Materials Literature
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In this paper, molecular dynamics simulations (MDS) are performed on single-walled carbon nanotubes (SWCNTs) in order to study the effects of chirality on their buckling behavior under axial compression. In the MDS, the Tersoff-Brenner potential is used to describe the interaction of carbon atoms in the SWCNTs. The se…
Precipitation of calcium carbonate is widespread in microbial communities (biofilms, microbial mats, etc.) and plays an important role in the nucleation and formation of stromatolites, onkolites and oolites. Here we report carbonate precipitation under laboratory conditions in defined spherical microbial communities.…
Silver coated SiN and SiO(2) tips have been fabricated for use with a bottom-illumination tip-enhanced Raman spectroscopy (TERS) setup with a 488 nm laser excitation. SiN tips with 50-60 nm of deposited Ag give the best TERS enhancements for brilliant cresyl blue test analyte spin-coated on a glass slide. Ag nanoparti…
We present a space-domain integral-equation method for the analysis of periodic structures formed by three-dimensional (3-D) metallic objects arranged in a general skewed two-dimensional lattice. The computation of the space-domain Green's function is accelerated using the Ewald transformation. The method is validated…
OBJECTIVE: To examine the safety and efficacy of a chitosan dietary supplement on body composition under free-living conditions. DESIGN: In a randomized, double-blinded, placebo-controlled dietary intervention protocol, subjects were assigned to a treatment group (TRT), a placebo group (PLA) and a control group (CTL).…
By using an interfacial coprecipitation method, hydrophilic magnetite nanoparticles capped with amine groups are facilely fabricated in this paper. In the approach, di- n -propylamine and a water/cyclohexane mixture act as the alkali and medium, respectively, so that the coprecipitate reaction is confined only to the…
A method for the detailed analysis of the possible crystalline structures and preferred orientations of crystals that develop during stretching metallocene-made isotactic polypropylene (iPP) samples is presented. The analysis is illustrated in the case of various iPP samples characterized by a different distribution o…
α-Ni(OH) 2 and Ni−Al layer double hydroxides (LDHs) precipitated by urea were investigated with FTIR and XPS. Possible modes of cyanate (CNO - ) coordination during the nucleation and growth of precipitates is discussed. In the early stages, cyanate ion in α-Ni(OH) 2 is found mainly to be N-bonded to Ni 2+ ions in the…
We have successfully prepared silicon quantum dots/amorphous silicon carbide multilayers by the thermal annealing of stoichiometric hydrogenated amorphous silicon carbide (a-SiC:H)/silicon-rich hydrogenated amorphous silicon carbide (a-Si 1- x C x ) multilayers. Raman scattering spectroscopy and transmission electron…
In this companion article, we present within the finite element context the numerical algorithms for the integration of the thermodynamically consistent formulation of geometrically nonlinear gradient-enhanced viscoinelasticity derived in the first part of the article. The proposed unified integration algorithms are e…
Abstract A comprehensive summary of surface electronic properties of undoped hydrogen terminated diamond covered with adsorbates or in electrolyte solutions is given. The formation of a conductive layer at the surface is characterized using Hall effect, conductivity, contact potential difference (CPM), scanning electr…
An integral formulation to model, in the frequency domain, the electromagnetic response of three-dimensional (3-D) structures formed by metallic carbon nanotubes and conductors, within the framework of the classical electrodynamics, is described. The conduction electrons of the metallic nanotube are modeled as an infi…
Biomolecules are innately flexible, and undergo large-amplitude motions that affect the surrounding solvation shell. Dynamical X-ray scattering provides direct insight into global shape changes that the biomolecule undergoes during folding (1 nm and up length scale). THz spectroscopy directly probes solvation and coll…
Abstract This paper presents a review of state‐of‐the‐art reports of homoepitaxial diamond growth. Crystal growth and characterization methods that are commonly used for homoepitaxial diamond studies are first described briefly. Then, effects of each process parameter on the growth mode of homoepitaxial diamond are di…
Much progress has been made in elucidating the complex structures of silicate glasses and melts. X-ray and neutron scattering, spectroscopy, and theoretical calculations now provide a reasonable clear picture of many aspects of the short-range structure of glasses (which approximates the melt structure at the glass tr…
Abstract Results of DTA‐TG investigation and chemical analysis of electro‐exploded aluminum nanopowders, passivated and/or coated with the non‐inert reagents: nitrocellulose (NC), oleic acid (C 17 H 33 COOH) and stearic acid (C 17 H 35 COOH), which were suspended in kerosene and ethanol, amorphous boron, nickel, fluor…
Cellular and porous polymers with internal bipolar space charge can exhibit large piezoelectric thickness coefficients and have therefore led to significant advances in the understanding and the application of piezoelectricity in polymer electrets. As possible alternatives to these cellular ferroelectrets, other poten…
Abstract The latest developments in periodic mesoporous organosilicas (PMO) have been compiled. The discovery of mesoporous hybrid organosilicas with molecular scale periodicity resulting from alternating hydrophilic and hydrophobic layers, and a cost effective solution showing the use of allyl derivatives of the bis-…
During dynamic loading processes, large inelastic deformation associated with high strain rates leads, for a broad class of ductile metals, to degradation and failure by strain localization. However, as soon as material failure dominates a deformation process, the material increasingly displays strain softening and th…
In this study, the effect of hybridization on mechanical properties of untreated (as received) woven jute and glass fabric-reinforced isothalic polyester composites has been evaluated experimentally. Hybrid laminates are fabricated using hand lay-up technique. The specimen preparation and testing are carried out as pe…