Materials Literature
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The optoelectronic properties of GaN-based multiple quantum well (MQW) light-emitting diodes (LEDs) are investigated using a detailed theoretical model, in which the effects of strain, well coupling, valence band mixing, and polarization effects are fully considered. By solving the conduction and valence band effectiv…
Heat pulse methods include the dual-probe (DP) and single-probe (SP) methods. The DP method is a widely used method for determining the thermal conductivity (K) and thermal diffusivity (β) of soil. The SP method has been traditionally used for measuring K only. The objective of this study was to examine if the SP meth…
We propose Non-Volatile Oxide Semiconductor Random Access Memory (NOSRAM) that is a novel memory including a transistor using an oxide semiconductor, In-Ga-Zn Oxide. OS transistors feature extremely low leakage current of about 100-600 yA/μm (1 yA = 10-24A) at 85°C for example, and are applicable to memory elements. O…
A novel 1.7kV IGBT with deep floating-p layers separated from trench gates has been developed to realize low loss, low EMI noise, and high reliability. Separating floating-p layers from the trench gates reduces excess VGEovershoot, which results in a 51% smaller reverse recovery dVAK/dt than the conventional IGBT. The…
A novel procedure for the electrochemical deposition of Fe-Ni-Cr alloy was investigated on mild steel substrate. The alloy contains approximately 53-61% Fe, 34-41% Ni, and 4-15% Cr, our results show that it is possible to produce a thick deposit of the alloy. The influence of electrodeposition potential upon the Fe, N…
Israel Journal of ChemistryVolume 51, Issue 5-6 p. 492-494 Guest EditorialFree Access The World of Cucurbiturils — From Peculiarity to Commodity First published: 24 May 2011 https://doi.org/10.1002/ijch.201100052Citations: 28AboutSectionsPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareSha…
This paper describes a novel low temperature Cu-Cu direct bonding method using formic acid vapor pretreatment. The in situ dry process of reduction using formic acid vapor is developed to realize Cu-Cu direct bonding at low temperature and in low vacuum. In order to analyze the Cu film surface reduction by formic acid…
The applicability of decomposable biopolymer (polylactide - PLA) as Printed Wiring Board (PWB) substrate was investigated. A novel approach for low temperature reflow soldering was applied. Different types of PLA boards were prepared and each type was qualitatively characterized. The realized circuit was designed for…
Nanostructured needle like, hydroxyapatite (HAp) samples were prepared by a simple approach using biomaterial (egg shell membrane) and characterized by Fourier transform infra-red spectroscopy (FT-IR), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techni…
Lower hybrid current drive (LHCD) is an attractive tool for off-axis current profile control in magnetically confined tokamak plasmas and burning plasmas (ITER), because of its high current drive efficiency. The LHCD system on Alcator C-Mod operates at 4.6 GHz, with ~ 1 MW of coupled power, and can produce a wide rang…
A simple model based on the statistics of single atoms is developed to predict the stability or lifetime of nanodevices without empirical parameters. Under certain conditions, the model produces the Arrhenius law and the Meyer-Neldel compensation rule. Compared with the classical molecular-dynamics simulations for pre…
Abstract The combination of NOx gas which is stored in the pore canals of porous silica beads (PSB) with a heterogeneous catalyst, PSB‐supported 2,2,6,6‐tetramethylpiperdine 1‐oxyl (PSB‐TEMPO, 1), afforded a highly efficient, widely applicable, and efficiently recyclable approach for the selective aerobic oxidation of…
As an important functional material, Bi 2 O 3 is found in seven polymorphs. We systematically analyze the transformation from α-, β- and ∊- to δ-Bi 2 O 3 by using crystallographic group theory and structural simulations. A transition phase is proved to exist in the transformation from the α-, β- and ∊-Bi 2 O 3 to δ-Bi…
The crystallographic complexity of “hexagonal” or “intermediate” pyrrhotites (Fe 1-x S with 0.125 > x > 0.080) is a long-standing and challenging problem. Integral (e.g., 5C) and non-integral NC type structures found within this group at ambient temperatures are characterized by sharp but complicated electron diffract…
We formulate the problem of energy consumption and reliability oriented application mapping on regular Network-on-Chip topologies. We propose a novel branch-and-bound based algorithm to solve this problem. Reliability is estimated by an efficient Monte Carlo algorithm based on the destruction spectrum of the network.…
Abstract The main goal of this study was to evaluate different corrosion measurement techniques in order to determine the most accurate methods for measuring the corrosion rate of steel bars in reinforced steel concrete. For this purpose, reinforced concrete specimens were cast and exposed to salt solution and the cor…
Captopril (CAP) was the first angiotensin I-converting enzyme (ACE) inhibitor to be developed and is widely used in hypertension treatment. On the other hand, cyclodextrins (CDs) are cyclic oligosaccharides whose cone-shaped cavity allows formation of noncovalent inclusion complexes with appropriately sized guest mole…
Failures due to Electromigration (EM) in flip-chip bumps have emerged as a major reliability concern due to potential elimination of Pb from flip-chip bumps and a continuous drive to increased IO density resulting in a reduction of bump pitch and size. Additionally, the rapid development and implementation of 3D IC st…
Comparing to the conventional bath heating, the effects of liquefaction parameters on the degree of liquefaction of wood in polyhydric alcohols by using microwave as an energy source were evaluated. Polyurethane foams were successfully prepared from the liquefied biomass-based polyols. The effects of heating methods (…
Polymethyl methacrylate (PMMA) and related cosmetic ingredients methyl methacrylate crosspolymer and methyl methacrylate/glycol dimethacrylate crosspolymer are polymers that function as film formers and viscosity-increasing agents in cosmetics. The Food and Drug Administration (FDA) determination of safety of PMMA use…