Materials Literature
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High-performance asymmetric super-capacitors containing thick-film electrodes (over 100 μm thick) made of CNT/V2O5 nanowire composite are designed. The excellent conductivity, high specific capacitance, and a large voltage window of the CNT/V2O5 nanocomposite enable the fabrication of devices with high energy and high…
The time evolution of the local chain persistence determined by small-angle X-ray scattering (SAXS) in the aggregation kinetics of vinyltriethoxysilane(VTES)-derived organic/silica hybrids has been analyzed by the classical Sharp and Bloomfield (SB) model, by a mass-fractal Unified Function (UF) with an arbitrary mass…
In an organic conductor β″-[bis(ethylenedithio)tetrathiafulvalene]3(HSO4)2, characteristic voltage oscillation is observed in the negative differential resistance region of the nonlinear conductivity below the metal–insulator transition at 125 K. The observed frequency f is 4–25 kHz and increases linearly with the col…
The 0.5Bi0.8La0.2FeO3–0.5PbTiO3 (BLF-PT) solid solution nanoparticles of different particle sizes are prepared using sol-gel method and characterized in terms of the size-dependent crystal structure, Raman scattering, dielectric susceptibility, and magnetism. Upon decreasing particle size, the crystal structure evolve…
We have fabricated a magnetoelectric laminate structure composed of magnetostrictive Tb0.3Dy0.7Fe1.92 (Terfenol-D) alloy and LaMnO3+δ (LMO)/0.67Pb(Mg1/3Nb2/3)O3–0.33PbTiO3 (PMN–PT) structure where the LMO film is epitaxially grown on the piezoelectric PMN–PT single-crystal substrate. When an external dc magnetic field…
The effect of four types of silane coupling agents on the mechanical and thermal properties of silicone rubber and ethylene–propylene–diene monomer (M-class) rubber (EPDM) blends is studied, namely, isobutyltriethoxysilane (BUS), acryloxypropyltriethoxysilane (ACS), aminopropyltriethoxysilane (AMS), and vinyltriethoxy…
The effects of gas adsorption and high current on the field emission characteristics of ZnO nanoneedles grown directly from metal electrodes have been systematically investigated. Exposure of nanoneedles to H2, N2, or O2 gas degraded the field emission characteristics, with O2 having the strongest impact. Complete rec…
The potential of hysteresis loop-based methods for the characterization of granular magnetic materials is investigated in the presence of thermal relaxation effects. Specifically, we study the reliability of the ΔH(M,ΔM)-method to recover the intrinsic switching field distribution in the presence of thermal relaxation…
A facile solution chemistry is demonstrated to fabricate high-quality polycrystalline strontium ruthenium oxide (SrRuO 3 ) thin film electrodes on silicon substrates suppressing the formation of undesired ruthenium oxide (RuO 2 ) for the deposition of dielectric and ferroelectric materials like lead lanthanum zirconat…
An original two-step “three phase” elastic–viscoplastic scale transition model is developed based on the combined self-consistent and Mori–Tanaka schemes. A coated inclusion is embedded within a matrix, wherein the inclusion represents grain interiors and the coating of the inclusion mimics the effects of grain bounda…
The most commonly used heavy-atom derivative, selenium, requires the use of a tunable beamline to access the Se K edge for experimental phasing using anomalous diffraction methods, whereas X-ray diffraction experiments for selenium-specific ultraviolet radiation-damage-induced phasing can be performed on fixed-wavelen…
In this study, we have explored the possibility of the application of the functionalized silver nanoparticles (Ag NPs) as drug carriers allied with anticancer drug daunorubicin (DNR) for efficient cancer chemotherapy. The results demonstrate that Ag NPs can enhance the intracellular drug DNR accumulation concentration…
Shape-Persistent Macrocycles (SPMs) are synthetic organic macromolecules characterized by a rigid open hoop or ring with flexible side groups pointing either towards the inside or outside of the structure. In a previous work, we have studied the liquid crystalline behavior of a Coarse-Grained model of SPMs using Molec…
Abstract Weak polyelectrolytes poly(allylamine hydrochloride) (PAH) and poly(acrylic acid) (PAA) were assembled into {PAH/PAA} n layer‐by‐layer films on electrodes. The cyclic voltammetry (CV) response of ferrocenecarboxylic acid (Fc(COOH)) at {PAH/PAA} 5 film electrodes assembled under the specific condition showed p…
The local structure of the parent and doped LaFeAsO1−xFx (pnictide) compounds were studied by x-ray absorption spectroscopy and density functional methods. In the doped system, the Fe–As and Fe–Fe correlations are both well modeled by an Einstein model. For the Fe–As bonds, the Einstein temperatures are identical for…
We performed dielectric measurements of aqueous solutions of hydroxypropyl cellulose (HPC) with various concentrations in the temperature range between 25 °C and -20 °C. A primary relaxation process due to the motion of free water restricted by HPC molecules is observed at GHz region. The relaxation time and shape par…
In this paper, we demonstrate a fabrication process for large area (2 mm × 2 mm) fishnet metamaterial structures for near IR wavelengths. This process involves: (a) defining a sacrificial Si template structure onto a quartz wafer using deep-UV lithography and a dry etching process (b) deposition of a stack of Au-SiO₂-…
We study in this paper the atomic mechanisms of nanorod growth and propose the mechanism of diameter selection of nanorods. A characteristic radius is demonstrated to be crucial in nanorod growth. If the critical size of the two-dimensional nucleus is assumed to be 1, the characteristic radius increases proportional t…
In the materials selection process of user-centred design projects, the \nemphasis shifts from technology towards user-interaction aspects of \nproducts. Materials form the interface of the product with the user and \ninfluence the sense of quality, pleasantness of interaction, personality of the \npro…
The weathering and low-temperature alteration of basaltic glass was studied by geochemical modelling in order to gain an insight into the effects of temperature, acid supply and extent of reaction on the secondary mineralogy and water chemistry. Basaltic glass was dissolved in dilute water at 10–150°C in a closed syst…