Materials Literature
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Electron−phonon (e-ph) coupling dynamics in Au nanorods are studied with femtosecond transient depolarization experiments. Au nanorods exhibit strongly anisotropic e-ph coupling dynamics. It is considered to arise from different weights of pump energy assigned to two polarization directions because of the anisotropy o…
A deep understanding of the recombination dynamics of ZnO nanowires (NWs) is a natural step for a precise design of on-demand nanostructures based on this material system. In this work we investigate the influence of finite-size on the recombination dynamics of the neutral bound exciton around 3.365 eV for ZnO NWs wit…
This article features solvent-stabilized nanoparticles of photoconductive metal phthalocyanines (MPcs) with small particle sizes and narrow size distributions, which are tractable building blocks for photoelectric devices. The preparation and stabilization mechanism of 1,2-dichloroethane (DCE)-stabilized oxovanadium p…
In this paper, the research progress of compounding method using pristine clay and commercialised rubber latex to produce rubber/layered silicate nanocomposites, namely, latex compounding method, is summarised. The properties of a series of rubber/clay nanocomposites prepared by latex compounding method are systematic…
Based on the experiments of laser penetration brazing for Mg alloy and steel dissimilar materials, the microstructure and interface characteristics of butt joints were investigated by optical microscopy, scanning electron microscope with energy dispersive spectrometer and tensile testing. It was found that the strong…
The ordering of octahedral Al 3+ , Fe 3+ , and Mg 2+ cations in dioctahedral 2:1 phyllosilicates was studied theoretically. Quantum mechanical calculations based on density functional theory (DFT) were performed for optimizing different cation distributions along the octahedral sheet. Three systems of two species (Al…
Abstract Nanoindentation is a suitable tool for characterizing the local mechanical properties of shape memory alloys (SMA) and to study their pseudoelastic behavior. There is a special interest in indenting with different indenter tips (as not all tips are associated with strain states that predominantly induce the m…
The paper addresses the temperature and electric field dependence on the conductivity of the conductive armor and stress grading tapes on form-wound motor coils. The temperature and electric field dependence is measured in the laboratory, and the nonlinear dependency is used in transient FEM simulations of the potenti…
Dendrimers are global macromolecules with promising biomedical application. In order to investigate their blood compatibility, different generations of polyamidoamine (PAMAM) dendrimers terminated with different types of surface functional groups were incubated with red blood cells (RBC) for time course of haemolysis…
Research Article| February 01, 2010 Influences of alkalinity and pCO2 on CaCO3 nucleation from estimated Cretaceous composition seawater representative of "calcite seas" Janie Lee; Janie Lee * Department of Oceanography, Texas A&M University, College Station, Texas 77843, USA *E-mail: jlee@ocean.tamu.edu. Search for o…
The results have been considered of the research on the possibility of cubic boron nitride (cBN) and cubic carbon nitride (c-C 3 N 4 ) dynamic synthesis in hyperhigh-speed pulse jet of boron-carbon electric-discharge plasma, which flows into the space with a nitrogen medium. The source of the plasma is a high-current…
Ab initio study of a carbon nanotube-SiO2 interface reveals that the energetic preference for the nanotube to bind on particular sites on the O-terminated surface differs substantially from that on the Si-terminated surface. Besides, the chemical reactivity at the interface leads to electron-transfer from the nanotube…
Uniformly and vertically well-aligned ZnO nanorods were fabricated in-situ and ex-situ on ZnO films using a catalyst-free metal-organic chemical vapor process. Microstructural properties of the initial growth of ZnO nanorods on ZnO films with different surface roughnesses were investigated. We observed that the ZnO na…
I show that the growth of Trichodesmium, the primary diazotrophic phytoplankton in tropical and subtropical oceans, can be limited by Ni availability in both trace metal–defined culture media and natural seawater when the supply of Fe and P is sufficient. I further show that the increase of Ni concentrations elevates…
The charge states and effective spins of manganese ions in nonstoichiometric single crystals of Ca1 − x La y MnO3 − δ (x = 0, 0.05, 1) manganites have been determined from the exchange splitting of Mn 3s X-ray photoelectron spectra. The chemical composition of the manganite samples under investigation, including the c…
Manganese oxide supported on alumina was prepared for methanation reaction by doping the manganese oxide based catalyst with noble metals, namely ruthenium, Ru and palladium, and Pd, via an impregnation method. The potential catalyst was calcined at 400C, 700C and 1000C for 5 hours separately. An in-house-built mic…
The problems concerned with the processes of self-assembly of 3d-element aza-and thiazamacrocyclic complexes that happen in nanoreactors on the basis of metal hexacyanoferrate (II) gelatin-immobilized matrices under their contact with water solutions containing various (N, O, S)-donor atomic ligands and organic compou…
The dielectric properties of an epoxyamine composite modified by carbon nanostructures up to 2 wt % are studied at a frequency of 2.73 GHz, and its permittivity is shown to behave nonmonotonically (anomalously) as a function of the filler concentration. Possible causes of this anomalous behavior of the dielectric prop…
Multi-walled carbon nanotubes (MWCNT) were obtained by pyrolysis of camphor/ferrocene mixtures, at different concentrations of ferrocene, on quartz, polished silicon and carbon felt substrates. A detailed study by electron microscopy, Raman spectroscopy, X-ray diffraction and thermogravimetric analysis was carried out…
Single-crystalline alpha-MnO2 nanowires and beta-MnO2 microcrystals have been controllably synthesized by a common hydrothermal method based on the redox reaction between MnO4- and Cr3+. The products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy dispersive s…