Materials Literature
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Measurements of magnetic, transport properties, thermal conductivity, and magnetization under pressure as well as neutron diffraction have been made on a single crystal and powder sample of LaVO3. The Néel temperature was found to mark a transition from the phase with both frustrated superexchange interaction and spin…
We report the growth of zinc-blende CrTe thin films with a nominal thickness of 5 nm by low-temperature molecular-beam epitaxy. Reflection high-energy electron diffraction patterns, atomic force microscopy and high-resolution transmission electron microscopy analyses established that a quasi-two-dimensional layer-by-l…
Adsorption and diffusion of carbon atoms in nickel are studied by density-functional theory calculations to understand the growth mechanism of carbon nanotubes in its initial stage. Combined with the results for surface and subsurface diffusions, the diffusion behaviors around the edges between low-index nickel surfac…
Abstract Poly‐2,3 ‐ bis[(2‐hydroxy‐3‐methoxyphenyl)methylene]diamino pyridine (PHMPMDAP) that a new Schiff base polymer has been synthesized and characterized by spectroscopy, elemental, and thermal analyses techniques. This azomethine polymer was found to form complexes readily with Cu(II), Zn(II), Co(II), Pb(II), an…
The density of reactive carboxyl groups on the surface of poly(lactide-co-glycolide) (PLGA) nanoparticles (NP) was modulated using a combination of high-molecular weight (MW) encapped and low MW non-encapped PLGA. Carboxyl groups were activated using carbodiimide chemistry and conjugated to bovine serum albumin and a…
The present paper deals with the factors affecting the packing of a micro-porous yarn, namely proportion of PVA fibre content, yarn twist multiplier (TM) and spindle speed at ring frame, and with their combined effect on various properties of the yarn. The micro-pores within the structure of the yarn have been created…
This study fabricates one-dimensional ZnO nanostructures on a tin-doped indium oxide (ITO) glass substrate by thermal evaporation of Zn powder at 400 °C. The study finds that ZnO nanocones, ZnO nanorods and ZnO nanowires can be synthesized with a catalyst-free ITO glass, a Pt-coated ITO glass and an Au-coated ITO glas…
Abstract BACKGROUND: Polymer–clay nanocomposites (PCNs) have attracted considerable interest in recent years owing to their unique physical and chemical properties that lead to a wide range of applications. A series of PCN materials consisting of polyimide and layered montmorillonite (MMT) clay were successfully prepa…
We report on the transport and optical properties of transition metal ions, namely Ti, V, Fe, Co and Ni doped ZnO samples. Diffuse reflectance spectroscopy of doped ZnO showed the existence of absorption bands which were attributed to the d-d transitions of respective dopants. Resistivity was found to decrease in the…
The structural, magnetic, electrical and thermal properties have been investigated in single-layered perovskite compounds of SrLnCoO 4 (Ln = La, Ce, Pr, Nd, Eu, Gd and Tb) with a K 2 NiF 4 -type structure. The variation of Jahn–Teller distortion of the CoO 6 octahedron reflected by two different Co–O bond lengths indi…
Although stress-induced martensitic transformation accelerates grain refinement during plastic deformation, it results in serious damage to recoverable elasticity and ductility of severely cold-rolled multifunctional titanium alloys. Here, large-scale nonlinear elasticity and high ductility were achieved simultaneousl…
ZnO thin films were deposited using atom beam sputtering and their modifications have been shown by two processes: (a) thermal annealing of ZnO thin films in oxygen and (b) athermal annealing by irradiation of these films by swift heavy ions (SHIs) in a high vacuum chamber. The as-deposited films showed the nanocrysta…
In this work, we report on the studies of dielectric, magnetic, and magnetotransport properties of Sr doped RE2−xSrxCoO4 (RE=Pr or Eu, x=0.25–1.5). These compounds were systematically studied in terms of structure, magnetic, magnetotransport, and dielectric constant measurements. Rietveld refinement indicated that the…
Using hydrogenography, we recently mapped the thermodynamic properties of a large range of compositions in the quaternary Mg-Ti-Ni-H system. The enthalpy of hydride formation of Mg-Ni alloys is significantly altered upon Ti doping. For a small range of compositions, we find a hydrogenation enthalpy $\ensuremath{\Delta…
The crystal symmetry of $\mathrm{Bi}\mathrm{Mn}{\mathrm{O}}_{3}$ was investigated by convergent-beam electron diffraction (CBED) and selected-area electron diffraction (SAED). CBED, which was used in order to discriminate the crystal axes of $\mathrm{Bi}\mathrm{Mn}{\mathrm{O}}_{3}$ in this study, showed that $\mathrm{…
We developed all-solid-state switchable mirror on flexible plastic [polyethylene terephthalate (PET)] sheet in the view point of low process cost and easy handling. Its optical switching property was investigated. Though the device on PET sheet showed over 4000cycles of switching in durability test, it was lower than…
We have performed first-principles density-functional projector augmented-wave calculations to investigate the energetics of Mg and B adsorption on polar zinc oxide (ZnO) surfaces, thereby to understand the origin of the peculiar affinities between an epitaxial $\mathrm{Mg}{\mathrm{B}}_{2}$ film and the ZnO substrate.…
The homogeneously aligned liquid crystal display on Ta2O5 via ion beam (IB) irradiation was first embodied with controllability of pretilt angle depending on incident angle of the IB. As a result of x-ray photoelectron spectroscopic analysis, the intensity of Ta–O and O–Ta bondings as a function of incident angle beha…
Abstract The double yield phenomenon was studied using numerous specimens uniaxially deformed up to different elongations of linear low‐density polyethylene samples. Extruded samples prepared under different conditions were deformed at 1, 10, and 50 mm/min. The crystallinity under stressed state was calculated using t…
Abstract The objective of this work is to develop nonfouling biomaterials by blending polyethylene oxide (PEO)‐containing block copolymers with a polyurethane (PU) matrix; it is expected that the PEO component will migrate to the tissue‐material interface. Three amphiphilic triblock copolymers, PEO‐PU‐PEO, in which th…