Materials Literature
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The Lees–Edwards periodic boundary condition has been a workhorse for simulating shear flows in molecular dynamics (MD). It has also been used in dissipative particle dynamics (DPD) to calculate the rheology of complex suspensions. However, owing to the dependence of inter-particle forces on the relative velocity of t…
Nitrogen-doped ZnO thin films with different nitrogen concentrations were fabricated by plasma-assisted molecular beam epitaxy. Hall effect measurements show p-type conduction for samples with low doping concentration. In highly doped ZnO, the p-type conduction converted to high resistance or unstable p-type behavior.…
FeNi nanotubes were successfully prepared in pores of anodic aluminium oxide templates by the wetting template method. By varying the deposition conditions and the parameters of the templates, the lengths and the outer as well as the inner diameters of the tubes can be tailored. The FeNi nanotubes and their arrays wer…
Structure and Internal Stress of Tin-Doped Indium Oxide and Indium–Zinc Oxide Films Deposited by DC Magnetron Sputtering, Nishimura, Eriko, Sasabayashi, Tomoko, Ito, Norihiro, Sato, Yasushi, Utsumi, Kentaro, Yano, Koki, Kaijo, Akira, Inoue, Kazuyoshi, Shigesato, Yuzo
Abstract Summary: The polymer growth and the microstructure of the final polymer are greatly affected by mass transfer, especially in the early stages of polymerization. In the present work, the catalytic system ( n BuCp) 2 ZrCl 2 /MAO immobilized over SiO 2 ‐Al 2 O 3 has been tested in ethylene‐1‐hexene copolymerizat…
The electrical conductivity of the semiconducting phase of vanadium dioxide single crystals is studied over a wide range of temperatures. It is shown that the electrical conductivity varies with temperature as log σ ∼ T in the range 340–170 K and as log σ ∼ 1/ T at temperatures below 120 K. The experimental results ar…
In this paper, (10, 0) zigzag nanotubes and (6, 6) armchair nanotubes are considered to investigate the effects of randomly distributed vacancy defects on mechanical behaviors of single-walled carbon nanotubes. A spatial Poisson point process is employed to randomly locate vacancy defects on nanotubes. Atomistic simul…
Extremely thin extend layers of graphene are readily grown epitaxially on single crystal silicon carbide surfaces. This material can be patterned using microelectronics lithography methods to produce all-graphene interconnected device structures. The current status of this new field of electronics is presented includi…
Based on artificial icing test results, it was found that the DC flashover voltage of iced insulator strings was non-linear with different string lengths. An experimental formula of flashover voltage on iced insulators of different string lengths is introduced in this paper. Icing tests were carried out on different k…
The dependence of the strain-rate sensitivity coefficient of flow stresses S = dlnσ/dln $$\dot \varepsilon $$ on temperature, strain rate, and grain size in nanocrystalline (NC) metals is analyzed quantitatively in terms of the dislocation-kinetics approach taking into account the properties of grain boundaries as sou…
We have synthesized SrFe1 − x M x O3 − z (M = Mo, W; 0 < x ≤ 0.5) solid solutions. Our results indicate that the introduction of stable MO6 octahedra narrows the range of oxygen stoichiometries of the material and suppresses the perovskite-brownmillerite structural phase transition at low temperatures and oxygen parti…
The impulse heat-sealing properties of wheat gluten films were investigated. Films containing 30 wt% glycerol were compression molded at 100-130 degrees C and then sealed in a lap-shear or peel-tes ...
Many efforts in experimental and theory are dedicated to study the puzzling problem of glass transition. With the involvement of molecular modeling, a fresh look at this intricate phenomenon was taken. Nevertheless, the difficulty to accurately probe all the domains of times necessary to describe this process still re…
We have fabricated a phase change memory using doped In-Ge-Te to improve the data retention required for industrial and automotive use. This chalcogenide features higher thermal stability as well as denser texture and improved adhesion. The memory cell using doped In-Ge-Te provided a larger read margin and better data…
In this article, we report the first examples of mesomorphic linear trimers consisting of bent-core and rodlike anisotropic segments, primarily conceived to explore the possibility of stabilizing optically biaxial mesophase(s), and we briefly review the work carried out in the area of dimers composed of bent-core meso…
ZnO piezoelectric thin films were prepared on crystal substrate Si(111) by sol-gel technology, then characterized by scanning electron microscopy, X-ray diffraction and atomic force microscopy (AFM). The ZnO films characterized by X-ray diffraction are highly oriented in (002) direction with the growing of the film th…
Herein we demonstrate that Eu2+ substitution of SrTi0.8Nb0.2O3 is effective in reducing the thermal conductivity, with no reduction in the thermoelectric power factor (S2σ; S, Seebeck coefficient; σ, electrical conductivity). We prepared cubic (Sr,Eu)Ti0.8Nb0.2O3 crystals having the same lattice parameter (a=0.395 nm)…
In this work, a photochromic wool fabric has been prepared by applying a photochromic-dye hybrid silica sol-gel onto the surface of fabric. The photochromic fabric was found to have a very quick optical response. Two types of silica were used as the matrix material, and the type of silica had a small effect only on th…
Friction, lubrication, adhesion, and wear are prevalent physical phenomena in everyday life and in many key technologies. This book incorporates a bottom-up approach to friction, lubrication, and wear. This is done by focusing on how these tribological phenomena occur on the small scale — the atomic to the micrometer…
A novel zero-dimensional (0D) octacyanotungstate(V)-manganese(II) bimetallic assembly, {[MnII(bipy)2]2(ox)}.{[MnII(bipy)2W(CN)8]2}.4H2O (1) (bipy = 2,2'-bipyridine, ox = C2O42-), was synthesized in methanol solution containing oxalic acid. X-ray analysis shows 1 is crystallized in monoclinic crystal system with C2/c s…