Materials Literature
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A generalized method that permits the parameters of an arbitrary empirical potential to be efficiently and accurately fitted to a database is presented. The method permits the values of a subset of the potential parameters to be considered as general functions of the internal coordinates that define the instantaneous…
Electrical transport characteristics of nitrogen-doped single-walled carbon nanotubes (N-SWCNTs), in which the nitrogen dopant is believed to form a pyridinelike bonding configuration, are studied with the field effect transistor operations. Contrary to the expectation that the nitrogen atoms may induce a n-type dopin…
Abstract The need to biofunctionalize polymer surfaces for targeted bio‐related applications continues to grow, and efforts designed to meet this need rely heavily on surface grafting or polymerization. In this study, we provide a viable alternative by demonstrating that the peptide segment of a polymer‐peptide conjug…
Homogeneous nanocomposite silica films uniformly doped with size-selected gold nanoparticles (AuNPs) have been prepared by a combined use of colloidal chemistry and the sol-gel process. For this purpose, stable thiol-functionalized AuNPs (DDT-AuNPs) were first synthesized by a two-phase aqueous/organic system and, sub…
Cyclic voltammetry was used to measure PbS nanocrystal (PbS-NC) energy levels. Accuracy of these measurements was justified by electron transfer experiments, with well known fullerene derivatives, which included photoluminescence quenching experiments and current density-voltage measurements of hybrid photovoltaic dev…
Abstract BACKGROUND: Some of the problems with electrospun zein fiber are that it has very low tenacities in the dry and wet states and that mats of the fiber become films when immersed in water. The fibers are therefore unusable for various applications despite their good biocompatibility and biodegradability. This r…
The electrical properties of single ZnO nanowires grown by vapor phase transport were investigated. While some samples were contacted by Ti/Au electrodes, another set of samples was investigated using a manipulator tip in a low energy electron point-source microscope. The deduced resistivities range from 1 to 10(3) Ωc…
Boron carbide nanowires with a fivefold twinned structure have been shown to have regular spaced microtwin lamellas localized in one of the crystalline segments. This defect structure is interpreted as incoherent structural relaxation to relieve the angular excess. A structural model, in terms of a disclination core s…
Abstract The compound Ba 4 Cr 2 US 9 , which crystallizes in space group P 321, consists of one‐dimensional $^{1}_{\infty}\rm [Cr_{2}US_{9}^{2-}]$ chains separated by Ba 2+ cations. Each one‐dimensional chain comprises face‐sharing CrS 6 octahedra and US 6 trigonal prisms in the sequence oct oct tp oct oct tp with the…
Abstract A novel optically‐active polymeric methacrylate, bearing the ( S )‐3‐hydroxy pyrrolidinyl group linked through the nitrogen atom to an azopyridine chromophore, was synthesized and investigated in combination with a polymeric methacrylate incorporating the photoisomerizable spiropyran chromophore in the side‐c…
We report a method for tuning a split-ring resonator (SRR) using infrared light. The SRR unit cells are commonly used in arrays to form a metamaterial that exhibits an effective negative permeability and are often used in negative-refractive-index materials. The region of negative permeability is generally limited to…
Abstract A highly selective assay method has been developed to detect mercury (II) (Hg 2+ ) ions using cationic conjugated polymer (CCP). The transduction mechanism is based on a Hg 2+ promoted reaction. In the absence of Hg 2+ ions, the CCP can form the complex with an anionic 1,3‐dithiole‐2‐thione derivative through…
In this paper, the physico-chemical and mechanical properties of Agave americana L. fibre are studied to explore the possibilities of using this fibre in textile industry. Three different processings for extracting fibres from the leaf of Agave americana L. plant were investigated: (i) raw fibres manually extracted, (…
In one space dimension, a non-local elastic model is based on a single integral law, giving the stress when the strain is known at all spatial points. In this study, we first derive a higher-order Boussinesq equation using locally non-linear theory of 1D non-local elasticity and then we are able to show that under cer…
Co nanowires with a diameter of 10 nm and a length up to 1000 nm were synthesized by the chemical reduction of cobalt acetate in propanediol using Ru as the heterogeneous agent and stearic acid as the surfactant. The morphology of the Co nanomaterials depended strongly on the concentrations of stearic acid and sodium…
Abstract Two heterobimetallic Zn‐Nd phenylene‐bridged Schiff‐base ligands complexes [ZnNd L 1 (Py)(NO 3 ) 3 ] ( 1 ) and [Zn L 2 Nd(Py)(NO 3 ) 3 ]·MeCN ( 2 ) (Py = pyridine, H 2 L 1 = N,N′ ‐bis‐ (3‐methoxy‐salicylidene)phenylene‐1,2‐diamine, H 2 L 2 = N,N′ ‐bis‐5‐bromo‐3‐methoxy‐salicylidene)phenylene‐1,2‐diamine) were…
Carbide slag was used as the calcareous materials for the first time to prepare xonotlite via dynamic hydrothermal synthesis. The effects of influential factors including different calcination temperatures, pretreatment methods of the carbide slag and process parameters of hydrothermal synthesis on the microstructure…
Electrophoretic deposition was used to deposit CdSe nanocrystals on TiO2 for use in photovoltaic cells. The deposition current underwent a simple exponential decay, consistent with the current being comprised of charge transfer from charged nanocrystals to the electrodes. Rutherford backscattering spectroscopy showed…
The effect of additional carrier pocket (ACP) on the thermoelectric property is investigated based on the multiband model, indicating that an ACP indeed enhances the power factor, and hence the thermoelectric figure of merit. The established model can be used to well explain the experimental observations in skutterudi…
Abstract The efficiency of melamine cyanurate and a clay filler for improving the flame retardancy and other physical properties of polyamide 6 was examined. Partially intercalated‐exfoliated morphologies were obtained. Nanocomposites suffered from polymer degradation during compounding, while the molecular weight was…