Materials Literature
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The effects of polyester content, pick density and weave on the thermal comfort and tactile properties of polyester/viscose blended yarn fabrics have been studied by measuring the low- stress mechanical properties on Kawabata evaluation system. The thermal comfort has been studied by measuring the air permeability, th…
We report studies of the orientation state of multiwalled carbon nanotubes (MWNTs) dispersions in steady and transient shear flows. Uncured epoxy was used as a viscous Newtonian suspending medium and samples were prepared from "aligned" MWNTs using methods previously reported [S. S. Rahatekar et al., J. Rheol. 50, 599…
A radio frequency oscillator circuit based on a proximity detector integrated circuit is described as an alternative for the traditional tunnel diode oscillator used for pulsed magnetic field measurements at low temperatures. The proximity detector circuit design, although less sensitive than tunnel diode oscillator c…
Nanoporous and nanostructured films have become increasingly important to the microelectronics and photonics industries. They provide a route to low dielectric constant materials that will enable future generations of powerful microprocessors. They are the only route to achieving materials with refractive indices less…
The migration behaviour of low molecular weight compounds from food packaging materials is one of the key issues in assessing the possibility of use in such applications. The aim of this work was to study the migration of carvacrol (1% and 2% w/w) when added to high-density polyethylene. All materials were exposed to…
Textured 0.94Na 0.5 Bi 0.5 TiO 3 –0.06BaTiO 3 (NBT–6BT) ceramics were fabricated by templated grain growth (TGG) using anisotropically shaped Na 0.5 Bi 0.5 TiO 3 (NBT) templates. Platelet NBT was synthesized by the topochemical technique, using precursor Na 0.5 Bi 4.5 Ti 4 O 15 (NBIT). The NBT particles have an averag…
Abstract This article deals with the failure of polyethylene pipes transporting chlorine dioxide (DOC) disinfected water under pressures of few bars. Accelerated aging tries made at 20 or 40°C show that the antioxidant is rapidly consumed in a superficial layer until a depth of about 1.2 mm. Carbonyl groups appear in…
We report on optical, structural, and magnetic properties of two substantially different cobalt nanostructure thin films deposited at an oblique angle of incidence of 85° away from the substrate normal. Comparison is made between an achiral columnar thin film grown without substrate rotation and a chiral nanocoil scul…
The geometries and electronic structures resulting from surface reduction, CO adsorption, and NO 2 adsorption at the (110) surface of CeO 2 have been calculated using density functional theory corrected for on-site Coulomb interactions, GGA+ U . We report a novel electronic structure for the reduced surface, denoted t…
We develop a local spin model to explain the rich magnetic structures in the iron-based superconductors Fe 1+ y Te 1− x Se x . We show that our model exhibits both commensurate antiferromagnetic and incommensurate magnetic order along the crystal a -axis. The transition from the commensurate to the incommensurate phas…
Nanostructured alpha-MnO(2) thin films with different morphologies are grown on the platinum substrates by a facile solution method without any assistance of template or surfactant. Microstructural characterization reveals that morphology evolution from dandelion-like spheres to nanoflakes of the as-grown MnO(2) is co…
Cobalt ferrite nanoparticles (size: 26±4nm) have been synthesized by coprecipitation route. The coercivity of nanoparticles follows a simple model of thermal activation of particle moments over the anisotropy barrier in the temperature range of 30–300K in accordance with Kneller’s law; however, at low temperatures (&a…
Indigenous Montmorillonite clay available from Kutchh region in western part of India was modified by Hexadecyl trimethyl ammonium bromide, a quaternary ammonium compound to make it organophilic. It was blended with high density polyethylene (HDPE) in a Brabender Plasticoder. The condition for blending was optimized a…
The diversity of chloroplast forms, and their number and cellular location, as well as pyrenoid structure, distinguishes diatoms from other groups of heterokont algae. The fine chloroplast structure is considered to be informative for taxonomic and phylogenetic studies of diatoms. Six species of diatoms belonging to d…
This paper provides an overview of the current understanding of the Ti anodisation process. As compared to other valve-metals, Ti exhibits several significant differences regarding its anodisation behaviour, the most important one being the marked semiconducting character of its anodic oxide. In the first part of this…
Capillary forces acting at the air‐water interface play an important role in colloid fate and transport in subsurface porous media. We quantified capillary forces between different particles (sphere, cylinder, cube, disk, sheet, and natural mineral particles) and a moving air‐water interface. The particles had differe…
The aging of silicone rubber by gamma irradiation has been investigated. Silicone Rubber flat specimens were aged by gamma irradiation with three different doses and the resistance to tracking on applying ac and dc voltages was examined. The results show that the resistance to tracking under dc voltages is less than t…
Gold nanoparticles in aqueous dispersion were prepared using the trisodium citrate reduction method to control the size of particles by changing the concentration of HAuCl 4 . The average particle size measured by DLS is higher than that obtained by TEM at a zeta potential of -40 mV. When trisodium citrate concentrati…
Degradation behavior of the electrical resistance of acceptor (Mg)‐doped BaTiO 3 ceramics was contrasted against different acceptor concentrations. Coarse‐grained specimens with uniform grain sizes and different acceptor concentrations were prepared by sintering both in air and a reducing atmosphere. The specimens sin…
Cardiovascular disease is the leading cause of mortality in the United States. The limited availability of healthy autologous vessels for bypass grafting procedures has led to the fabrication of prosthetic vascular conduits. Synthetic polymeric materials, while providing the appropriate mechanical strength, lack the c…