Materials Literature
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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…
Abstract A hierarchical structure with a large surface area and an efficient carrier transfer of the electrons has been developed. This structure is composed of zinc oxide nanorods surrounded by nanoporous zinc oxide and is obtained by a two‐step cathodic electrodeposition. Different geometries could be identified whe…
The optical properties of TlGaS2; TlGaSe2, and TlInS2 crystals have been investigated through transmission and reflection measurements in the wavelength range of 400 - 1100 nm. Optical indirect and direct band gap energies of 2.45 and 2.63 eV (TlGaS2), 1.97 and 2.26 eV (TlGaSe2), 2.27 and 2.47 eV (TlInS2) were found b…
The dynamics of miscible blends of poly( p -(hexafluoro-2-hydroxyl-2-propyl)styrene) (PolyHFS) with poly(vinyl methyl ether) (PVME) and poly(2-vinylpyridine) (P2VPy) were investigated via broadband dielectric relaxation spectroscopy (DRS). The HFS moiety forms strong intermolecular associations with proton-accepting p…
Different electric field intensities were added along the growth direction of CuO nanoneedles when using a thermal oxidation process. The results show that: (1) the length of CuO nanoneedles increased with the electric field, but when the voltage was greater than a certain value, the growth stopped and (2) the diamete…
The proteome of the radiation- and desiccation-resistant bacterium D. radiodurans features a group of proteins that contain significant intrinsically disordered regions that are not present in non-extremophile homologues. Interestingly, this group includes a number of housekeeping and repair proteins such as DNA polym…
The structural and magnetic properties of Tm2Fe17−xCrx (x=0, 0.5, 1.0, 1.5, and 2.0) compounds are investigated by means of x-ray diffraction and magnetization measurements. The Tm2Fe17−xCrx compounds have a hexagonal Th2Zi17-type structure. There exist a negative thermal expansion coefficient for Tm2Fe17−xCrx compoun…
The effect of stress on void nucleation during solid–solid reaction of ZnO/Al2O3 core–shell nanowires and multilayer structures through the nanoscale Kirkendall effect is investigated. A flexible stress-mediated approach is suggested to spatially define the localization of large Kirkendall voids in these systems. New…
We explored how to increase liquid crystal sensitivity to external magnetic fields. Suspensions consisting of a mixture of liquid crystal and spindle type mono-dispersed hematite nano-particles at concentrations lower than 1 wt% were prepared. The Fréedericksz transition threshold for the suspensions appeared to be lo…
Abstract The effect of organo‐modified clay (Cloisite 93A) on the crystal structure and isothermal crystallization behavior of isotactic polypropylene (iPP) in iPP/clay nanocomposites prepared by latex technology was investigated by wide angle X‐ray diffraction, differential scanning calorimetry and polarized optical…
The effect of the beeswax, Span 20, and glycerol content on qualities of soybean-protein-isolate edible films was evaluated. Beeswax and Span 20 were selected to improve qualities of soybean-protein-isolate films from 11 emulsifiers. The content of beeswax, Span 20, and glycerol was further optimized by response surfa…
A phase diagram for morphotropic (Pb0.985La0.01)(Zr1−xTix)O3 is proposed based on a combination of X-ray and neutron powder diffraction experiments and complemented by transmission electron microscopy. Dependent on composition three regions are characterized. The stability range of tetragonal microdomains for high Ti…
By using high resolution x-ray photoelectron spectroscopy, we show that inelastic scattering of photoelectron at low temperature (30-50 K) generates two kinds of oxygen species on Pt (111) surface. Intense synchrotron radiation source dissociates oxygen molecules into chemisorbed atomic oxygen and induces the formatio…
Surface modification of lanthanide-doped upconversion nanocrystals is crucial to make them useful for various biological applications. Unfortunately, the current methods available to achieve a desirable surface exhibiting both high luminescence and good biocompatibility are limited. In this work, we present a facile m…