Materials Literature
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In dynamical simulations of coarse-grained models of soft matter in a solvent a considerable amount of the total simulation time is generically spent on updating the solvent particles, although their dynamics is in most cases not of primary interest. In order to speed up such simulations and as a consequence allow to…
We develop a series of propensity rules for interpreting Inelastic Electron Tunneling (IET) spectra of single-molecule transport junctions. IETS has no selection rules, such as those seen in optical, infrared and Raman spectra, because IETS features arise not from the field-dipole interaction characterizing these othe…
Filling of single-wall carbon nanotubes with C59N azafullerene derivatives is reported from toluene solvent at ambient temperature. The filling is characterized by high resolution transmission electron microscopy and Raman spectroscopy. The filling efficiency is the same as for C60 fullerenes and the tube-azafullerene…
Polycrystalline AgnPbmSbTem+2n thermoelectric materials, whose compositions can be described as Ag0.8Pb18+xSbTe20 were prepared using a combined process of mechanical alloying and spark plasma sintering. Electric properties of the sintered samples with different Pb contents were measured from room temperature to 700K.…
Sodium carboxymethylcellulose, an etherified derivative of cellulose, has been found to realize stable aqueous dispersion of single-wall carbon nanotubes (SWNTs) that is twenty times more concentrated than when a surfactant is used under the same condition. The dispersion as well as thin films prepared from it exhibit…
Epitaxial films of a deep-ultraviolet transparent oxide semiconductor, Ga2O3, were fabricated on α-Al2O3 (0001) substrates by pulsed laser deposition. Four-axes x-ray diffraction measurements revealed that the tin-doped Ga2O3 films have a crystal structure different from any known polymorphs of Ga2O3. Its crystal latt…
We investigate the relative stability and electronic structure of several ${\mathrm{B}}_{x}{\mathrm{C}}_{y}{\mathrm{N}}_{z}$ layered structures using first-principles calculations. The twenty structures we considered are derived from a graphite layer by placing carbon, nitrogen, or boron atoms on each site. Interestin…
The characteristics of heat flow in a coupled magnetic system are studied. The coupled system is composed of a gapped chain and a gapless chain. The system size is assumed to be quite small so that the mean free path is comparable to it. When the parameter set of the temperatures of reservoirs is exchanged, the charac…
Using renormalized field theory, we examine the dynamics of a growing surface, driven by an obliquely incident particle beam. Its projection on the reference (substrate) plane selects a ``parallel'' direction, so that the evolution equation for the surface height becomes anisotropic. The phase diagram of the model is…
We have theoretically designed three families of the half-metallic (HM) antiferromagnets (AFM), namely, $\mathrm{La}A\mathrm{V}\mathrm{Os}{\mathrm{O}}_{6}$, $\mathrm{La}A\mathrm{Mo}\mathrm{Tc}{\mathrm{O}}_{6}$, and $\mathrm{La}A\mathrm{Mo}\mathrm{Re}{\mathrm{O}}_{6}$ ($A=\mathrm{Ca}$,Sr,Ba), based on a systematic ab i…
${\mathrm{GdFe}}_{3}({\mathrm{BO}}_{3}{)}_{4}$ exhibits a structural phase transition at $156\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, antiferromagnetic order of the ${\mathrm{Fe}}^{3+}$ moments at $36\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, followed by a spin reorientation phase transition at $9\phantom{\rule{0.3em}{0ex…
We present a novel model of the effective thermal conductivity for carbon nanotube composites by incorporating the interface thermal resistance with an average polarization theory. The dependence of the effective thermal conductivity on nanotube length, diameter, concentration, and interface thermal resistance has bee…
Abstract This article contains a detailed calorimetric analysis of the multiple melting behavior of poly( L ‐lactic acid) (PLLA) in dependence of crystallization conditions. PLLA crystals formed upon primary crystallization have a greater tendency to reorganize into more stable structures during the heating scan that…
Tubular ZnO microstructural arrays were fabricated by a hydrothermal decomposition method. The dependence of the morphologies on the growth time and temperature was investigated in detail. An experiment was carried out to determine the mechanism of tubular ZnO formation. Our results showed that ZnO microtubes originat…
We consider the system of a quantum well embedded in a planar semiconductor microcavity with a shallow circular mesa patterned on top of the cavity spacer. For this system we develop the linear coupling theory of polaritons. We then compute polariton eigenstates and the corresponding optical spectrum. The theory predi…
It is shown that stationary vortex structures can be excited in a ferrite film. This is the first proposal for creating vortex structures in the important cm and mm wavelength ranges. It is shown that both linear and nonlinear structures can be excited using a three-beam interaction created with circular antennae. The…
Abstract The aim of this study was to investigate the film‐forming ability of the hemicellulose O ‐acetyl‐galactoglucomannan (AcGGM) and to evaluate its potential as a barrier material. The polymer film was evaluated by measurement of its oxygen permeability (Ox‐Tran® Mocon), thermal properties (differential scanning…
Abstract Thermal degradation and biodegradability of poly (lactic acid) (PLA) and poly (lactic acid)/corn starch (PLA/CS) composites with and without lysine diisocyanate (LDI) were evaluated by thermogravimetric analysis measurement and enzymatic degradation using Proteinase K and burial tests, respectively. Thermal s…
Active-site/surface cooperativity can enhance heterogeneous organic and organometallic catalysis. We review the powerful role of the solid surface in this context for generating local acidity and, as an inner-sphere ligand, for stabilizing immobilized supramolecular assemblies and unsaturated organometallic complexes…
The ability to measure proton exchange rates in tissue using MRI would be very useful for quantitative assessment of magnetization transfer properties, both in conventional MT imaging and in the more recent chemical exchange saturation transfer (CEST) approach. CEST is a new MR contrast mechanism that depends on sever…