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。
Understanding the influence of the microstructure of tungsten on hydrogen transport is crucial for the use of tungsten as first-wall material in fusion reactors. Here, we report the results of molecular dynamics and transition state studies on the influence of grain boundaries in tungsten on the transport of hydrogen.…
Hysteresis and commonly observed p-doping of graphene based field effect transistors (FETs) have been discussed in reports over the last few years. However, the interpretation of experimental works differs; and the mechanism behind the appearance of the hysteresis and the role of charge transfer between graphene and i…
By optimizing of the gate dielectrics and device dimensions, we achieve a record high output current and transconductance of 5 mA/μm and 2 mS/μm in epitaxial graphene FETs. A cut-off frequency of 280 GHz is achieved for a 40-nm graphene FET, the highest so far on any synthesized graphene. Also, highest voltage gain of…
This first demonstration of CNT transistors with channel lengths down to 9 nm shows substantially better scaling behavior than theoretically expected. Numerical simulations suggest that a possible explanation for the surprisingly good performance is a result of the gate modulating both the charge in the channel and in…
Collagens presently used in tissue engineering are primarily of bovine or porcine origin. However, a risk of a spongiform encephalopathy epidemic has limited the use of collagen from these sources. Keeping the aforementioned perspective in mind, we explored the possibility of using domestic goat available in the subco…
Factors affecting on properties of nanofibers fabricated by electrospinning have especially been favored due to fact that electrospun nanofibers are used readily in many areas with different objectives. In this study, effects of applied voltage on morphologies of electrospun nanofibers containing polyvinylalcohol and…
In this paper, analysis and interpretation of mechanical property measurements of -SiAlON ceramic were reported. Indentation microhardness of -SiAlON ceramic was measured using the Knoop and Vickers indenters. The analysis of the Vickers indentation microhardness data reveals the reverse indentation size effect that i…
One of the most unique structural characteristics of carbon nanotubes (CNTs) differentiating from other carbon materials is their hollow nanochannles, which can be utilized for encapsulating and loading foreign matters. The anodic aluminum oxide (AAO) template technique enables the diameter, length, and cap structure…
The reactive hydride composite of 2LiBH 4 –MgH 2 has been melt infiltrated in a resorcinol–furfural (RFF) carbon aerogel scaffold. Dried aerogel of RFF, further pyrolyzed to obtain a carbon aerogel scaffold, is prepared by CO 2 supercritical drying, where time consumption is significantly lower than the normal procedu…
Star polymer architectures were developed as multimodal imaging systems as fluorescence and magnetic resonance imaging (MRI) agents. Acrylate star polymers in hydrodynamic diameters of 10 ± 2 nm comprising fluorene derivatives as core units were modified with dopamine derivatives in adjustable quantities to chelate la…
BACKGROUND: A new simple preparation method for a hippurate-intercalated zinc-layered hydroxide (ZLH) nanohybrid has been established, which does not need an anion-exchange procedure to intercalate the hippurate anion into ZLH interlayers. METHODS: The hippuric acid nanohybrid (HAN) was prepared by direct reaction of…
A method to reproduce colored images with a guided-mode resonance filter (GMRF) array is presented in this Letter. Because of their excellent characteristics, monochromatic light of the three primary colors with high purity can be achieved by using GMRF structures. Moreover, the primary colors are obtained without cha…
The oxidative dehydrogenation (ODH) of propane to propene over a vanadium-based catalyst suffers from side reactions of further and complete oxidations of propene and other intermediates, which limit the yield of propene. These further oxidation reactions are also referred to as deep oxidation reactions of ODH. In thi…
Abstract Polyphenylsilsesquioxane (PPSQ) of ladder structure synthesized in laboratory was incorporated into polycarbonate (PC) by means of a twin‐screw extruder. Scanning electron microscopy (SEM) observations showed that spherical PPSQ particles of size 0.5−1.5 μm dispersed homogeneously in PC. The incorporation of…
A nonlinearity in the magnetoelectric coefficient, αMENonlin, of Metglas/Pb(Zr,Ti)O3 (PZT) and Metglas/Pb(Mg1/3,Nb2/3)O3-PbTiO3 (PMN-PT) laminate sensors has been observed. This nonlinearity was found to be dependent on the dc magnetic bias (Hdc) and frequency of the ac drive field (Hac). The maximum value of αMENonli…
For conventional metal/ceramic composites, we report an interesting negative permittivity behavior, which was usually observed in artificial metamaterials. The Fe/Al 2 O 3 composites with different Fe volume contents ranging from 10% to 40% were prepared through hot‐pressing sintering. The impedance and dielectric pro…
Application of phase change memory (PCM) has been limited by the high power required to reset the device (changing from crystalline to amorphous state by melting the phase change material). Utilizing the poor thermal and electrical conductivity of TaN we have designed a simple structure that thermally insulates the bo…
A system of hydrogen bonds in weakly hydrated PVA films containing up to ≤8.5 wt % water is investigated via IR spectroscopy. It is shown that water molecules bind to only part of the hydroxyl groups of the polymer that are available for hydration and form the first hydrating layer. In a completely dehydrated film, pr…
We investigated the dynamic competition between crystallization and phase separation in a dynamically asymmetric blend of poly(methyl methacrylate) (PMMA) and poly(ethylene oxide) (PEO). Because of a large difference in glass transition temperatures between these two components, the phase transition dynamics is slowed…
Understanding thermal energy transport in polycrystalline semiconductors is important for the efficiency of electronic devices and thermoelectric materials. In this paper, we study the reduction of the transport of thermal energy in polycrystalline semiconductors generated by the shortening of the phonon mean free pat…