Materials Literature
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We show that anodization of Ti sheets in an ethylene glycol and HF containing electrolyte at temperatures under 0 °C results in the formation of a self-arranged ordered porous structure at the top surface of the sample. This perforated surface structure initiates the growth of an ordered array of titania nanotubes. Th…
Abstract This work investigates the influence of some ammonium quaternary compounds as coupling agent in polyethylene/clay nanocomposites to improve the performance of polyethylene used as packaging barrier material. The 3 wt % of vermiculite used as a nanofiller was added to linear low‐density polyethylene (LLDPE) an…
Lu 2− x Ho x O 3 ( x =0.015–0.211) nanocrystals were synthesized by the modified Pechini method, and their nanoceramics were produced by the high‐pressure low‐temperature technique. Structural, morphological studies, and distribution particle size of nanocrystals and sintered pellets were carried out using X‐ray powde…
Abstract This article describes a versatile two‐step method for gold/polyaniline derivative core/shell nanocomposites with the aid of nonionic surfactant F127. First, F127 and monomer were introduced to gold colloids followed by the addition of oxidant to initiate the polymerization of monomer to afford a conducting p…
It has been observed that the polymeric nanoparticles, copolymer of polybenzene and anthracene (PBA NPs), can induce a homeotropic (HMT) alignment in various ferroelectric liquid crystal (FLC) mixtures. The HMT alignment of various FLCs is attributable to the fact that the anthracene molecules favor an upright orienta…
We have modeled, fabricated, and characterized superhydrophobic surfaces with a morphology formed of periodic microstructures which are cavities. This surface morphology is the inverse of that generally reported in the literature when the surface is formed of pillars or protrusions, and has the advantage that when imm…
Nanoencapsulation technology has a diverse range of applications, including drug-delivery systems (DDS) and cosmetic and chemical carriers, because it can deliver various bio- and organic-molecules and improve their stabilities. Conjugated linoleic acid (CLA) has health benefits, including being an anticancer agent, b…
We report on the conformal synthesis of ultrathin films from the amino acid histidine on flat silicon substrates and 3D periodic polymer structures via plasma enhanced chemical vapor deposition. We demonstrate the efficient utilization of this functional amino acid nanocoating for the formation of individual titania n…
Abstract Random copolymers of styrene, p ‐azidomethylstyrene and 1H,1H,2H,2H‐perfluorodecyl methacrylate were prepared in two steps involving nitroxide‐mediated radical copolymerization and azidation reaction and further characterized by 1 H and 19 F NMR, size exclusion chromatography, differential scanning calorimetr…
The adsorption properties of transition-metal (TM) dimers on defect-free MgO(001) surfaces were studied from a series of ab-initio electronic structure calculations for late TM atoms of Cu, Ag, Au, Ni, Pd, and Pt. Two dimer configurations were considered: an upright dimer structure and a flat lying dimer structure. Fo…
Results of x-ray absorption studies of the structure of amorphous InSb are reported. We demonstrate that approximately 1% bond elongation in the amorphous phase (as compared to the crystalline phase) is accompanied by a counterintuitive increase (approximately 5%) in density. We argue that this controversy is due to t…
Amorphous gallium indium zinc oxide (a-GIZO) thin films of different compositions (Ga2O3:In2O3:ZnO=1:1:1,2:2:1,3:2:1,4:2:1) on Si substrates were investigated by high-resolution x-ray photoelectron spectroscopy and x-ray absorption spectroscopy (XAS) using synchrotron radiation. The O 1s, Ga 3d, In 4d, Zn 3d core, and…
A mesoscale reaction (MSR) model is proposed as part of a multiscale numerical modeling approach to study reactive powder metal mixtures. A discrete particle simulation (DPS) incorporates details of phase morphology and arrangement which are an integral part of designing this class of materials. The DPS provides the s…
Introducing sp3 bonds in carbon nanotubes can significantly modify their electronic properties but need high pressure at room temperature. Here we show by molecular dynamics simulations that sp2 to sp3 bond transition can be realized through bending manipulation at the buckling location, resembling that of nanoindente…
We study the emergence of multiband superconductivity with s- and d-wave symmetry on the background of a spin density wave (SDW). We show that the SDW coherence factors renormalize the momentum dependence of the superconducting (SC) gap, yielding a SC state with an unconventional s-wave symmetry. Interband Cooper pair…
Structural and magnetic properties of electrochemically prepared crystalline films of Prussian blue analogs (PBAs) KjFekII[CrIII(CN)6]l⋅mH2O, with varying deposition time and electrode voltage, which result into change in film thickness and stoichiometry, respectively, have been investigated by using x-ray diffraction…
A combination of microcompression experiments on single crystal micron-scaled pillars of NiTi of known orientations and in situ neutron diffraction during loading of the same NiTi but in bulk, polycrystalline form are carried out to understand the stress-induced transformation associated with superelasticity at reduce…
Epitaxial thin films of the iron chalcogenide superconductor FeSe with Tc≃7 K were prepared by Molecular Beam Epitaxy. The films grow in (001)-orientation on YAlO3(110) substrates. The influence of the Fe to Se atomic ratio on the transport properties of the samples is studied. Only within a narrow compositional range…
Polyimide foils were irradiated with energetic Kr (740 MeV) and Pb (890 MeV) ions at cryogenic temperature (12 K). Beam-induced degradation processes were monitored by residual gas analysis and online infrared spectroscopy. The outgassing components observed at low irradiation temperatures differ in quantity but are s…
Red-light (620−750 nm) has promisingly been used as a primary phototherapy tool in the medical field that can easily penetrate through the body of patients. Here we report that interstitially N-doped In 2 O 3 nano/microstructures including nanorods, nanoellipses, microspheres, and microbricks, show a unique, novel, an…