Materials Literature
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We show the contribution of weak localization in two-dimensions as well as electron--electron interactions at low temperature to the delocalized transport in heavily nitrogen-incorporated nanocrystalline diamond (NCD) films via magnetoresistance. The unique carbon-microstructure of the grain-boundary regions, which is…
The design of ordered nonsiliceous mesoporous materials is illustrated based on the surfactant assembly and confined-space growth. These materials include mesoporous metal oxides, polymers, and carbons with open framework structures, and single-crystal metal, metal oxide and carbon nanoarrays with replicated mesostruc…
Carbon encapsulated Ni nanotubules, synthesized by a simple chemical method with linear polymer templates, reveal a high saturation magnetization (Ms) close to bulk fcc-Ni value, with larger coercivity 140Oe at 300K. An improvement in basic ferromagnetic character is reflected in the remanent magnetization (Mr), which…
Ultraviolet emitting silicon species were extracted from strongly hydrogenated porous silicon nanostructures. Their photoluminescence spectra depend on size distribution of the species and can be tuned by centrifugation. Molecular structure of the extracted Si species is assumed to be very similar to some kinds of pol…
The influence of $^{57}\text{F}\text{e}$-doping and strain effects on the structural and magnetotransport properties of undoped and lightly doped $^{57}\text{F}\text{e}$ (1 and 3% at Mn site) ${\text{La}}_{2/3}{\text{Ca}}_{1/3}{\text{MnO}}_{3}$ thin films and bulk powder samples have been studied. Thin films were grow…
<div class="htmlview paragraph">With more and more stringent standards concerning soot mass and number at the tailpipe of Diesel vehicles, the control of Diesel Particulate Filter regenerations is becoming a key feature for car manufacturers. When regulations on particle number will appear, even low cracking of…
Abstract We have extended our unenhanced (non‐SERS) Raman spectroscopic investigations to include a study of the corrosion of an iron electrode in carbonate and phosphate buffer solutions. The measurements have been supported by electrochemical investigations (via cyclic voltammetry), enabling oxidation and reduction…
Abstract Mechanical properties of partially hydrogenated natural rubber (HNR) vulcanizates were evaluated regarding their chemical structure and crystallizable nature of HNR, and are reported here, to the best of our knowledge, for the first time. HNRs of three levels of hydrogenation (20.6, 29.0, and 40.6 mol%) were…
<div class="htmlview paragraph">In response to the emissions standards for diesel engines, it is essential to have separate aftertreatment devices for controlling the specific tailpipe emissions like HC, CO, NO<sub>x</sub>, and particulate matter. An advanced diesel exhaust aftertreatment system cons…
Oxygen octahedral rotations are the most common phase transitions in perovskite crystal structures. Here we show that the color symmetry of such pure elastic distortions is isomorphic to magnetic point groups, which allows their probing through distinguishing polar versus magnetic symmetry. We demonstrate this isomorp…
Abstract We have calculated the stopping power of Al, Si, Ni and Cu for swift H and He ion beams. Furthermore, the energy loss straggling corresponding to Ni is also evaluated. The dielectric formalism is used combined with the MELF‐GOS method, which describes the energy loss function of the target by a linear combina…
We describe elastic electron scattering data at high momentum transfer (between ≈20 and ≈40 au) from methane and Xe. Under these conditions there is a significant recoil energy transferred to the target and electrons scattered elastically from methane are separated into two peaks: one due to electrons scattered from c…
Multiple martensitic transformation peaks were observed from differential scanning calorimetry curves in aged Mn50Ni25Ga25 alloys in which transformation temperature varied with aging temperature. The magnetization and coercivity were enhanced as a result of aging above magnetic transition temperature. A maximum magne…
Monte Carlo transport calculations of dose point kernels (DPKs) and depth dose profiles (DDPs) in both the vapor and liquid phases of water are presented for electrons with initial energy between 10 keV and 1 MeV. The results are obtained by the MC4 code using three different implementations of the condensed-history t…
The results of experimental and theoretical studies on elastic-electron scattering by indium atom are presented. The measurements are performed at incident electron energies of ${E}_{0}=10$, 20, 40, 60, 80, and 100 eV within the scattering angles ranging from $10\ifmmode^\circ\else\textdegree\fi{}$ to $150\ifmmode^\ci…
Joining the fold: Micrometer-long and nanometer-thin fibers of four-helix bundles are formed by the folding-mediated assembly of disulfide-linked helix–loop–helix polypeptides (see picture). Fibers form both as a result of heteroassociation at neutral pH and homoassociation at acidic pH values. The heteroassociated fi…
Two-dimensional simulations of the coarsening process of the isotropic/smectic-A phase transition are presented using a high-order Landau–de Gennes-type free energy model. Defect annihilation laws for smectic disclinations, elementary dislocations and total dislocation content are determined. The computed evolution of…
We report on an approach for photopyroelectric calorimetry enabling a frequency dependence detection of the specific heat and of the latent heat exchanged over first order transitions. It has been applied to the nematic-isotropic transition of 4-n-octyl-4′-cyanobiphenyl liquid crystal confined in a silica nanoparticle…
Electronic phase diagram has been derived for the Prussian-Blue-type cyano-bridged transition-metal compound, ${\text{Na}}_{0.84\ensuremath{-}\ensuremath{\delta}}\text{Co}{[\text{Fe}{(\text{CN})}_{6}]}_{0.71}\ensuremath{\cdot}3.8{\text{H}}_{2}\text{O}$ $(0.0\ensuremath{\le}\ensuremath{\delta}\ensuremath{\le}0.61)$, as…
Diamagnetic susceptibility measurements under high hydrostatic pressure (up to 1.03 GPa) were carried out on a newly discovered Fe-based superconductor LaO 1- x F x FeAs ( x =0.11). The transition temperature T C , defined as a point at the maximum slope of superconducting transition, was enhanced almost linearly by h…