Materials Literature
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Abstract Summary: Self‐consistent field (SCF) theory is developed for a polymer brush immersed into a multi‐component solvent. Thermodynamics of the plane inhomogeneous brush is mainly determined by thermodynamics of the basic system, i.e., a homogeneous solution of a polymer dissolved in a multi‐component solvent tha…
Shape memory alloys (SMAs) are used in a wide variety of applications including medical stents, couplings, actuators, jointless monolithic structures for actuation and manipulation, etc. Due to the SMA’s poor machinability it is advantageous to use rapid prototyping (RP) techniques for the manufacturing of SMA structu…
Abstract Summary: In the present study, electrospinning of hyaluronic acid (HA) and hyaluronic acid/gelatin (HA‐GE) blends in N , N ‐dimethylformamide (DMF)/water‐mixed solvents have been investigated. When the volume ratio of DMF to water was in the range of 1.5–0.5, HA solutions could be electrospun into fibrous mem…
Given the effectiveness of semiconductor devices for classical computation one is naturally led to consider semiconductor systems for solid state quantum information processing. Semiconductors are particularly suitable where local control of electric fields and charge transport are required. Conventional semiconductor…
We theoretically demonstrate that a dipole layer on the electrode can modulate the transmission properties of nanoscale devices by influencing the contact properties, through first principles simulations on carbon nanotube based field effect transistors. The dipole layer is realized by potassium adsorption on Au elect…
The performance of a wide variety of ultra-sensitive devices employing nanoelectromechanical resonators is determined by their mechanical quality factor, yet energy dissipation in these systems remains poorly understood. Here we develop a comprehensive theory of friction in high frequency resonators caused by the radi…
Molecular Dynamics (MD) computer simulations are utilized to better understand the escape of neon from small (N=5) endohedral Ne@C60 clusters. Multiple runs at various temperatures are used to increase the reliability of our statistics. The cluster holds together until somewhere between T = 1150K and T = 1200K, where…
We studied composites of single walled carbon nanotubes and poly(3hexylthiophene) by optical absorption, X-ray diffraction and transmission electron and scanning tunneling microscopy. Dispersing single walled carbon nanotubes in poly(3hexylthiophene) leads to sharpening of vibronic structure and enhanced optical absor…
Abstract Polystyrene (PS)/organoclay nanocomposites were prepared by the in situ polymerization of styrene in the presence of organoclay with macroazoinitiator (MAI), composed of repeated sequences of poly(dimethylsiloxane) (PDMS) and azo groups. The X‐ray diffraction patterns and the morphology observed with a transm…
The optical gain and the luminescence of a ZnO quantum well with MgZnO barriers is studied theoretically. We calculated the non-Markovian optical gain and the luminescence for the strained-layer wurtzite quantum well taking into account the excitonic effects. It is predicted that both optical gain and luminescence are…
Abstract Telechelic poly(1,3‐dioxolane) (PDXL) bis‐macromonomers bearing methyl methacrylate end groups were prepared by cationic ring‐opening polymerization of 1,3‐dioxolane (DXL), in the presence of methacrylic anhydride, catalyzed by Maghnite‐H + (Mag‐H + ), in bulk and in solution. Maghnite is a montmorillonite sh…
The effect of a buffer layer and/or interface region on the photovoltaic properties of Al-doped ZnO (AZO)/Cu<sub>2</sub>O heterojunction solar cells was investigated. The I-V characteristics and photovoltaic properties in AZO/ZnO-In<sub>2</sub>O<sub>3</sub>/Cu<sub>2</sub>O devices were considerably improved by increas…
The ternary germanide ${\mathrm{La}}_{3}{\mathrm{Pd}}_{4}{\mathrm{Ge}}_{4}$ has been prepared by arc melting. This compound takes a body-centered lattice with an orthorhombic unit cell with the lattice parameters of $a=4.2200(3)\phantom{\rule{0.3em}{0ex}}\mathrm{\AA{}},\phantom{\rule{0.3em}{0ex}}b=4.3850(3)\phantom{\r…
Abstract The moisture‐induced corrosion of an evaporated germanium film has been observed and studied using quantitative X‐ray photoelectron spectromicroscopy. The application of recently reported software for the processing of multi‐spectral image datasets (particularly noise reduction) to this real‐world problem rev…
Abstract Low‐density polyethylene (LDPE) was treated with a low‐temperature cascade arc plasma torch (LTCAT) of argon with or without adding a reactive gas of oxygen or water vapor. The static sessile droplet method and the dynamic Wilhelmy balance method were employed to perform surface contact angle measurement in o…
Abstract ISO 18118 provides guidance on the measurement and use of experimentally determined relative sensitivity factors for the quantitative analysis of homogeneous materials by Auger electron spectroscopy (AES) and X‐ray photoelectron spectroscopy (XPS). This article provides a brief summary of this International S…
Abstract We report the development of a new analytical expression for the electron stopping power (SP) for electron energies between 200 eV and 30 keV. This expression describes the product of the SP and the inelastic mean free path (IMFP), and is a simple function of atomic number and electron energy. Parameters in t…
In this letter, we propose an automatic classification scheme of discharge sources on the basis of Fourier spectrum for received electromagnetic (EM) pulses. Confirming the reproducibility of EM pulses from each source validates this scheme. The recognition rate for six discharge sources is 80% or better. The feature…
In the present paper, the tracking phenomena of silicone rubber material has been studied under ac voltages, with ammonium chloride as a contaminant. The characteristic changes in the tracking time of the aged specimens are analyzed through leakage current measurement. The observed trends in the leakage current during…
Based on the in vitro and the in vivo analyses, silica xerogels can be characterized as resordable and biocompatible materials for the controlled release of drugs and larger biologically active molecules.