Materials Literature
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The temporal behavior of naturally produced dust parameters (radius and density) and plasma parameters (electron temperature and ion flux) was investigated in radio frequency SiH4/H2/Ar plasmas. As a result, the electron temperature and ion flux were shown to be strongly correlated with the three-step dust growth patt…
This work reports on thermal characterization of SOI (silicon on insulator) CMOS (complementary metal oxide semiconductor) MEMS (micro electro mechanical system) gas sensors using a thermoreflectance (TR) thermography system. The sensors were fabricated in a CMOS foundry and the micro hot-plate structures were created…
The present review is intended to point the readers’ attention to the important subject of calcium orthophosphate bioceramics. Calcium orthophosphates by one-selves appear to be of a special significance for the human beings because they represent the inorganic part of calcified tissues of mammals. Therefore, many typ…
OBJECTIVES: To investigate the influence of thermal history on the physical behavior of poly(ethylene glycol) (PEG), commonly used as a pharmaceutical excipient. MATERIALS AND METHODS: Rheological investigations together with SEM imaging and solid state analysis by XRPD and DSC were used to characterize PEG as startin…
Electronic excitations in linear chains and icosahedra clusters of gold atoms have been studied using an approximate version of time-dependent density functional theory based on the extended Hückel tight-binding method. The formation and development of two longitudinal collective resonances in the absorption spectra w…
Nematic liquid crystal alignment capabilities and electro-optical performance characteristics have first been embodied in a ZrO2 layer using ion-beam irradiation. The study demonstrates that liquid crystal layers can be aligned homogeneously as a function of the incident angle of the ion beam device, which causes a un…
Transition metal carbides exhibit a variety of interesting material properties, including electrochemical stability. When combined with precious metals, Ta and W carbides have shown promise as fuel cell electrode materials; yet, the phase behavior of these precious metal−carbide systems is largely unexplored. We inves…
We report the experimental determination of the threshold energy for filling the B+ induced charge traps in SiO2 near the Si/SiO2 interface, using a two-color pump-probe approach involving internal photoemission and second harmonic generation. The threshold photon energy for filling the B+ induced charge trap is 2.61…
Abstract The results of dielectric studies in semicrystalline poly (butylene succinate‐co‐butylene adipate) (PBSA) by means of dielectric relaxation spectroscopy from 163 to 353 K and in the frequency range of 0.056–17,800 Hz are reported. The subglass β process is found to follow an Arrhenius temperature dependence,…
Templatierung in flüssigem Ammoniak: Die aus Cellulose/NH4SCN in NH3 gebildete flüssigkristalline Phase wurde genutzt, um erstmals poröse Materialien durch Templatierung in flüssigem Ammoniak herzustellen. Porosität, Oberfläche und Morphologie der Materialien lassen sich über das Verhältnis der Reaktionspartner modifi…
The bulk polycrystalline sample FeSe1/2Te1/2 is synthesized via the solid state reaction route in an evacuated, sealed quartz tube at 750°C. The presence of superconductivity is confirmed through magnetization/thermoelectric/resistivity studies. It is found that the superconducting transition temperature (Tc) is aroun…
Abstract Under atmospheric pressure, homogeneous non‐equilibrium cold plasma was generated stably by high voltage pulsed power (1 kV, 20 kHz) excitation of He and O2 gases. By feeding Zn‐MOPD (C18H30O6Zn) into this plasma with He carrier gas, transparent flat ZnO films about 240 nm thick were successfully fabricated o…
The electronic scattering rates in metals after ultrashort pulsed laser heating can be drastically different than those predicted from free electron theory. The large electron temperature achieved after ultrashort pulsed absorption and subsequent thermalization can lead to excitation of subconduction band thermal exci…
Dielectric properties of n·CB (n = 5, 6, 7, 8) liquid crystals (LCs) are investigated in the frequency intervals of 50–80, 120–160 GHz, and at 0.6 THz. The measurements are carried out in the millimetre wave range by the resonance method and with use of a reflectometer designed on the basis of a Michelson interferomet…
Herein, I report a DFT study on the bioactive conformation of epothilone A based on the analysis of 92 stable conformations of free and bound epothilone to a reduced model of tubulin receptor. The equilibrium structures and relative energies were studied using B3LYP and X3LYP functionals and the 6-31G(d) standard basi…
In this paper, we will present and discuss our results on the thermal interface resistances of the thermal interface materials based on vertically aligned carbon nanotubes. In this system, the total interface resistance is the sum of thermal resistances created by the contact between the growth surface and the CNTs, t…
The solvent vapor treatment (SVT) for poly(3-hexylthiophene) (PAT6) films and its application to interpenetrating heterojunction organic solar cells have been studied. It was found that SVT could improve the crystallinity and electrical characteristics of the PAT6 films. We fabricated organic solar cells with an inter…
The sulfate and Al3+ in ettringite (Ca6Al2(SO4)3(OH)12 · 26H2O) can substitute for other oxyanions such as chromate ions (CrO42−) and cations such as Cr3+, respectively. Ettringite synthesis in the presence of CrO42− or Cr3+ was attempted by adding solid Ca(OH)2 to an Al2(SO4)3 solution to examine the behavior of thes…
We investigate the effect of the arsenic source (As2 and As4) on the optical properties of InGaAs quantum rods (QRs) grown by molecular beam epitaxy. Owing to differences in the In and Ga diffusion lengths under As2 and As4 fluxes, photoluminescence (PL) peak energies of the QR samples depend strongly on the As source…
We report the structural instability of TiO2 nanotubes subjected to treatment with ammonium hydroxide (NH4OH) solution prior to calcination at elevated temperatures. The nanotubes were disintegrated into nanoparticles and the tubular morphology was vanished after 2 h of calcination at 500 °C. High-resolution transmiss…