Materials Literature
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We report photoluminescence (PL) investigations on Si-rich amorphous hydrogenated silicon nitride (a-SiNx:H) thin films of different compositions, using three different excitation lasers, viz., 325 nm, 410 nm, and 532 nm. The as-deposited films contain amorphous Si quantum dots (QDs) as evidenced in high resolution tr…
The low-temperature transport properties were systematically studied on the electron-doped polycrystalline La1−xHfxMnO3 (x = 0.2 and 0.3) compounds at the presence of external magnetic fields. The resistivity of all samples exhibits a generally low-temperature resistance upturn behavior under zero magnetic field at th…
We show that the Helfrich deformation can be used for fast response time, low driving voltage reflective displays by using cholesteric liquid crystals under short voltage pulses (∼10 ms). Rather than turning planar domains into focal conic domains through a nucleation process, as used in bistable modes, the fast volta…
Oocyte meiotic maturation and viability of follicular granulosa cells in young and old experimental Balb/C and CBA mice in the presence of ceria nanoparticles were studied. Treatment of old Balb/c mice with ceria nanoparticles for three days once a day (at a dose of 45 mg/kg) leads to a positive effect on reproductive…
3D molecular dynamics simulations are performed to investigate the role of microstructural confinement on room temperature stress-driven grain boundary (GB) motion for a general population of GBs in nanocrystalline Al thin films. Detailed analysis and comparison with experimental results reveal how coupled GB migratio…
The phase transformation of Ge2Sb2Te5 films from the melt-quenched amorphous phase into the crystalline phase induced by 800 nm, 100 fs laser pulses has been studied. For partly amorphized films, progressive crystallization could be induced by single pulses, which can be explained by growth of already existing crystal…
The effect of europium (Eu)-doping on the optoelectronic carrier transition properties of pseudo-cubic barium titanate (BT) nanostructured system is being reported. Referring to x-ray diffractograms, apart from the diffraction peaks related to perovskite BT structure, non-existence of any additional peaks due to bypro…
Large amplitude steady waves in materials have been observed to display certain scaling relationships between the strain rate and the stress amplitude. In many homogeneous materials, strain rate scales with stress to the fourth power. However, scaling of strain rate with stress to the first, second, and fourth power h…
Abstract This study investigates the effects of Polyvinyl Alcohol (PVA) as a binder on the mechanical and physical properties of wood polymer composites (WPCs). The WPCs were manufactured from tropical sawdust and polypropylene using a hot press molding method at five levels of sawdust loading (10–30 wt). For the manu…
The use of both graphene oxide (GO) and reduced graphene oxide (RGO) as carbocatalysts for the polymerization of 3-aminophenylboronic acid (ABA) was investigated for the first time. During the electrochemical polymerization of ABA, only RGO can effectively increase the polymerization rate due to the electronic interac…
A three-valley Monte Carlo simulation approach is used in order to probe the transient electron transport that occurs within bulk wurtzite zinc oxide, bulk wurtzite gallium nitride, and bulk zinc-blende gallium arsenide. For the purposes of this analysis, we follow the approach of O'Leary et al. [O'Leary et al., Solid…
Deep level defects in n-type unintentionally doped a-plane MgxZn1−xO, grown by molecular beam epitaxy on r-plane sapphire were fully characterized using deep level optical spectroscopy (DLOS) and related methods. Four compositions of MgxZn1−xO were examined with x = 0.31, 0.44, 0.52, and 0.56 together with a control Z…
Abstract A novel poly(diisoamyl itaconate‐ co ‐isoprene) (PDII) bioelastomer was prepared by redox emulsion polymerization based on itaconic acid, isoamyl alcohol, and isoprene. Carbon black (CB), silica, and silica with coupling agent ( bis (3‐(triethoxysilyl)‐propyl)tetrasulfide [TESPT]‐silica) were used as fillers…
Heusler nanocrystals, i.e., Heusler compounds with dimensions in nanometer range are promising materials for next-generation spin-related devices. Recently, we have developed a chemical approach to prepare L21 ordered Heusler nanoparticles and characterized their size-related structure and magnetic properties. In this…
We report on the magnetocaloric effect in an Fe-based metallic glass (Fe80B12Nb8) as compared to the benchmark material gadolinium. From temperature-dependent magnetization measurements, the magnetic entropy change was calculated using the thermodynamic Maxwell relations. The adiabatic temperature change was directly…
The structural, transport, and magnetic properties of CaMn1−xFexO3−δ (0.0 ≤ x ≤ 0.3) have been studied by using resistivity, magnetization, and neutron powder diffraction techniques. The compounds are found to be isostructural and crystallize in GdFeO3-type orthorhombic structure (space group Pnma). With Fe doping, no…
Influence of alloying elements M (M = Al, Cr, Cu, Fe, Mo, Nb, Ni, Sn, Ta, V, W, and Zr) on phase stability and elastic properties of titanium was studied by first principles total energy calculations. The formation energies of various phases of binary Ti-M alloys are evaluated to identify the influence of alloying ele…
PEDOT nanostructures with distinct patterns can be formed by means of electrodeposition in titania nanotubes. The deposition process critically depends on the current protocol, leading to selective filling of the inner and/or outer space of the tubes. The approach allows for synthesis of vertically aligned PEDOT–titan…
Strain response of polycrystalline barium titanate (BaTiO3) was investigated under high unipolar electric field (0 to 4 kV/mm) and compressive stress (0 to 400 MPa) in the temperature range from 25 to 160 °C. In the vicinity of the Curie point (TC), nonlinear and hysteretic strain-electric field and strain-stress cons…
The effect of volatile boron species on the microstructure and electrocatalytic activity of conventional (La,Sr)MnO 3 (LSM) and nano-structured LSM infiltrated Y 2 O 3 -ZrO 2 (LSM-YSZ) cathodes of solid oxide fuel cell (SOFC) is studied. The cathodes were heat-treated at 700–800°C in air for 7–30 days in the presence…