Materials Literature
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Poly(D-lactide)s (PDLA) having an end group of trimethoxysilyl (P(x)-Si-(OMe)(3)) or monoethoxydimethylsilyl (P(x)-Si-OEt) group were synthesized to immobilize macromolecular chains of polylactide onto a flat silicon surface by the "grafting onto" mechanism. Both the end-functional PDLAs were efficiently immobilized o…
We investigated nonlinear absorption and photobleaching processes in a liquid-crystal elastomer doped with light-sensitive azobenzene moiety. A conventional one-dimensional holographic grating was recorded in the material with the use of two crossed UV laser beams and the angular dependence of the diffraction efficien…
Transparent conducting aluminum-doped zinc oxide (AZO) films have been prepared on glass substrates by dc magnetron sputtering using ceramic ZnO with 2 wt% Al 2 O 3 target. The mechanism of negative oxygen ion generation on an AZO target surface and its influence on the conductivity of films were discussed. The negati…
The enhancement of weak Raman signals has been challenged to obtain high-quality signals of surface-enhanced Raman scattering (SERS). By employing the Parkinson's disease-related protein of α-synuclein, we introduce SERS-active gold nanoparticles (AuNPs) individually isolated with an ultrathin α-synuclein shell and th…
We review the differences between bubble formation in champagne and other carbonated drinks, and stout beers which contain a mixture of dissolved nitrogen and carbon dioxide. The presence of dissolved nitrogen in stout beers gives them several properties of interest to connoisseurs and physicists. These remarkable pro…
Two Phase Flow, Phase Change and Numerical Modeling 312 melting temperature of material of the heating surface. Therefore, how many bubbles are generated on the surface and how frequently bubbles are departed from the surface are important parameters in the nucleate boiling heat transfer. Obviously, there are two-phas…
Sulfur, so good: Crystallization of phosphorus polysulfides catena-P2S7 is enhanced by catalytic amounts of anhydrous FeCl3 (see scheme, P blue, S yellow). The formation of polysulfide bridges is observed which is typical for vulcanization reactions.
Divalent transition metal oxide doping of lead-free (K,Na,Li)(Nb,Ta,Sb)O 3 piezoceramics is studied. Two different behaviors were observed independently of the doping metal: at low concentrations, the tetragonal structure is preserved, while at a high doping level, the material becomes orthorhombic. For any given dopi…
Results from first-principles investigations of the energetical, structural, electronic, and vibrational properties of model structures probing the metal-rich region of the lanthanum-hydrogen system, i.e., the region of the solid solution of hydrogen in lanthanum, are presented. We have studied the site preference and…
The microwave-synthesized zinc-oxide (ZnO) nanonorods of average length of ∼ 1500 nm and diameter ∼ 100 nm were irradiated with 6.5 meV electrons. From sample to sample, the electron fluence was varied over the range 5×1014 to 2.5×1015 e-cm−2. The pre- and post-electron-irradiated ZnO nanorods were characterized by X-…
The chirality organization of polyaniline-unit molecules was achieved by the introduction of amino acid pendant groups through intramolecular hydrogen bonding, which plays an important role in the stabilization of the chirality-organized redox species. Another interesting feature of the synthesized polyaniline-unit mo…
A highly water-soluble antihypertensive drug, metoprolol tartrate (MT), was selected as a model drug for preparation of multi-walled carbon nanotubes (MWCNTs)-impregnated ethyl cellulose (EC) microspheres. The present investigation was aimed to increase encapsulation efficiency of MT with excellent adsorbent propertie…
We report a pulse electron spin resonance study of binuclear Mn molecular complexes whose magnetic properties are controlled by the ligand substitution. An electron spin echo in these complexes in the solid phase and also diluted in a frozen solution matrix was detected, and the spin decoherence time ${T}_{2}$ of Mn s…
We investigate thermally driven electronic transport through a single-molecule magnet (SMM) coupled to a ferromagnetic (FM) lead and a normal-metallic lead. Due to the thermal spin-transfer torque effect, the orientation of the SMM’s spin can be manipulated by temperature bias or gate voltage to be parallel or antipar…
Abstract Thin‐film transistors (TFTs) using aligned network of semiconductor‐enriched single‐wall carbon nanotubes (s‐SWCNTs) were fabricated on a SiO2/Si substrate. The aligned thin film was prepared by N2 blow in the drying process using as separated s‐SWCNT solution prepared by the agarose gel chromatography. We de…
The fabrication technology for emerging printed and flexible electronics is currently suboptimal. Although inkjet technology is a powerful tool for producing single-walled carbon nanotube (SWCNT) film transistors, inkjet printing at moderate temperatures (<100 °C) of complementary logic gates that are suitable for pla…
We fabricated a spin transistor structure that consisted of two magnetic tunnel junctions with half-metallic Co2MnSi electrodes. Transient responses were observed by applying pulsing gate voltage. Output currents were controlled by both the source-drain and gate voltage and magnetic configuration of the Co2MnSi. The d…
Suitable porous electrode design may play a significant role in the performance enhancement of solid oxide fuel cells (SOFCs). In this paper a genetic algorithm optimization method is employed to design electrodes based on a 2D planar SOFC model development. The objective is to find suitable porosities and particle si…
Abstract Thermal annealing of FeCp2 filled SWCNT yields DWCNT via a catalytic reaction. The annealing time and temperature allow controlling the doping level. We present an in situ experimental approach to study the dynamics of the transformation of FeCp2 filled SWCNT to doped DWCNT. A frequency doubled Nd/YAG laser w…
Phase transition behaviour of La-modified sodium bismuth titanate ceramics [(Na0.5Bi0.5)1−1.5x V0.5x La x ]TiO3 (NBLT) was investigated. The two anomalies in εr(T) and DSC analysis indicated that lower temperature phase transitions below 200 °C became pronounced with La additions. The polarization relaxation of εr(T)…