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36 articles for “Barrier layer”
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An In-depth Understanding of What A Photoelectric Device Is
Abstract: Here we are going to talk about the details of photoelectric device. First of all, we will get information about what a photoelectric device is and also about it. Thus, we know that there are optical electrical structures that can be identified as photoelectric devices. Thus, the interaction of light with matter produces electricity, which is seen in the phenomenon of photoelectric effect. Here we see a device that gives …
Published in Research & Reviews : Journal of Physics · Vol. 11, Issue 1, 2022 · pp. 1–6 Read article
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DC and RF Analysis on Specific Quantum-Well Heterostructures
Abstract: Polarization-graded AlGaN back-barrier nano-layer is introduced in high electron mobility transistor (HEMT) structure to have an improved drain current characteristics and better radio-frequency performance, using two-dimensional drift-diffusion simulation by SILVACO-ATLAS physical simulator. In this work, the AlGaN/AlN/GaN/AlGaN/GaN double heterojunction HEMT structure is optimised with graded back barrier layer to study the DC and RF performances. Investigation of this structure with graded back barrier layer is the novelty of this work. …
Published in Journal of Semiconductor Devices and Circuits · Vol. 9, Issue 1, 2022 · pp. 1–13 Read article
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Electrical Characteristics of Nanoelectronic Double-Heterojunction High Electron Mobility Transistors
Abstract: AbstractIn this work, a maximum drain current of 554 mA is achieved by the simulated structures of double-heterojunction HEMTs using the SILVACO-ATLAS software tool. The drain current is found to be higher at shorter gate length and at larger aluminium mole fraction. The drain current is also higher at larger thickness of AlGaN barrier layer and at larger doping concentration of AlGaN barrier layer.In this work, the formation of 2-DEG …
Published in Journal of Semiconductor Devices and Circuits · Vol. 7, Issue 1, 2020 · pp. 18–28 Read article
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Novel Characteristics of GaN based Nanoelectronic Double-Heterojunction HEMTs to Establish a Solid-State-Electronics Laboratory
Abstract: The drain characteristics are investigated with respect to electrical variables (drain voltage, gate voltage) and structural parameters of high electron mobility transistors (HEMTs). Total 10526 individual simulation-outputs are reported in this work. The maximum drain current of 553 mA is achieved by the simulated structures of double-heterojunction HEMTs using the SILVACO-ATLAS software tool. The drain current is higher at shorter gate length. The drain current is higher at larger aluminium …
Published in Journal of Semiconductor Devices and Circuits · Vol. 4, Issue 3, 2017 · pp. 11–20 Read article
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Gallium Nitride based HEMTs in Nano-Scale Regime
Abstract: AbstractIn this work, a maximum drain current of 557 mA is achieved by the simulated structures of double-heterojunction HEMTs using the SILVACO-ATLAS software tool. The drain current is found to be higher at shorter gate length. The drain current is observed as higher at larger aluminium mole fraction. The drain current is also higher at larger thickness of AlGaN barrier layer. Again, the drain current is higher at larger doping …
Published in Journal of Microelectronics and Solid State Devices · Vol. 5, Issue 3, 2018 · pp. 11–21 Read article
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Electrical Characteristics of AlGaN/GaN/AlGaN HEMTs
Abstract: AbstractA maximum drain current of 556 mA is achieved by the simulated structures of double-heterojunction AlGaN/GaN/AlGaN high electron mobility transistors (HEMTs) using the SILVACO-ATLAS software tool in this work. The drain current is observed as higher at shorter gate length. The drain current is found as higher at larger aluminium mole fraction. Also, the drain current is found as higher at larger thickness of AlGaN barrier layer. The drain current …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 3, 2018 · pp. 7–17 Read article
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Electrical Characteristics and Probable Applications of High Electron Mobility Transistors for Very Large Scale Integration Circuits in Microelectronics and Nanoelectronics Industry
Abstract: In our work, a maximum drain current of 556 mA is achieved by the simulated structures of double-heterojunction high electron mobility transistors (HEMTs) using the SILVACO-ATLAS physical simulator. According to the results, drain current is higher at shorter gate length. Also, drain current is higher at larger aluminium mole fraction. Further, drain current is higher at larger thickness of AlGaN barrier layer. Again, drain current is found as higher at …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 22, Issue 2, 2020 · pp. 8–14 Read article
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Synthesis and Dielectric Properties of CaCu3Ti4O12 Doped with La3+
Abstract: The effect La3+ doping on the structural and dielectric properties of CaCu3Ti4O12 (CCTO) is investigated, resulting in a compound of the type Ca1-xLaxCu3Ti4O12 (x = 0.00, 0.20 and 0.50). The compounds have been prepared by conventional solid state reaction. The Ca1-xLaxCu3Ti4O12 ceramics were characterized by X-ray diffraction, SEM techniques. The grain size and the grain boundary resistivity increased with the increase of doping percentages. Dielectric constant of the samples decreases …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 3, 2019 · pp. 22–26 Read article
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Application of Prodrug to Improve Skin Permeability: A Review
Abstract: Administration of drug via skin has some limitations such as skin barrier, solubility of drug and partition coefficient etc. Stratum corneum which is an outer skin layer, acts as a barrier to the skin. Thus, prodrug has some applications to improve skin permeability. Prodrugs are defined as the compounds which are initially inactive but covert into their active form when reacted with several chemicals or enzymes at particular active site …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 8, Issue 1, 2023 · pp. 1–11 Read article
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Nuclear Reactor Safety Using Fuel Pallet: A Study
Abstract: Nuclear power stands as a vital source of low-carbon electricity, but its widespread acceptance hinges critically on unwavering safety. While public perception often focuses on massive containment buildings, intricate cooling systems, and redundant backup power, a less visible yet fundamentally crucial component plays a paramount role in safety. There is much more to these tiny, cylindrical ceramic pellets than just fissionable material. As an essential part of a reactor's defense-in-depth …
Published in Journal of Nuclear Engineering & Technology · Vol. 15, Issue 3, 2025 · pp. 16–23 Read article
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Microneedles: A Potential Drug Delivery System for the Treatment of Cancer
Abstract: Hypodermic needles, topical lotions, and transdermal patches are the most common methods for transdermal drug administration. Most medicinal drugs have a limited effect due to the stratum corneum layer of the skin, which acts as a barrier for molecules, allowing only a few molecules to reach the site of action. Microneedles are a novel type of delivery method that helps to improve medication administration through this route while also solving …
Published in Trends in Drug Delivery · Vol. 9, Issue 1, 2022 · pp. 39–61 Read article
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Sustainable Epoxy Composites Enhanced by Cellulose Nanocrystals for Structural and Thermal Applications
Abstract: This study presents the advancement and behaviour analysis of sustainable nanocomposites reinforced with cellulose nanocrystals (CNCs), a biodegradable and high-aspect-ratio nanofiller derived from microcrystalline cellulose. CNCs were incorporated into a bisphenol-A-based epoxy matrix at varying concentrations (0, 1, 3, 5, and 7 wt%) to assess their influence on mechanical, thermal, and viscoelastic properties. The tensile strength of the composites increased significantly, from 45 MPa for neat epoxy to 65 MPa …
Published in Journal of Polymer & Composites · Vol. 13, Issue 3, 2025 · pp. 126–134 Read article
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Resistance Spot Welding of Aluminum Alloy with Reference of Mechanical Properties and Microstructure: A Review
Abstract: This paper presents review on the resistance welding of Al to Al, Al to Mg, Al to Al with steel as an interlayer with focus of mechanical properties and microstructure. Major barrier for the aluminum welding is the surface oxide layer which induces higher resistance for the welding of resistance spot welding. It results in the immediate tip wear of electrode and also gives effect on the properties of weld …
Published in Trends in Mechanical Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 1–6 Read article
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Role of Clay Liners in Municipal Solid Waste Landfills: A Review
Abstract: Rapid population growth has significantly increased the generation of municipal solid waste (MSW) in urban and suburban regions. Disposal of MSW in landfills without proper liner systems may lead to leachate migration and subsequent contamination of groundwater and surrounding soils. The use of liner systems at the base of landfills is therefore essential to minimize leachate percolation and protect the environment. Geosynthetic clay liners (GCLs) and compacted clay liners (CCLs) …
Published in Journal of Geotechnical Engineering · Vol. 13, Issue 2, 2026 · pp. 50–56 Read article
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Current status of reinforced thermal spray coatings to increase corrosion resistance of boiler tube steels
Abstract: AbstractThermal barrier coatings are one of the best techniques to protect the metal surface from erosion corrosion attach. Aluminium and nickel based alloys are extensively used as thermal barrier coated materials with various techniques such as HVOF, APS etc. The techniques for applying the coatings gain their importance in thermal spray which results to get a layer deposited without affecting the properties of substrate material. Thermal spray coatings have been …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 5, Issue 3, 2018 · pp. 1–7 Read article
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Investigating mosquito innate immune defence mechanism towards malaria vaccine development
Abstract: Mosquito-borne diseases weigh heavily on public health across the globe. The mosquito’s innate immune system certainly decides whether malaria parasites survive inside the vector, and that sighted it as a logical place to discover new vaccine ideas. In this review, we examine how Anopheles mosquitoes defend themselves against Plasmodium parasites and how those defenses could be turned into tools for malaria control. We focus on three layers of immunity: antimicrobial …
Published in International Journal of Insects · Vol. 3, Issue 1, 2026 · pp. 50–54 Read article
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A Study on Innovations in Primary Containment Technology for Safer Nuclear Power
Abstract: Nuclear power is a powerful carbon-free energy source that balances enormous potential with widespread public fear. Fear of radioactive leakage, a catastrophic catastrophe that might have long-lasting effects on the environs and human health, is at the core of this anxiety. The future of nuclear energy depends on finding a solution to this issue, and at the heart of that debate is the idea of primary containment, a technological marvel …
Published in Journal of Nuclear Engineering & Technology · Vol. 15, Issue 3, 2025 · pp. 37–44 Read article
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Experimental Investigation on Heat Transfer Characteristics of Thermal Barrier Coating on Aero Engine Components
Abstract: The gas turbine blades play a crucial role in harnessing energy from the high-temperature and highpressure gas generated by the combustor. To withstand this challenging environment, turbine blades often employ super-alloys and incorporate new manufacturing technologies such as Direct Solidification (DS) and Single Crystal (SC). Additionally, the development of advanced ceramic Thermal Barrier Coating (TBC) is imperative to achieve higher operating temperatures (>1200°C). Therefore, the primary focus of this study …
Published in Journal of Polymer & Composites · Vol. 11, Issue 13, 2023 · pp. 50–58 Read article
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Bionanocomposites in Green Synthesis of Bioplastics - The Composite Materials of Future & Their Role in Circular Bio-Economy
Abstract: The pervasive use of petroleum-derived plastics has caused severe environmental pollution, accumulating in landfills and oceans while threatening human and animal health. This ecological crisis has accelerated an urgent transition toward biodegradable polymers within the circular bioeconomy. Bionanocomposites, comprising a biodegradable polymer matrix integrated with nanoscale fillers, successfully bridge the gap between high industrial performance and environmental responsibility. By incorporating advanced nanofillers such as cellulose nanocrystals, chitin nanofibers, layered silicates …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 16, Issue 2, 2026 Read article
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Development of Biomass-Derived Composites From Commodity Plastics Via Pyrolysis For Enhanced Corrosion Protection of Metals
Abstract: Escalating environmental concerns and the depletion of fossil resources have spurred the need for sustainable and eco-friendly materials. By converting plastic waste into valuable carbonaceous materials via pyrolysis, both plastic pollution and resource scarcity can be addressed. The process involves the thermal decomposition of plastics in an inert atmosphere, producing a mixture of gases, liquids, and solid residues rich in carbon. These carbonaceous residues are then incorporated with biomass materials …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 59–70 Read article