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。
The effect of electrodeposition frequency and waveform on the magnetic properties and microstructures of Co nanowires were investigated. The results show that depending on the value of the electrodeposition frequency appreciable changes in the crystalline anisotropy can be induced. These changes are attributed to modi…
Colloidal dot-, rod-, and tetrapod-shaped CdTe nanocrystals (NCs) are obtained by varying the precursor concentration and the ligands. Both the dot- and rod-shaped NCs are of zinc-blende phase, whereas the tetrapod-shaped NCs are a mixture of zinc-blende and wurtzite structures. It is proposed that the concentration o…
The motion of electrons in c-C 4 F 8 and N 2 gas mixtures for a pulsed Townsend discharge is simulated by the Monte Carlo method. The effective ionization coefficient, , over the E / N range from 160 to 480 Td is calculated by employing a set of cross sections available in the literature. From the variation curve of w…
We investigate the hole trapping process of a neutral oxygen vacancy in amorphous silicon dioxide $(a\text{\ensuremath{-}}\mathrm{Si}{\mathrm{O}}_{2})$ using cluster calculations based on the density functional theory (DFT) method. We show that trapping a hole at a neutral oxygen vacancy leads to the formation of seve…
In this letter, the authors report the photoluminescence studies of Eu3+ doped Y2O3 nanorods, which have been synthesized by rapid microwave hydrothermal route within 6min. The nanostructured Eu3+ doped Y2O3 is characterized by x-ray diffraction, transmission electron microscopy, and photoluminescence. The emission sp…
Abstract Summary: Phenolic formaldehyde (PF) resins are attractive due to their excellent performances such as high temperature resistance, thermal abrasion, and high yield of carbon conversion. In this communication, PF resin‐based composite hollow spheres were fabricated by in situ favorable absorption and catalytic…
Abstract The molecular structure of poly(amido amine) dendrimers is investigated with molecular dynamics simulations using the Amber 7 modeling package. A method for defining residues for complex molecules is developed, and it enables the study of the effects of protonation of the primary and tertiary amines. The effe…
We have demonstrated a guided-mode resonance filter (GMRF) whose properties are tunable with laser illumination through the incorporation of a nonlinear dye. Laser illumination causes a change in the refractive index of the dye-doped portion of the structure, leading to controlled tuning of the GMRF reflectance spectr…
The practical advantages of employing non-contact radio frequency (RF) methods for detecting partial discharges (PDs) in high voltage equipment have led to significant effort being focused on the diagnosis of electrical plants using RF techniques. This has particularly been the case for gas insulated substations, whic…
The authors report on the fabrication and characterization of a guided-mode resonance filter whose spectral reflectance features vary in a linear fashion as a function of position on the filter. This device was fabricated using nanoreplica molding in conjunction with a linearly graded TiO2 thin film deposition. The ma…
A hot filament chemical vapor deposition (HFCVD) method has been used to investigate the effects of atomic hydrogen and active carbon species on the growth of 1mm vertically aligned single-walled carbon nanotubes (VA-SWNTs). Isotopic shifts of the tangential phonon mode of SWNTs indicate that SWNT growth occurs primar…
Experimental evidence for the anisotropy compensation between Dy3+ and Pr3+ ions has been observed directly by performing x-ray diffraction on magnetic-field aligned powders and by evaluating the spin-reorientation temperature and the magnetostriction of Tb0.2Dy0.8−xPrx(Fe0.9B0.1)1.93 alloys. The spin-reorientation te…
Zinc oxide thin films were grown on sapphire substrates by metal organic chemical vapor deposition technique. Single crystal films with flat and smooth surfaces were reproducibly obtained, with application of sample bias and O2 inductively coupled plasma (ICP). At the growth condition of 650°C, 400W ICP power, −94V bi…
Lanthanum hexaboride films have been deposited on a tungsten tip by pulsed laser deposition technique. The field emission studies have been performed in the conventional field emission geometry. The Fowler-Nordheim plot obtained from the current-voltage characteristic is found to be linear in accordance with the quant…
Various fundamental building blocks (FBBs) are observed in the crystallographic structures of oxoborates available in the Inorganic Crystal Structure Database, Version 1.3.3 (2004); the occurrence of borate groups with low complexity is dominant. Bond-valence parameters d(0) of B-O bonds in 758 oxoborates with various…
Experimental I-V-Tc-ΔT data of thin-film superlattice thermoelectric modules is used to determine the internal ΔT, cross-plane Seebeck coefficient, effective thermal interface resistance, device ZT, and Qmax. We demonstrate 55K of external cooling at 300K (Tcmin=244.8K), with an estimated heat pumping capacity of 128W…
Vertically aligned tin-doped indium oxide (ITO) single-crystalline nanowire arrays are epitaxially grown on ITO/yttrium stabilized zirconia substrates by vapor transport method. Vacuum electron field emission properties of the aligned ITO nanowires are investigated. The turn-on electrical field at a current density of…
Abstract Summary: Migration of clay to the surface of nylon 6‐organically modified clay is investigated. The effect of annealing time and temperature on the migration of the clay is reported. Attenuated total reflectance FT‐IR spectrometry, X‐ray diffraction, and high‐resolution electronic microscopy are used in this…
The authors have found that the required dc magnetic bias of magnetoelectric (ME) laminates can be significantly altered, by incorporating additional high-permeability μ-metal layers. Investigations have focused on Tb1−xDyxFe2−y∕Pb(Zr1−xTix)O3∕μ-metal laminates. The authors’ results show that laminated μ-metal layers…
A nanotwin diffraction theory is developed. It predicts an adaptive diffraction phenomenon, where the Bragg reflection peaks are determined by coherent superposition of scattered waves from individual twin-related nanocrystals and adaptively shift along the twin peak splitting vectors in response to a change in the tw…