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。
Abstract We reported a new characterization of polymer stabilized blue phase liquid crystal (PSBPLC) by using CIE examination. The results of CIE curve rendered a remarkable turning point when BPII formed in the test cell. We believe this new finding will be useful in manufacturing PSBPLC displays.
The traditional method of preparation alumina insulation material includes the addition of pore-forming agent, direct foaming, foam impregnation and gel-casting. In this experiment, α-alumina as raw material, silica fume as an additive, Combination freeze-drying method, add pore-forming agent and direct foaming succes…
Non-linear loads, especially power electronic loads, create harmonic currents and voltages in the power systems. For many years, various active power filters (APF) have been developed to suppress the harmonics, as well as compensate for reactive power, so that the utility grid will supply sinusoidal voltage and curren…
Hydrogen charging was electrochemically conducted at higjh strength DP steels and TRIP steel with varying charging time. The penetration depths and the mechanical properties with charging conditions were investigated through the distribution of micro-hardness and the microstructural observation of the subsurface zone.…
Energy consumption in our society is increasing rapidly. A significant fraction of the energy is lost in the form of heat. In this talk we introduce thermoelectric devices that allow direct conversion of heat into electricity. A key requirement to improve the efficiency is to increase the Seebeck coefficient (S) and t…
Technical and economic viability of photovoltaic (PV) technology are governed by three parameters: efficiency, cost and lifetime. Since its inception, the main driver in organic photovolatics (OPV) research has been towards achieving high efficiency. Continued effort was fructified as achievement of 10 % efficiency, w…
A new concept of a plasmonic waveguide for optical frequencies is introduced. The waveguide is inspired by the half-mode substrate-integrated waveguide (HMSIW), which is in use in the microwave regime. The design of the plasmonic HMSIW however requires to take into account the particularities of the materials in the o…
The emitter dopant profile between the metal grid in lase doping selective emitter cells was modified by oxidation the phosphosilicate glass (PSG) film at a higher temperature. This diffusion process contains two steps. Step 1 form the PSG layer on the wafer surface by the reaction of POCl3and oxygen. Step 2 increase…
Abstract In this paper, we describe the development of high efficiency deep blue phosphorescent organic light emitting diodes using high triplet energy host and charge transport materials. The quantum efficiency of deep blue phosphorescent organic light‐emitting diodes could be improved above 20% by using high triplet…
PCB에칭에 의해 발생한 염화철 폐식각액 중 염화철을 산화시키고 구리를 석출시키는 전기화학적 재생공정은 환경오염을 줄이면서도 부산물을 얻어내어 경제성이 크다. 그러나, 염화철 폐식각액은 철과 구리, 두 가지 금속이 함께 함유되어 있기 때문에 전해조에서 일어나는 반응이 복잡하다. 본 연구에서는 회분식 공정을 통하여 전기화학적인 염화철 산화 및 구리 석출반응의 특성을 조사하고 관련된 공정변수들의 최적 조건을 도출해내었다. 염화철의 산화는 항상 원하는 수준으로 되었으며, 탄소 음전극을 사용한 반응에서 350 mA/cm²의 전류밀도와 12 g/L의 구리 농도 조건에서, F…
In this paper, we report on the analysis of transmissivity of electromagnetic waves through a stack of dielectric slabs loaded with atomically thin graphene sheets at low-terahertz frequencies. It is observed that the structure supports a series of bandpass regions separated by bandgap regions, similar to the case of…
This research was supported by the Office of Basic Science of the Department of Energy.
In this study we present the fabrication process and characterization techniques to integrate metallic nanostructures on the surface of crystalline Si (c-Si) solar cells. These structures are designed to enhance light trapping at particular wavelengths [2]. Tuning the wavelength to maximize the efficiency can be achie…
A new double-layer lattice structure based on C/SiC composite material is described and being investigated as a means to increase the service temperature of thermal protection structure. The design incorporates a C/SiC double-layer sandwich comprising two pyramidal truss cores. The outer layer of the sandwich structur…
Tri-block copolymer를 유연 템플레이트로 사용한 수열합성법에 의해 메조다공성 아나타제상 TiO₂ 나노입자를 합성하였다. 합성된 TiO₂ 재료는 230 m²/g의 매우 큰 표면적을 가졌으며 6.8 nm의 기공크기와 0.404 mL/g의 기공부피를 보였다. 리튬이온전지 음극재로서의 가능성을 확인하기 위해 코인셀 테스트를 실시하였는데 0.1 C에서 240 mAh/g의 방전 용량을 얻었으며 이는 LTO (Li₄Ti 5 O 12 )의 이론 방전 용량인 175 mAh/g 보다 훨씬 큰 값이었다. 비록 C-rate가 증가함에 따라 용량이 감소하는 모습을 보였으나…
This study illustrates a novel method of transforming between two refractory nitride thin films at temperatures well below their respective melting points. Silicon nitride (Si3N4) is an excellent thermal and electronic insulator, with applications in the microelectronic, automotive and technical ceramic industries. Th…
Abstract A thermal process has been developed to create 3D cover glass for mobile device applications. After forming, the glass is ion‐exchanged to make a strong, damage‐resistant structure. The response of this glass to stress and damage events is equivalent to that of 2D Corning® Gorilla® Glass.
The Diamond like carbon and boron nitride (DLC/BN) bilayer thin films were deposited onto silicon and nitride silicon substrates (100), by pulsed laser deposition system (PLD). The deposition was conducted with Nd:YAG laser with a wavelength of 1064 nm. The growth of bilayer was carried out under argon atmosphere, usi…
The objective of this research was to fabricate Ag nanoparticles and control their sizes. Colloidal Ag nanoparticles with particle size of 30 nm were prepared by dissolving AgNO3 in ethanol and through the chemical reduction of Ag+ in alcohol solution. To control the nanoparticle size, different samples were fabricate…
Features technologies of causing of thermal method coverage’s are considered in the article. The compared analysis of basic methods of covering thermal is conducted on some indexes, and also the examples of the use of modern covering materials are resulted