Materials Literature
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We report a transient lateral photoeffect (LPE) in thin metallic Co films deposited on n-type Si substrates with native SiO(2) surfaces. Under the nonuniform irradiation of a laser beam, the lateral phtovoltage (LPV) shows high sensitivity to the laser position in the metal film plane. This effect can be interpreted b…
Light membranes composed of single-walled carbon nanotubes (SWNTs) can serve as efficient nanoscale vessels for encapsulation of tetrafluoromethane at 300 K and operating external pressure of 1 bar. We use grand canonical Monte Carlo simulation for modeling of CF4 encapsulation at 300 K and pressures up to 2 bar. We f…
The temperature dependence of the birefringence above T c in high quality BaTiO 3 single crystals has been measured with very high accuracy. On the basis of literature data, the behaviour of the anomalous birefringence can be explained by the existence of polar clusters (microregions/nanoregions) connected with correl…
The self-assembly, the molecular dynamics, and the kinetics of structure formation are studied in dipole-functionalized hexabenzocoronene (HBC) derivatives. Dipole substitution destabilizes the columnar crystalline phase except for the dimethoxy- and monoethynyl-substituted HBCs that undergo a reversible transformatio…
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High-Quality Carbon Nanotube Growth at Low Temperature by Pulse-Excited Remote Plasma Chemical Vapor Deposition, Yamazaki, Yuichi, Sakuma, Naoshi, Katagiri, Masayuki, Suzuki, Mariko, Sakai, Tadashi, Sato, Shintaro, Nihei, Mizuhisa, Awano, Yuji
In this paper, the mechanical properties, such as the axial and radial Young’s moduli, shear moduli, buckling loads and natural frequencies, of single-walled carbon nanotubes, are estimated by a finite element approach. Each carbon nanotube is simulated as a frame-like structure and the primary bonds between two neare…
The possibilities of Fisher’s model development and generalization are considered, as this model in its classical form contradicts some experimental results. Particularly, it does not explain such a phenomenon, observed in Mössbauer studies, as the transfer of grain-boundary diffusing atoms into near-boundary crystall…
Titanium alloys comprise a versatile class of biomedical materials. Among them, β- titanium alloy is one of the most promising metallic materials for biomaterial applications thanks to their high mechanical strength, good corrosion resistance and excellent biocompatibility. This study purported to analyze the phase st…
The ${E}_{33}$ and ${E}_{44}$ optical transitions of small diameter $(0.7--1.2\phantom{\rule{0.3em}{0ex}}\mathrm{nm})$ semiconducting single-walled carbon nanotubes are probed using deep blue $(415--465\phantom{\rule{0.3em}{0ex}}\mathrm{nm})$ resonance Raman spectroscopy and photoluminescence excitation spectroscopy i…
Electroless gold island thin films are formed by galvanic replacement of silver reduced onto a tin-sensitized silica surface. A novel approach to create nanoparticle ensembles with tunable particle dimensions, densities, and distributions by thermal transformation of these electroless gold island thin films is present…
We describe a novel and simple electrolyte-induced fractionation method to separate a polydisperse water-soluble gold nanocluster (Au NC) product. Different particle sizes of Au NC fractions can be easily centrifuged down as a function of the electrolyte concentration or lipophilicity of the solution. The changes in t…
Geometry optimization, singlet-triplet energy gap, and electronic absorption spectra calculation of complexes formed by Mg ion and porphyrin, porphyrazin, chlorine, bacteriochlorine, texaphyrin, phthalocyanine, naphthalocyanine, and anthracocyanine ligands have been carried out to elucidate their potentiality as photo…
We have investigated the electrochemical interface between diamond electrodes and aqueous electrolytes using electrochemical techniques such as cyclic voltammetry and ac impedance spectroscopy. High-quality CVD-grown boron-doped polycrystalline diamond electrodes and IIa single crystalline natural diamond electrodes h…
The crystal structure of Sn 3 P 4, a long-known tin phosphide, has been determined. It crystallizes in the trigonal space group R 3̄ m with unit-cell parameters a = 4.4315(1) Å and c = 28.393(1) Å ( Z = 3). The crystal structure of Sn 3 P 4 is disordered. It consists of alternating layers of phosphorus and tin atoms t…
The adsorbed species formed from the nitrate ion were examined using surface-enhanced infrared absorption spectroscopy (SEIRAS). The main band was observed at 1547-1568 cm-1 at 0.2 V in 0.01 M NaNO3 + 0.1 M HClO4. Although this band is close to that assigned to the adsorbed NO in the literature, it is assigned to the…
Bond paths of maximum electron density spanning O-O edges shared between equivalent or quasiequivalent MOn (n > 4) coordination polyhedra are not uncommon electron density features displayed by silicates. On the basis of the positive values for the local electronic energy density, H(rc), at the bond critical points, r…
[Fe(NH2trz)3]SnF6n x H2O (NH(2)trz=4-amino-1,2,4-triazole; n=1 (1), n=0.5 (2)) are new 1D spin-crossover coordination polymers. Compound 2 exhibits an incomplete spin transition centred at around 210 K with a thermal hysteresis loop approximately 16 K wide. The spin transition of 2 was detected by the Mössbauer resona…
A series of azobenzene-containing isotropic/nematic/isotropic liquid crystal (LC) triblock copolymers (PBMA- b -PMAazo444- b -PBMA) with different block ratios was synthesized by atom transfer radical polymerization (ATRP). The central block PMAazo444 is an azobenzene-containing side-on nematic liquid crystalline poly…
The electron-electron interactions effects on the shape of the Fermi surface of doped graphene are investigated. The actual discrete nature of the lattice is fully taken into account. A $\ensuremath{\pi}$-band tight-binding model, with nearest-neighbor hopping integrals, is considered. We calculate the self-energy cor…