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Showing 1 to 13 of 13 for “"Barrier Material"”.
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Reliability of W-Band InAIN/GaN High Electron Mobility Transistors
… short-channel effects requires shrinking the barrier thickness at the same time. However, a limitation exists since there is a minimum barrier thickness that is needed to obtain a sufficiently high two-dimensional electron gas density. One possible solution to this problem is the use of a new …
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Engineering characteristics of compacted sand-bentonite mixtures
Sand-clay mixtures are commonly used as a liner/barrier material in various engineering applications, such as construction of hydraulic and waste containments. Permeability, compressibility and strength are important properties of sand-clay mixtures and are often required for the design of the …
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Microstructural and mechanical characterization of silicon carbide irradiated with 158 MeV xenon swift heavy ions.
… hardness testing will evaluate changes in the material's hardness. Additionally, Atomic Force Microscopy (AFM) will be used to study surface structural modifications and to extract mechanical properties such as Young's modulus and compressibility. Results revealed defect-induced hardening at …
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Functionalized multilayer thin films for protection against acutely toxic agents
… transport rates as compared to an inert rubber barrier material. Second, the physics of sprayed deposition are investigated to generate metal-ion doped polymeric coatings which are shown to be effective treatments for air filtration, functionalizing existing filters with the ability to strongly …
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Considerations of mineralogy and permeability testing of selected Sand/Bentonite mixes
… to obtain the respective properties of the test materials. A flexible membrane test setup in connection with the falling head principle was used to determine the permeability of the mixes. A wide variety of bentonite percentage mixes (by mass) and a range of confinement pressures were …
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Non-Sinusoidal Current -Phase Relations in Superconductor-Ferromagnet-Superconductor Josephson Junctions
… or a phase difference of pi, depending on the barrier thickness. The oscillation length is a function of the ferromagnetic exchange energy, Eex, and temperature, so SFS junctions with Eex ≈ Tc (the superconducting transition temperature) that are fabricated near a 0-to-pi crossover thickness …
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Tailoring Superconductor and SOFC Structures for Power Applications
… printed tracks where an initially deposited barrier material separates superconducting regions. Furthermore, the concept and first stages of a more complex ‘Rutherford’ cable architecture are presented. Additionally, Section I investigates how waste material produced during the manufacture of …
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The Effects of Barrier Materials on Reduction of Pericardial Adhesion Formation in Rabbits
목적: 이 연구의 목적은 hyaluronic acid 의 유도체로 액체의 점성을 지니는 가딕스-SL 과 최근 개발된 열 감응성 액체/겔 물질인 가딕스-SG 의 효능과 안전성을 토끼 심낭 유착모델을 이용하여 비교 분석하는 데에 있다. 방법: 총 60마리의 토끼를 외심막에 찰과상을 유발한 후에 적용시킨 물질의 종류에 따라 세 군으로 나누었다. CO군은 대조군으로 생리 식염수가 도포되었다. SL군은 가딕스-SL이, SG군은 가딕스-SG가 도포되었다. 수술 직후 그리고 수술 2주 후에 심장초음파로 좌심실박출계수, 그리고 심낭삼출의 유무를 …
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Indium-Gallium-Arsenide Quantum Wire Infrared Photodetectors
… with different number of SPS pairs and barrier material. The multiple-layer QRIP structure was proven to be strained-balanced by examining the high-resolution X-ray diffraction (HRXRD) spectra. Excellent layer-to-layer QWR uniformity and optical quality in QRIP structures were achieved …
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Growth, characterization and implementation of semiconductor sources of highly entangled photons
… migration time and the Al concentration in the barrier material. This enables the generation of large emitter ensembles tailored to match the optical transitions of rubidium, a leading quantum memory candidate. The photon coherence is enhanced by an optimized As flux during the growth process …
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The fundamentals of the separation of a mixture of hydrogen and carbon dioxide by gaseous diffusion
… one diffusion unit with two 6-inch diameter barrier areas. In the preliminary tests the flow rates of the hydrogen-carbon dioxide mixture were varied from 0 to 15 cubic feet per hour. Vacuum on the system was varied from 0 to 25 inches of mercury. Composition of the feed mixture was held …
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Modification of Polymer Membranes: A Study of Crosslinking and In-Situ Growth of Palladium-Containing Nanoparticles in Polymer Matrices.
… and stress-relaxation tests reveal that the material stiffens, and possesses a long relaxation time that increases, with increasing tx. Although differential scanning calorimetry shows that the glass transition temperature decreases systematically with increasing tx, permeation studies …