The Experts below are selected from a list of 165 Experts worldwide ranked by ideXlab platform
T A Fjeldly - One of the best experts on this subject based on the ideXlab platform.
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effects of strain relaxation on bare Surface Barrier height and two dimensional electron gas in alxga1 xn gan heterostructures
Journal of Applied Physics, 2013Co-Authors: Nitin Goyal, T A FjeldlyAbstract:A physics based analytical model is presented to describe the bare Surface Barrier height and the two-dimensional electron gas density in AlGaN/GaN heterostructures versus Barrier layer thickness and Al content. Details of the model rely on the extraction of the critical thickness for strain relaxation based on the identification of a signature cusp in experimentally obtained bare Surface Barrier heights. This information is used to obtain the residual strain and total effective polarization when strain relaxation takes place. The model, which covers both unrelaxed and relaxed Barriers, shows good agreement with reported experimental results and promises to become a useful tool in advanced design and characterization of GaN based heterostructures.
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analytical modeling of bare Surface Barrier height and charge density in algan gan heterostructures
Applied Physics Letters, 2012Co-Authors: Nitin Goyal, Benjamin Iniguez, T A FjeldlyAbstract:In this paper, a physics based analytical model for the bare Surface Barrier height and two dimensional electron gas density in AlGaN/GaN heterostructures is presented. The model is based on simple charge neutrality electrostatics across the AlGaN Barrier layer and that a low density of Surface donor states is the source of the two dimensional electron gas. The model shows good agreement with reported experimental results.
Nitin Goyal - One of the best experts on this subject based on the ideXlab platform.
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effects of strain relaxation on bare Surface Barrier height and two dimensional electron gas in alxga1 xn gan heterostructures
Journal of Applied Physics, 2013Co-Authors: Nitin Goyal, T A FjeldlyAbstract:A physics based analytical model is presented to describe the bare Surface Barrier height and the two-dimensional electron gas density in AlGaN/GaN heterostructures versus Barrier layer thickness and Al content. Details of the model rely on the extraction of the critical thickness for strain relaxation based on the identification of a signature cusp in experimentally obtained bare Surface Barrier heights. This information is used to obtain the residual strain and total effective polarization when strain relaxation takes place. The model, which covers both unrelaxed and relaxed Barriers, shows good agreement with reported experimental results and promises to become a useful tool in advanced design and characterization of GaN based heterostructures.
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analytical modeling of bare Surface Barrier height and charge density in algan gan heterostructures
Applied Physics Letters, 2012Co-Authors: Nitin Goyal, Benjamin Iniguez, T A FjeldlyAbstract:In this paper, a physics based analytical model for the bare Surface Barrier height and two dimensional electron gas density in AlGaN/GaN heterostructures is presented. The model is based on simple charge neutrality electrostatics across the AlGaN Barrier layer and that a low density of Surface donor states is the source of the two dimensional electron gas. The model shows good agreement with reported experimental results.
Mirko Cernak - One of the best experts on this subject based on the ideXlab platform.
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plasma activation of wood Surface by diffuse coplanar Surface Barrier discharge
Plasma Chemistry and Plasma Processing, 2008Co-Authors: Maria Odraskova, Jozef Rahel, Anna Zahoranova, Radovan Tiňo, Mirko CernakAbstract:Radial cuts of Pedunculate oak (Quercus robur L.) heartwood was activated by Diffuse Coplanar Surface Barrier Discharge (DCSBD) plasma. The plasma treatment resulted in a considerable increase of free Surface energy and in the substantial reduction of 50 μl water droplet uptake time. FTIR analysis confirmed the formation of additional polar functional groups on the wood Surface due to the plasma treatment. This is consistent with the shift of wood Surface pH level towards more acidic values. The energy efficiency of the DCSBD plasma treatment is better comparing to the known volume dielectric Barrier discharge treatment method.
Size Yang - One of the best experts on this subject based on the ideXlab platform.
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the cold and atmospheric pressure air Surface Barrier discharge plasma for large area sterilization applications
Applied Physics Letters, 2011Co-Authors: Dacheng Wang, Di Zhao, Kecheng Feng, Xianhui Zhang, Size YangAbstract:This letter reports a stable air Surface Barrier discharge device for large-area sterilization applications at room temperature. This design may result in visually uniform plasmas with the electrode area scaled up (or down) to the required size. A comparison for the survival rates of Escherichia coli from air, N2 and O2 Surface Barrier discharge plasmas is presented, and the air Surface plasma consisting of strong filamentary discharges can efficiently kill Escherichia coli. Optical emission measurements indicate that reactive species such as O and OH generated in the room temperature air plasmas play a significant role in the sterilization process.
A. G. Saif - One of the best experts on this subject based on the ideXlab platform.
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The Surface Barrier of a uniaxial anisotropic superconductor
Physica Status Solidi B-basic Solid State Physics, 2006Co-Authors: A. G. SaifAbstract:The role of a transport current on the annihilation of the Surface Barrier for a high-temperature type-II superconducting infinite slab of arbitrary thickness as well as for a high-temperature type-II superconducting cylinder are investigated. The London penetrating field, the vortex fields, and the Gibbs potential are calculated. The Barrier depends on the external field strength, the value of the transport current flowing through the sample, and the orientation of the external field. Agreement with previous results in some cases is found.
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Surface Barrier at the Edge of a Uniaxial Anisotropic Type‐II Superconductor
Physica Status Solidi B-basic Solid State Physics, 1995Co-Authors: A. G. Saif, M. A. El‐sabaghAbstract:The structure of the Surface Barrier, using the uniaxial anisotropic London equation, for a high-temperature type-II supcrconducting quarter-space, is studied. The role of a transport current on the annihilation of the Surface Barrier is investigated. It is found that this Barrier depends on the external field strength, the value of the transport current flowing through the sample, and the orientation of the external field. It is shown that the results obtained will reduce to some known results in some limiting case.
