Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Excellent surface passivation of boron emitters is demonstrated for industrial plasma-enhanced chemical vapor deposited (PECVD) SiO x /AlO x stacks. Emitter saturation current densities of 39 and 34 fA/cm2, respectively, were achieved at 300 K on 80 Ω/sq boron emitters after activation by (i) a standard industrial fir…
The high strength low alloy (HSLA) steels have been extensively used in offshore engineering. The appropriate microstructure of the HSLA structural steels was designedly controlled in steel making for offshore construction. The different microstructures of the steel were formed when shifted the cooling rate after fina…
The dynamic control of the dielectric response in magnetoelectric (ME) nanocomposites (NCs) renders an entire additional degree of freedom to the functionality of miniaturized magnetoelectronics and spintronics devices. In composite materials, the ME effect is realized by using the concept of product properties. Throu…
The processes of defect formation in sapphire, which determine the plastic behavior of the material, are studied using classical and quantum simulations. Three slip systems, i.e., basal, pyramidal, and prismatic, are considered, and the activation energy and the critical stresses of defect nucleation are determined.
We investigated the doping profiles of Mg and Si dopants near the multiple quantum well (MQW) active region in 640-nm-band GaInP-AlGaInP red laser diodes (LDs). With a 200-nm-thick Mg diffusion barrier, optimal doping profiles were obtained with an Mg flow rate of 80 sccm. Without a Si diffusion barrier, significant S…
A corona type ionizer is a device that supplies air flow including positive and negative corona ions for the elimination of electrostatic charges on a charged target. DC ionizers placed close to the charged target are proposed to shorten the charge elimination time and decrease the remaining voltage. The ionizer is co…
분말직송압연에 따른 티타늄 분말 집합체의 치밀화 거동을 연구하였다. 이와 관련하여 실험 시 나타나는 롤-밀림 현상을 분석하기 위한 이론적 모델을 개발하였으며, 이를 통해 보다 실질적인 유한요소 해석을 수행하였다. 개발된 롤-밀림 모델을 통해 공정변수에 따른 롤-밀림의 경향을 정량적으로 파악하였으며, 분말직송압연 공정의 유한요소 해석을 통해 판재의 위치 별 최종 상대 밀도를 비교적 정확히 예측할 수 있었다. 아울러 공정 시 분말집합체의 치밀화 현상을 이해하기 위해 분말-롤 간 접촉 압력 및 전단응력을 계산하였으며 이를 통해 분말의 물림현상이 나타나는 영역을 보다 명확…
Differential Thermal Analysis(DTA) and Differential scanning calorimetry (DSC) were used to study the effect of Bamboo Powder(BP) on the curing behavior of two types of liquefied bamboo-based resol resin(PBF). DTA analysis shows that the addition of bamboo powder to the PBF resin leads to low temperature and broad pea…
In this paper, we propose an approach for the determination of static force characteristic of E-type single phase AC electromagnet using 2D numerical models developed in QuickField and FEMM software. The magnetic attraction force is estimated using Maxwell stress tensor method. The results obtained with numerical mode…
The dynamics of microcracks in the surface layers of a polymer and a polymer composite during friction is studied by triboluminescence (TL). The samples are prepared from poly(phenylene sulfide) (PPS) and a composite consisting of PPS reinforced by carbon fibers. An analysis of the spectra shows that TL appears during…
The dispersion properties of boron carbide (B4C) microparticles in aqueous media were investigated by measuring the particle size distribution, the dispersibility, and the zeta potential as these properties relate to their application as neutron absorbers in fuel-storage pool water. The B4C powder is composed of parti…
The molecular dynamics method was used to simulate thermodynamic properties of two binary alloys: Al75 Si25, Al85 Si15..They were calculated of the energy functions, including cohesive energy , formation energy. Results display, formation energy and excess free energy are all negative values, so Al-Si alloys belong to…
TiO2nanotube arrays were fabricated by anodic oxidation. It was studied that the influences of the parameters for the preparation of TiO2nanotube arrays on the micrograph of the material, such as anodizing potential, annealing temperature. Then it is used in the dye sensitized solar cell (DSSC).The microstructures and…
FPD has been progressing toward to a Flexible Film Display realize a true real image by curved screen with film technology from conventional FPD with glass plate. A Luminous Array Film (LAFi) is the world first film type display technology that realizes a bendable super large area emissive display. We successfully dev…
Single gate and double gate GNRFETs with 5-20% doping of potassium (K) in source (S), drain (D) and channel region having width (W)=2 and 5 nm have been synthesized. On-to-off current ratio (Ion/Ioff) and sub-threshold swing (S) for single gate GNRFET having W=2nm with 10% of K doping have been found to be ~10 and ~20…
The structural and electronic properties of inclusion or interconnection between NT and PVC were studied by quantum semiepirical approximation method using (PM3) self-consistent ?eld molecular orbital method. The total structural energy, HOMO level energy, LUMO level energy, band gap?(E?_g ?=E?_HOMO-E_LUMO), and dipol…
An electrochemical sensor was used to measure hydrogen permeation behavior in atmospheric environment. The results show that the hydrogen permeation current density increased with the temperature increase. Temperature has strong effects on hydrogen permeation current even to uncorroded alloys due to molecular motion e…
Active Power Filter (APF) is an important power electronic device to compensate the load harmonic current so as to improve power quality of the system. Stability of voltage across the capacitor in DC side of APF is one of the key factors which determine the compensation effect. Therefore voltage ripple should be contr…
The synthesis of bio-base polymer materials from renewable wood biomass resources has attracted lots of attention. Polyurethane building materials based on lignin were prepared by lignin polyol and isocyanate. Lignin was modified by polyethylene glycol and glycerol to obtain lignin polyol, and polyurethane material ba…
High voltage insulator