Materials Literature
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Laser-assisted chemical vapor deposition growth is an attractive mask-less process for growing locally aligned nanotubes in selected places on temperature sensitive substrates. An essential parameter for a successful and reproducible synthesis of nanotubes is the temperature during growth. Here, we demonstrate a tempe…
The via interconnects are key components in ultra-large scale integrated circuits (ULSI). This paper deals with a new method to create single-walled carbon nanotubes (SWNTs) via interconnects using alternating dielectrophoresis (DEP). Carbon nanotubes are vertically assembled in the microscale via-holes successfully a…
Dense, uniform ZnO nanowire (NW) networks are prepared by using a simple and sufficient self-assembly method. In this method, ZnO NWs are modified with aminopropyltriethoxysilane (APTES) to form positively charged amine-terminated surfaces. The modified ZnO NWs are adsorbed on negatively charged SiO 2 /Si substrates t…
Quantum dots are defined as very small semiconductor crystals of size varying from nanometer scale to a few micron i.e. so small that they are considered dimensionless and are capable of showing many chemical properties by virtue of which they tend to be lead at one minute and gold at the second minute. Quantum dots h…
Generation of millimeter radiation in a medium based on nanotubes at different profiles of the nonstationary electric field’s front is theoretically studied and mathematically simulated. The radiation gain is based on damped periodic oscillations of the surface current in nanotubes due to kinetic inductance and quantu…
The effects of dispersant amount and solids loading on rheological behaviors of aqueous BeO suspensions were investigated. The relationship of viscosity and solids loading determined experimentally was compared with five various existing models. BeO aqueous suspensions exhibited a shear dependent behavior from shear t…
(1120) ZnO films with the c-axis lying in the plane deposited on R-sapphire substrates by RF magnetron sputtering are studied. The focusing investigation is the effect of substrate positions in the sputtering on structural and acoustic characteristics of the ZnO films. The crystallographic characteristics of the films…
Abstract The influence of surface roughness on the pitting potential and the corrosion potential of the DIN W.Nr. 1.4541 and DIN W.Nr 1.4465 stainless steels were examined using electrochemical techniques. Roughness and electrochemical tests were performed on samples with various surface finishing. Electrochemical stu…
Microwave-absorption materials that have a good magnetic permeability and electrical conductivity are attracting more attentions in the EMI shielding field. This manuscript reported a kind of microwave-absorption FeNi@Ag nanoparticles fabricated through silver mirror reaction, i.e. silver was coated onto the surface o…
Abstract The synthesis of a benzenethiol‐derivatized porphyrin for flat‐lying self‐assembly on gold substrates is described. Acetyl protected thiol is not stable enough in Pd‐catalyzed reactions. While acrylate derivatives protected thiol group shows good tolerance in Pd‐catalyzed borylations and Suzuki‐Miyaura coupli…
We investigate the dinuclear manganese, Mn(II)-Mn(II), active site of human cytosolic X-propyl aminopeptidase (XPNPEP1) employing the QM/MM method. The optimized structure supports two manganese atoms at the active site and excludes the possibility of a single Mn(II) atom or other combination of divalent metal ions: C…
The effect of hydrocarbon slip from a diesel oxidation catalyst on active regeneration of a diesel particulate filter is investigated by developing a generalized zero-dimensional diesel particulate filter model to predict the wall temperature of the diesel particulate filter and the trapped mass of particulate matter.…
After heat treatment at 800°C for 15min, a Cu-Al alloy was cryogenic treated at -196°C for 30min, the micro-mechanical properties of the Cu-Al alloy before and after cryogenic treatment were measured by nanometer mechanical testing system and the microstructure of the Cu-Al alloy were also analyzed by optical microsco…
Abstract In this study, solid-state mechanochemical milling was investigated as a viable strategy to produce high performance blends composed of polypropylene (PP) and ground tire rubber (GTR), thereby providing a potentially new route to recycle discarded tires. The improved dispersion of the blends after mechanochem…
본 연구에서는 embossing 공정과 진공여과법에 의해서 제조된 다공성 그래핀 필름을 슈퍼캐패시터의 전극활물질로 사용하여 우수한 전기화학적 특성을 증명하였다. 그래핀 시트사이에서 Polystyrene 입자들의 삽입/제거 공정을 이용하여 기공 구조들을 제공함으로써 그래핀의 재적층(restacking)을 효과적으로 제어할 수 있었다. 상기 제조된 다공성 그래핀 필름은 넓은 표면적, 상호 연결된 기공 구조, 높은 전기전도도 및 우수한 기계적 물성을 나타내었다. 본 다공성 그래핀 필름을 슈퍼캐패시터의 전극물질로 사용하여 황산 수용액과 이온성 액체 전해질 기반의 3상 전극…
We realized the fabrication of a temporally stabilized continuously tunable laser device using a UV-curable polymerized dye-doped cholesteric liquid crystal wedge cell. The spatial tuning resolution was less than 1 nm over a 70 nm spectral range. The continuous tuning behavior of the polymerized wedge cholesteric liqu…
TiO2 nanowires (NWs) have been synthesized by glancing angle deposition technique using e-beam evaporator. The average length 490 nm and diameter 80 nm of NWs were examined by field emission-scanning electron microscopy. Transmission electron microscopy emphasized that the NWs were widely dispersed at the top. X-ray d…
Dumortierite samples from two pegmatite localities in Antarctica and one each in Germany and Russia show a range of As and Sb compositions (As + Sb + minor Bi = 0.001–0.212 apfu) and low Ta + Nb + Ti (0.001–0.079 apfu). Single-crystal diffraction data obtained from crystals from each sample refined to R 1 = 0.0161–0.0…
The natural polysaccharide chitosan and the natural protein collagen are widely used for the preparation of biopolymer materials in the presence of suitable crosslinkers. In this study, crosslinking feasibility of a dicarboxylic acid, namely suberic acid was tested using chitosan and collagen and in addition, thermal…
국제핵융합실험로(ITER)가 2019년까지 7개국의 공동개발사업으로 건설될 예정이다. ITER의 핵융합연료주기는 핵융합진공용기, 삼중수소 플랜트, 연료공급부로 구성되어 있다. 이중에서 삼중수소 플랜트는 핵융합연료주기를 위한 중 수소와 삼중수소의 저장, 공급, 분리, 제거, 회수 등의 기능을 제공한다. 삼중수소 플랜트는 외부에서 중수소와 삼중수소를 공급받아 저장 공급하는 SDS, 토카막배출처리의 TEP, 수소동위원소 분리의 ISS, 삼중수소수 및 대기 처리의 WDS ADS, 정성 정량분석의 ANS 등으로 구성된다. 이 논문에서는 삼중수소 플랜트를 구성하는 주요 공정에…