Materials Literature
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We report fatigue performance of sandwich composites with nanophased core under shear load. Nanophased core was made from polyurethane foam dispersed with carbon nanofiber (CNF). CNFs were dispersed into part‐A of liquid polyurethane through a sonication process and the loading of nanoparticles was 1.0 wt%. After disp…
The Schottky defects at both the flat MgO(001) surface and the monatomic-step edge have been investigated by equilibrium molecular dynamics simulations. The formation enthalpy as a function of the distance between the Mg and O vacancies that form a Schottky defect have been calculated and discussed. We conclude that a…
Two single-cell-gap transflective display devices with vertically aligned positive dielectric anisotropy liquid crystal driven by horizontal electric fields are proposed. In these displays, patterned reflectors are located at transmittance-inefficient regions to serve as reflective mode. These displays exhibit fast re…
A low cost and environmentally benign process for tetrabutyl titanate-controlled ring-opening polymerization of epsilon-caprolactone at ambient temperature of 10-40 degrees C is introduced affording poly(epsilon-caprolactone) with pre-designed molecular weights and narrow molecular weight distribution.
The synthesis of novel periodic mesoporous organosilica (PMO) materials incorporating a mixture of functional monomers (cis- and trans-stilbene-based) and structural monomers has been accomplished. EDX analysis of these materials in combination with HAADF imaging of OsO(4)-stained samples reveals a homogeneous distrib…
ZnO (8-10 nm), gold (10-50 nm), and platinum (2-5 nm) nanoparticles were deposited on monoliths of regularly arranged three-dimensional (3D) carbon nanotubes of 40 nm diameter and length up to 30 microm. The single-source precursor complex di-aqua-bis[2-(methoxyimino)propanato](2)Zn(ii) in dimethylformamide was used f…
The Kiev?s research reactor WWR-M has been in operation for more than 50 years and its further operation is planned for no less than 8-10 years. The acting nuclear legislation of Ukraine demands from the operator to perform the decommissioning planning during the reactor operation stage as early as possible. Recently,…
The effect of mixing ratio, firing temperature and matrix glass composition on afterglow luminance property of SrAl2O4:Eu2+,Dy3+-glass composites were investigated. As a result, the brightness showed a maximum at 35 mass % of the mixing ratio of the phosphor for the glass and 780°C of the firing temperature. And it wa…
This work discusses the increased capabilities of a three-dimensional analysis tool for shape memory alloy engineering components. As the number and complexity of proposed SMA applications increases, engineers and designers must seek out or develop more capable predictive methods. Three-dimensional models implemented…
The thermal atomic vibration spectrum of lead nanostructured in porous glass with an average pore size of 7 nm and the thermal vibration spectrum of conventional bulk lead (taken for comparison) are measured using inelastic neutron scattering. The density of states in the phonon spectrum of lead nanoparticles is found…
The Holstein-Hubbard model serves as a useful framework to investigate this interplay between the phonon-induced electron-electron attractive interaction and the direct Coulomb repulsion and can afford interesting phase diagrams due to competition among charge-density wave (CDW), spin-density wave (SDW), and supercond…
Modeling is an important tool to better understand crystal growth. This assertion is discussed via examples of classical models that have proven to be enlightening. The discussion continues with a brief primer on the mathematical governing equations of continuum and interfacial phenomena important in crystal growth pr…
Al-bearing steels showed high corrosion resistance into coastal environments. The layer of the rusts containing Al was formed on the surface of those alloys after long periods of exposure to the coastal environments, and it was suggested that the Al plays an important role in the corrosion resistivity. In this work, w…
Based on the characters of expanding and layer adsorbing of vermiculite，industrial vermiculite samples from Weili Mine of Xinjiang Province were expanded by both chemical and microwave chemical methods. The influences to the exfoliation ratio of different parameters such as concentration of hydrogen peroxide, power of…
The paramagnetic aryl-alkynyl complexes [Mo(C≡CAr)(dppe)(η-C(7)H(7))](+) (dppe = Ph(2)PCH(2)CH(2)PPh(2); Ar = C(6)H(5), [1](+); C(6)D(5), [2](+); C(6)H(4)-4-F, [3](+); C(6)H(4)-4-Me, [5](+)) and [Mo(C≡CBu(t))(dppe)(η-C(7)H(7))](+) [4](+), have been investigated in a combined EPR and ENDOR study. Direct experimental ev…
A simple method for the preparation of nanoscale fibers and tubes by the cationic copolymerization of divinylbenzene (DVB) and styrene (ST) is described.
Semiconductive dielectric SrTiO3 thin films are promising candidates for the in situ monitoring of trace levels of oxygen in semiconductor manufacturing processes. Highly sensitive oxygen sensors were prepared by atomic-layer deposition (ALD) or pulsed-laser deposition (PLD) of SrTiO3; however, there was a problem wit…
This paper focuses on the micromechanical study of the tensile property of Polymer-Clay Nanocomposites (PCN). Polypropylene (PP) filled with nanoclay is chosen as the PCN. Measurements of optical dispersion parameters (as discussed by Basu et al., namely, exfoliation number (ξn), degree of dispersions (χ) and agglomer…
In this study we report on the growth behavior of zinc oxide in the presence of different concentrations of silicon. We performed reactions in a continuous tubular reactor in aqueous and ethanolic-aqueous media at different reaction temperatures and for different residence times. It was found that the zinc oxide parti…
The use of natural fiber as polymeric matrix reinforcement has attracted interest, as fibers are renewable, of low cost, biodegradable and possesses non-toxic properties. In the present paper, Brazil nuts (Bertholletia excelsa) shell fiber (10% w/w) were mixed with gelatin (25% w/w), glycerin as plasticizer and acryla…