Materials Literature
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Thermal conductivity of Si nanowire is calculated by applying Monte Carlo (MC) simulation of 110 nm, 37 nm, and 22 nm wire diameter. To study the thermal conductivity of both thick and thin nanowires different phonon group velocity is used in the simulation. This change in the phonon velocity for small diameter nanowi…
Abstract The antagonistic potential of Trichoderma spp. for biological control of wood-damaging fungi was investigated in the present paper. In vitro assays to investigate antifungal characteristics of Trichoderma spp. were conducted with various wood-damaging fungi. Exo-chitinase activity of the isolates was also mea…
Synthesis of various nanostructures on anodic metals such as Al and Ti attracts much attention in recent years. In this paper, we investigate in detail the nanostructure transition on anodic Ti and put forward a novel physical model to systematically explain the formation mechanism and discuss the relevant influential…
It is shown that a bi-layer mushroom structure formed by two coupled metallic grids may enable the resonant enhancement of the near field and superlensing at microwave and terahertz frequencies, to some extent analogous to the silver lens at UV. The charge density waves supported by the two grids can be strongly coupl…
The effects of twin spacing and temperature on the deformation behavior of nanotwinned Al under tensile loading are investigated using a molecular dynamic (MD) simulation method. The result shows that the yield strength of nanotwinned Al decreases with the increase of twin spacing, which is related to the repulsive fo…
Polycrystalline p-type Ag 0.9 Sb 1.1− x Mn x Te 2.05 ( x = 0.05, 0.10, and 0.20) compounds have been prepared by a combined process of melt-quenching and spark plasma sintering. The sample composition of Ag 0.9 Sb 1.1− x Mn x Te 2.05 has been specially designed in order to achieve the doping effect by replacing part o…
Layered double hydroxides (LDHs) can be incorporated in a variety of composites with different structures and properties. The choice of synthesis method is a very important factor in achieving LDHs with the desired structure and properties. A method involving separate nucleation and aging steps (SNAS), layer-by-layer…
This paper presents simulations of pollution and their effects on the electrical performance of cap-and-pin glass suspension insulators. The pollution is modeled by using a partially conductive epoxy resin with graphite powder. The effects of the pollution levels as well as their locations on the insulator surfaces ar…
A critical analysis of the available thermodynamic data for the Fe-V-Ti-C-N system has been performed, and a self-consistent thermodynamic description of this system has been proposed based on the CALPHAD (calculation of phase diagrams) method. Using the constructed thermodynamic description, we calculated the phase e…
Gadolinium based conversion coating, a new chemical protective coating for magnesium alloys, was prepared and its microstructure and corrosion resistance were investigated. The micromorphology, composition and elemental chemical states were observed by scanning electron microscope (SEM), X-ray photoelectron spectrosco…
The Bi1.5Zn1.0Nb1.5O7 (BZN)/Ba0.5Sr0.5TiO3 (BST) bilayered films and BST thin films were prepared via radio frequency (RF) magnetron sputtering, and the leakage current behaviors of the films were investigated. Lower leakage currents of BZN/BST bilayered films were achieved compared with that of BST thin films, especi…
The temperature dependence of the thermo-mechanical behavior of materials is of great importance in many engineering applications where the precise properties of materials over an extended temperature range are needed. The objective of this work is to present a density functional study to predict the temperature varia…
Space electronic systems employ enclosures to shield sensitive components from space radiation. The purpose of shielding is to attenuate the energy and the flux of ionizing radiation as they pass through the shield material, such that the energy per unit mass (or dose) absorbed in silicon is sufficiently below the max…
A new method is proposed for producing nanodisperse ceria-based solid solutions, involving microwave-hydrothermal (MW-HT) treatment of aqueous solutions containing salts of cerium and dopant elements and hexamethylenetetramine (HMTA). The specifics of HMTA hydrolysis under hydrothermal conditions are studied. X-ray an…
C65500 is a high strength engineering alloy that has excellent resistance to a wide range of corrosive environments. Combination of corrosion resistance, strength, and formability place it among the most widely used copper alloys. In the present study, a C65500 alloy was subjected to severe plastic deformation by hydr…
Ag-Cu nanoparticles were deposited on titania nanotube arrays via photodeposition method. The photocurrent density and voltage curves were measured under simulated sunlight and visible light irradiation conditions. Ag-Cu co-deposited photoelectrodes with a mole ratio of 1 to 4 exhibited the highest short-circuit photo…
An investigation of guided modes supported by an asymmetrical three layer metal-clad waveguide structure is presented. A left-handed material (LHM) guiding layer sandwiched between a metal substrate and a dielectric cladding is considered. The dispersion characteristics of TE and TM polarizations are analyzed. The eff…
To evaluate the potential abortifacient activity of the aqueous, alcohol, ethyl acetate and chloroform extracts of P. rubra pod in female albino rats 50, 100 and 200 mg/kg body weight doses of each extract were administered from day 11 to 15 of pregnancy and animals were allowed to go full-term. The phytochemical scre…
The effect of an external magnetic field with a strength up to 140 kOe on the phase transitions in manganese arsenide single crystals has been investigated. The existence of unstable magnetic and crystal structures at temperatures above the Curie temperature T C = 308 K has been established. The displacements of manga…
Electron emission microscopy is used to visualize plasmonic routing in gold nano-structures. We show that in single-crystalline gold structures reliable routing can be achieved with polarization switching. The routing is due to the polarization dependence of the photon-to-plasmon coupling, which controls the mode dist…