Materials Literature
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We present a class of finite elements for capturing sub-grid localization processes such as shear bands and void sheets. The elements take the form of a double surface and deform in accordance with an arbitrary constitutive law. In particular they allow for the development of displacement and velocity jumps across vol…
Intensive studies have been carried out on controlling the periodicity and alignment of large-scale periodic arrays of carbon nanotubes (CNTs) using plasma-enhanced chemical vapor deposition. Catalytic dots are first prepared by self-assembly of polystyrene spheres on chromium-coated silicon substrates. Preparation pa…
We report true left-handed (LH) behavior in a composite metamaterial consisting of a periodically arranged split ring resonator (SRR) and wire structures. We demonstrate the magnetic resonance of the SRR structure by comparing the transmission spectra of SRRs with those of closed SRRs. We have confirmed experimentally…
We present a comprehensive set of theoretical results for differential, total, and momentum transfer cross sections and Sherman functions for the elastic scattering of electrons by barium and strontium atoms, for the entire angular range and energies below 1 keV. This study extends our method of calculations, already…
Abstract Summary: Here we report about the synthesis of colloidal particles of nematic and smectic liquid‐crystalline polymers. For this purpose mesogen‐containing acrylate monomers were synthesized and polymerized in a special modification of a precipitation polymerization called dispersion polymerization. By variati…
Abstract The synthesis and characterisation of novel liquid crystals which display columnar mesomorphism induced upon complexation of a series of nonmesomorphic hexacatenar 4,4′‐disubstituted 2,2′‐bipyridines ( L n ) are reported. The introduction of different metal centres (Zn, Pd) causes the appearance of mesomorphi…
Vertically aligned carbon nanofibers (CNFs) grown by plasma enhanced chemical vapor deposition (PECVD) were transformed into cone-shaped nanostructures after treatment by argon (Ar) plasma. Significant enhancement of field emission characteristics of the post-treated CNFs has been achieved. Analysis by electron micros…
Abstract The structural and spectroscopic characterisations of fac ‐[Re(phen)(CO) 3 Cl] ( 1 ) (phen = 1,10‐phenanthroline), fac ‐[Re(ephen)(CO) 3 Cl] ( 3 ) [ephen = 5,6‐epoxy‐1,10‐phenanthroline ( 2 )] and ephen are reported. The appearance of weak hydrogen bond networks in the crystal lattice of [Re(ephen)(CO) 3 Cl]…
We study a model colloidal system where particles interact via short-range attractive and long-range repulsive Yukawa potentials. Using the structure factor calculated from the mean-spherical approximation as the input, the kinetic phase diagrams as functions of the attraction depth and the volume fraction are obtaine…
Acetyl triethyl citrate (ATC) was used as a plasticizer for poly(lactic acid) (PLA)/starch blends coupled with maleic anhydride and an initiator of 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane (L101). Elongation of the blend at break was markedly increased when the ATC content was above the 8% loading level, which is…
An in situ doping approach was adopted to synthesize single-crystalline Sn-doped In2O3 [indium tin oxide (ITO)] nanowhiskers. Similar synthesis strategy could be used in the production of various doped metal oxide nanowhiskers. The growth mode of ITO nanowhiskers was discussed based on a self-catalytic vapor–liquid–so…
Photoinduced direct methane coupling proceeded around room temperature over highly dispersed magnesium oxide species on silica, which exhibited fine structure in photoluminescence emission spectra. It was found that increasing the emission intensity tends to give an increase in the photoactivity for this reaction. The…
We report our first principles calculation studies of electronic structure and magnetic properties of the ${\mathrm{Mn}}_{n}$ $(n=4,12)$ single-molecule magnet, i.e., $[{\mathrm{Mn}}_{4}{\mathrm{O}}_{3}\mathrm{Cl}{(\mathrm{OAc})}_{3}{(\mathrm{dbm})}_{3}]$ $(\mathrm{dbmH}=\text{dibenzoyl}\text{\ensuremath{-}}\text{meth…
The magnetic, thermal, and transport properties of ${\mathrm{Na}}_{0.75}\mathrm{Co}{\mathrm{O}}_{2}$ single crystals grown by the floating zone (FZ) method are reported. Magnetic susceptibility, resistivity, magnetoresistance, and heat capacity data from these crystals indicate a bulk phase transition at ${T}_{1}=22\p…
Permeability of tumor vasculature can be a major barrier to successful drug delivery, particularly for high molecular weight agents such as monoclonal antibodies and their diagnostic or therapeutic conjugates. In this study, changes in permeability of SCCVII tumor vessels after radiation treatment were evaluated by dy…
The phase stability and magnetic properties of the half-metal-type Co2Cr1−xFexAl alloy system were investigated. It was found that the occurrence of two-phase separation is unavoidable in a concentration range of less than x=0.4, leading to deviation of the saturation magnetic moments from the generalized Slater–Pauli…
Pure Bi4Ti3O12 ceramics were prepared using the conventional solid-state reaction method and their dielectric properties were investigated. A dielectric loss peak with the relaxation-type characteristic was observed at about 370K at 100Hz frequency. This peak was confirmed to be associated with the migration of oxygen…
We study numerically, by means of the pseudospectral time-domain method, the unique features of imaging by a flat lens made of a left-handed metamaterial that possesses the property of negative refraction. We confirm the earlier finding that a left-handed flat lens can provide near-perfect imaging of a point source an…
A method is proposed for determining the line tension, which is the main physical characteristic of a three-phase contact region, by Monte-Carlo (MC) simulations. The key idea of the proposed method is that if a three-phase equilibrium involves a three-phase contact region, the probability distribution of states of a…
The ambient temperature crystal structures of compounds in the ${\mathrm{Na}}_{x}\mathrm{Co}{\mathrm{O}}_{2}$ family, for $0.34<x\ensuremath{\leqslant}1.0$, determined by powder neutron diffraction, are reported. The structures consist of triangular $\mathrm{Co}{\mathrm{O}}_{2}$ layers with Na ions distributed in i…