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。
A novel approach of maximum power point tracking (MPPT) control method for thermoelectric generator (TEG) is reported in this paper. The maximum power point tracking is achieved by using impedance matching principle. Unlike the existing MPPT methods, the proposed implementation does not require any voltage and current…
Using the tellurium(IV) complex compounds as an example, we study the interrelation between the geometric structure and spectral luminescence properties. We find that, in the series of compounds of Te(IV), which are characterized by the island octahedral coordination of Te(IV) ions, the luminescence intensity depends…
Compared with traditional in-vitro cell culture materials, three-dimensional nanofibrous scaffolds provide a superior environment for promoting cell functions. Since nanofibrous scaffolds have nanometer pore sizes, cells are unable to penetrate on their own, so must be incorporated into the scaffold during fabrication…
A step-by-step consideration of charge transfer in the molecule-single-layer graphene-SiC substrate system is presented. At the first step, a simple model of the density of states of a single graphene monolayer adsorbed on silicon carbide (the graphene-SiC system) is suggested, which allows the calculation of the corr…
The potential of single-walled carbon nanotubes as nanosensors in detection of noble gases via a vibration analysis is investigated using molecular dynamics simulations. An index based on frequency shifts of the nanotubes in an environment of noble gas atoms is defined and examined to measure the sensitivity of the se…
In a binary mixture system of ferroelectric and antiferroelectric liquid crystals whose major component shows an unusual reversed phase sequence of , a new phase with ferrielectric order of five layers has been discovered by the electric field-induced birefringence (EFIB) measurements. The EFIB was measured using a ph…
The focus of this work is the modeling and simulation of the initial “stable jet” phase seen during the electrospinning process. The basis of the modeling is the bead-spring approach first proposed by Reneker et al. [J. Appl. Phys. 87, p. 4531 (2000)], who used this methodology to predominantly simulate the bending in…
In this paper, we study the relationship between nanoparticles’ structure/composition and the chemical nature of the molecules to be identified in surface enhanced Raman scattering (SERS) spectroscopy. Three types of nanoparticles (NPs) were synthesized, including Ag, Au, and silver coated by gold (Ag@Au), in order to…
A microstructural model of a ceramic cutting plate is developed. It permits the derivation of a calculation scheme for a mathematical model that includes the density, the elastic modulus, the thermal conductivity, the specific heat, the linear expansion coefficient, and Poisson’s ratio.
We review the composition dependence of the structural and magnetic properties of the Co-doped Ni–Mn–Ga Ferromagnetic Shape Memory Alloy around the Mn-rich composition Ni50Mn30Ga20. The presence of Co affects the critical temperatures and alters the exchange interactions of martensite and austenite to different extent…
The corrosion test was performed for ferritic/martensitic steel HCM12A with and without Fe-Al alloy coating in LBE at temperatures of 550 and 650°C under loading for an immersion time up to 500 h. After the corrosion test at 550°C for 500 h, both of the uncoated and Fe-Al-coated HCM12A showed a good corrosion resistan…
A simple model is formulated and used to derive analytical expressions for the density of states in the epitaxial layer of graphene on a metal substrate and the occupation numbers for carbon atoms. Estimations of the charge transfer in this system are obtained for several metal substrates.
Lead-free (1- y )(Bi 1/2 Na 1/2 TiO 3 – x Bi 1/2 K 1/2 TiO 3 )– y K 0.5 Na 0.5 NbO 3 [(1- y )(BNT– x BKT)– y KNN] (0.1≤ x ≤0.6 and 0≤ y ≤0.05) ceramics were prepared with compositions both at as well as off the morphotropic phase boundary (MPB) of x =0.2 and y =0. It was found that KNN addition destabilizes a ferroele…
The formation of a short-range order in soft magnetic Fe-Si alloys depending on the annealing temperature has been investigated theoretically and experimentally. The B2-type short-range order has been observed in samples quenched from temperatures T > T C (where T C is the Curie temperature) with the content c Si clos…
The temperature coefficient of resistance (TCR) in V 1- x W x O 2 (VWO) with various W-doping levels and thicknesses were investigated on Al 2 O 3 (0001) single crystal substrates. The VWO thin films with an appropriate doping level ( x =0.015) showed high TCR over 10%/K just at room temperature (300 K), which was lar…
The inhibiting action of (+)-catechin hydrate on the corrosion of mild steel in hydrochloric acid has been studied. The results from weight loss, Tafel polarization and electrochemical impedance measurements consistently identify (+)-catechin hydrates as a good inhibitor. Polarization curves indicate that (+)-catechin…
In this paper, 1-3 composites based on Pb(In(1∕2)Nb(1∕2))-Pb(Mg(1∕3)Nb(2∕3))-PbTiO(3) (PIMNT) single crystal and high-temperature epoxy were fabricated with various volume fractions of PIMNT single crystal ranging from 0.4 to 0.9. The electrical properties were studied as functions of PIMNT volume fraction and tempera…
The surface treatment with boiling hydrogen peroxide (H2O2) solution on the surface of ZnO nano-columnar film was investigated. Field emission-SEM and TEM analysis revealed that amorphous ZnO2 layer covers the ZnO nano-column surface through the H2O2 treatment at 100°C for 1 min. X-ray photoemission spectroscopy (XPS)…
Measured absolute optical absorption cross sections of 2–6 nm Ge nanocrystals embedded in SiO2 in the near-infrared–ultraviolet spectral range are reported. Thin layers of Ge sandwiched between SiO2 layers were prepared in a multilayered configuration, which upon heat treatment at 800 °C led to multilayers of Ge nanoc…
A comprehensive review of recent literature on high strength, fine grained steels has been conducted. While relevant technologies in alloy design, processing and heat treating are included in the present review, the emphasis has been on high carbon steel wire processing technology that can be achieved with ‘convention…