Materials Literature
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Optical microscopy and multi-particle tracking are used to study the short-time self-diffusion of weakly charged silica spheres at a water-air interface. The measured short-time self-diffusion coefficient D S S has the form, D S S / D 0 =α(1−β n ), where n is the area fraction occupied by the particles and D 0 is the…
The effects of alcohol, acetone, and methyl ethyl ketone solvent-based treatment on surface topography of ramie single fiber are investigated. In this study, the average of specific porous volume and specific surface area of ramie single fiber are determined to interpret the effects of the treatment quantitatively usi…
Phototransport properties of organically capped colloidal CdSe quantum rod thin films deposited by spin coating are studied in air at room temperature in planar electrode configuration. Under optical excitation, the observed current-voltage characteristics and current transients are well described by a resonant tunnel…
The electro-spinning process and morphology of electro spun nanofibers depend on many processing parameters. These parameters can be divided into three main groups: a) solution properties, b) processing conditions, c) ambient conditions. In this paper, we report the results of a comprehensive investigation of the effe…
Magnesium phosphate cement (MPC) paste is prepared by mixing dead burned magnesia powder and potassium di-hydrogen phosphate with a proper proportion of water. The superior properties such as fast setting, high early strength, low shrinkage and good bonding makes MPC suitable for applications in rapid repair of infras…
This work presents the temperature dependence of the dielectric properties of two types of epoxy mica insulation systems. Polarization and depolarization currents, insulation resistance, capacitance and polarization index were measured over a temperature range of 20 to 100degC on whole rotating machine stator bars. An…
Nanostructures and microhardness of a commercial purity Al, three binary Al–Mg alloys and a commercial AA5182 alloy subjected to high pressure torsion (HPT) at room temperature were comparatively investigated using high-resolution transmission electron microscopy, X-ray diffraction (XRD) and high-resolution XRD line p…
Accurate estimation of the available potassium (K+) supplied by calcareous soils in arid and semi‐arid regions is becoming more important. Exchangeable K+, determined by ammonium acetate (NH4OAc), might not be the best predictor of the soil K+ available to crops in soils containing micaceous minerals. The effectivenes…
The aim of this study was to investigate the antibacterial activity of chitooligosaccharide, prepared by partial acid hydrolysis of chitosan, and of an aminoglycosylated derivative, prepared by reductive alkylation of the chitooligosaccharide, against E. coli and S. aureus.
Because of the excellent high insulation performance, vacuum is expected to be one of the alternatives of SF6gas. In order to reduce the use of SF6gas in substation equipment, the applicability of vacuum circuit breakers (VCB) and vacuum interrupters (VI) should be extended to higher (typically 145-300 kV) voltage. Fo…
The lattice damage was investigated by x-ray diffraction techniques in yttria-stabilized zirconia single crystals with the (100) or (110) orientation upon irradiation with swift heavy ions (from 100-MeV C to 2.6-GeV U) in a broad electronic stopping power range (from about 0.3 to 48 keV nm−1). The θ-2θ scans show that…
We developed new principle of electronic paper that is one side (for 2D image) or double side (for stereoscopic 3D image) light printable rewritable matter with polarization dependent gray scale. It consists of one or two liquid crystal displays based on Optical Rewritable (ORW) technology, which is the development of…
The characteristics of electric-field-controlled diffraction elements based on a nematic liquid crystal and a new photoalignment polymer have been studied. The photocross-linking of this polymer allows periodic oriented structures and liquid crystal phase gratings with a 30% diffraction efficiency in the first order t…
Two kinds of low-density polyethylene (LDPE) composites were prepared by adding semi-spherical MgO fillers different in diameter, one being around several ten nm and the other being several mum, and their dielectric properties were compared. At all the measurement temperatures, the conductivity is decreased and the pe…
We have demonstrated the utility of nanoindentation as a rapid characterization tool for mapping shape memory alloy compositions in combinatorial thin-film libraries. Nanoindentation was performed on Ni–Mn–Al ternary composition spreads. The indentation hardness and the reduced elastic modulus were mapped across a lar…
In the last years, there has been a real growth of interest in the use of high-temperature molten salt fluorides as coolants and fuel salts in nuclear power systems. For all molten salt reactor (MSR) concepts, material selection is a very important issue. This paper summarizes results of recent work done within the IS…
This paper presents a new Epstein frame capable of core loss measurements on laminations subjected to high frequencies and high flux densities. The lamination characterization at high frequencies and high flux densities is mandatory in loss calculation procedure for high speed novel designs. The new 200- turn frame is…
The surface plasmon resonance (SPR)-based sensor technique is based on the utilization of a noble metal to generate a surface plasmon electromagnetic field, which is then used to probe changes in the optical properties. Using nanoplates, it is possible to considerably enhance the sensitivity of a conventional SPR devi…
Dielectric measurements of modified BaTiO3 in a multilayer ceramic capacitor (MLCC) show that the application of external uniaxial stress perpendicular to electric field in a MLCC can lead to a slight increase in the dielectric permittivity. The additional application of a dc bias results in a significantly suppressed…
Ion beams have been found to be widely applicable in improving the structure and physical properties of polymers. In this paper, the effect of ion bombardment on the optical properties of low density polyethylene (LDPE)/styrene butadiene rubber (SBR) blend (LDPE/SBR) was studied. Polymer samples were bombarded with 13…