge-BSG grating SOI structure, respectively. This simulation is carried out using plane wave expansion method. Present simulation gives effective result as compared to existing result.Keywords: semiconductor-glass grating, …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 3, 2013 · pp. 9–12 Read article
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Addressing Rural Issues in Urban Planning: Emerging Trends and Reflective Perspectives
Abstract: Urban planning, a crucial component in shaping the future of communities, has traditionally been entered on urban spaces, often neglecting the unique challenges faced by rural areas. This paper delves into the critical intersection of rural issues within urban planning, analysing current trends and providing reflective perspectives on integrating rural considerations. By examining emerging trends such as rural-urban linkages, sustainable agriculture, rural infrastructure development, and technology adoption, this paper explores …
Published in International Journal of Rural and Regional Development · Vol. 1, Issue 2, 2023 · pp. 43–48 Read article
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Performance Optimization of Reflectors Integrated Flat Plate Solar Collector for Water Heating
Abstract: As the demand for energy is increasing day by day, so to compensate that they use renewableenergy is the best choice in these days. Solar energy is one of the best renewable energyresources. A flat solar collector is using to heat water for domestic as well as commerciallevels. In this research, optimization of the thermal efficiency of a flat solar collector is done,reflector angle, day time and flow rate are …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 11, Issue 3, 2020 · pp. 24–32 Read article
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Advancements in Smart Home Technology: Evoview’s Impact and Reflection
Abstract: The “EvoView” project is a sophisticated blend of design and technology, featuring RaspberryPi 4, a sleek display panel, a meticulously crafted wooden frame, and a one-way glass mirror. This innovative mirror transforms into an information hub, displaying real-time weather updates, current time, news, and upcoming events seamlessly. A strategic decision was made when the Raspberry Pi 3 Plus 4 was selected as the project's central processing unit. This option allows …
Published in Journal of Instrumentation Technology & Innovations · Vol. 14, Issue 1, 2024 · pp. 16–21 Read article
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Application of Wavelet De-noising for Wind Speed Retrieval from a 2.5 MHz Partial Reflection Radar
Abstract: Atmospheric studies related to middle-atmospheric coupling, climate monitoring, steering profiles for expendable launch vehicles and re-entry missions require atmospheric wind profiles as an important input. Atmospheric wind profiling is conventionally carried out using rawinsondes and radiosondes flown in high altitude balloons, complemented by sounding rockets and ground-based radars. The partial reflection radar (PRR) can be effectively used for the same purpose to an altitude of about 100 km. But deriving …
Published in Current Trends in Signal Processing · Vol. 3, Issue 2, 2013 · pp. 1–8 Read article
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A Novel Technique for Improvement in Front-to-Back Ratio of MSA for WLAN/WiMAX using Corrugated Dielectric Substrate as a Reflector
Abstract: In this paper the design of a microstrip antenna (MSA) with corrugated dielectric reflector is proposed to improve the front-to-back ratio (FBR) and reduce the back lobes in radiation pattern of the antenna. The designed antenna operates at 5.8 GHz and simulated on CSTMWS’10 software. Simulation results show that proposed antenna has 21.8 dB higher FBR than that of conventional MSA.
Published in Journal of Electronic Design Technology · Vol. 6, Issue 1, 2015 · pp. 25–29 Read article
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Psychological Trauma Reflected in B.Rangarao’s Dalit Short Story Death of a Rich Man
Abstract: In the growing expansion of marginalized literature, B.Rangarao’s short story collection “Desperate Men and Women: Ten Dalit Short Stories from India” has been greatly applauded by the readers as it brilliantly exposed the trauma of both men and women of Dalit community in autocratic conditions in India. In Dalit writing Rangrao’s contribution gave fresh look especially to the short story genre as it is based on the revolutionary ideas of …
Published in Emerging Trends in Languages · Vol. 1, Issue 1, 2024 · pp. 01–07 Read article
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Historical Reflection on the Imperative of Security Sector Reform (SSR) in A Democratic Society
Abstract: The end of Cold War heralded “Hot Peace” into the international system. Before then, people thought that the conclusion of the Cold War would bring about a lasting peace on a global scale. However, this noble aspiration was not 1a be s- September-il, amply and—brutally demonstrated besides, the increasing wave of terrorism. Global democratization efforts brought about the end of the Cold War. People all across the world took advantage …
Published in International Journal of Trends in Humanities · Vol. 1, Issue 2, 2024 · pp. 09–18 Read article
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Magic Mirror - Smart Reflective Interface for a Smart Home
Abstract: This project aims to accomplish the development of a contemporary mirror that serves as both a traditional mirror and an Internet of Things device. By incorporating display panels like LED and LCD into the mirror, crucial information may be presented, such as the date, time, headlines, and to-do lists. These mirrors can be programmed using artificial intelligence, but the cost will rise. Consequently, we sought to develop a product that …
Published in Trends in Opto-electro & Optical Communication · Vol. 13, Issue 1, 2023 · pp. 1–15 Read article
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A Review of Potential, Generation and Factors of Solar Energy
Abstract: AbstractPower is the integral part of today’s life. Renewable energy is the demand of time because of its great advantages like non-pollutant, abundant etc. Among all the energy sources, solar energy is most promising, quiet and clean source of energy. India receives great amount of solar radiation throughout its boundaries. This study is to review the potential of solar energy in India, it’s technological development and factors of solar cell.Keywords: …
Published in Journal of Thermal Engineering and Applications · Vol. 5, Issue 2, 2018 · pp. 1–4 Read article
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Effect of 2D-EBG Structure on Monopole Antenna Radiation and Analysis of Its Characteristics
Abstract: In this paper, we present a two dimensional electromagnetic (2D-EBG) square shaped mushroom structure placed between two monopole antennas. Two artificial properties of this 2D-EBG structure such as PMC and Band Reject Region are investigated here. The radiation characteristics of a monopole antenna over this, 2D-EBG structure is tested by considering two cases. In the first case monopole antenna is made to operate within band rejection region where as in …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 2, 2015 · pp. 1–4 Read article
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Effect of Time Exposure on Human Blood by Laser Flash Photolysis
Abstract: Diffuse reflectance laser flash photolysis has been used in blood sample to measure transient triplet spectra of free radical or reactive oxygen species (OH, O2, H2O2) generated in free cell systems was investigated using laser flash photolysis and electronic absorption spectra. In all cases, triplet–triplet absorption spectra with the application of this technique to studies concentration of normal human blood sample. The concentration of normal human blood sample is reduced …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 2, 2020 · pp. 15–20 Read article