Materials Literature
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Titration of F-actin with calponin causes the formation of two types of complexes. One, at saturation, contains a lower ratio of calponin to actin (0.5:1) and is insoluble at physiological ionic strength. The another is soluble, with a higher ratio of calponin to actin (1:1). Electron microscopy revealed that the form…
We present theoretical results for the electronic structure of graphite using a full-potential linear muffin-tin-orbital method. The calculations are performed at ambient pressure and at hydrostatic pressures of 5 and 10 GPa. Our ambient pressure results are in agreement with recent independent calculations as well as…
Expitaxial ferroelectric BaTiO3 thin films have been grown on (001) MgO and MgO-buffered (001) GaAs substrates by pulsed laser deposition to explore the effect of substrate lattice parameter. X-ray-diffraction studies showed that the BaTiO3 films on both MgO single-crystal substrates and MgO-buffered (001) GaAs substr…
Carbon nitride thin films on Si(100), with N concentrations ranging from 37% to 45% have been synthesized by pulsed laser ablation of graphite under a low-energy nitrogen-ion-beam bombardment. High-energy non-Rutherford backscattering has been employed to measure the atomic ratio of N to C in the films obtained. Elect…
It is shown that a pair of hexagonal dislocation structures can be used as a basis for understanding the herringbone pattern and the node networks that have been observed in the structure of several (111) metal surfaces and overlayers. The hexagons are composed of the dissociation patterns of perfect edge dislocations…
The electrical transport properties of simultaneously deposited, B-doped homoepitaxial and polycrystalline diamond thin films have been evaluated by Hall-effect and resistivity measurements over a temperature range of 80–600 K. The same films were later characterized by scanning electron microscopy, secondary-ion-mass…
The structure and electronic properties of bare and H-terminated C(100)-2\ifmmode\times\else\texttimes\fi{}1 surfaces have been studied by ab initio molecular dynamics. Stable 2\ifmmode\times\else\texttimes\fi{}1 structures were found for both clean and monohydride-terminated surfaces. The 1\ifmmode\times\else\texttim…
The infrared-absorption spectra of silicon dioxide have been studied for many years and most of the peaks have been identified. During the investigation of silicon dioxide deposited by the liquid-phase-deposition technique, an interesting phenomenon was observed. It was found that the intensity ratio between the side…
The spontaneous polarization and electrostatic potential in ferroelectric films with domain structures have been calculated based on phenomenological theory. The polarization is reduced at the film surface due to a depolarizing field. The domain width, free energy, and Curie temperature as functions of film thickness…
The study of the formation of Sulfur Hexafluoride (SF6) dissociation products under point to plane corona discharges was carried out at PSF6=300 kPa using different discharges production conditions (50 Hz ac voltage, dc negative polarity voltage, mean discharge current intensity Ī varying between 2 and 45 μA for dc n…
We report optical measurements of ${\mathrm{NdNiO}}_{3}$ that undergo a phase transition from a paramagnetic metal to an antiferromagnetic insulator at 200 K (=${\mathit{T}}_{\mathit{c}}$). The opening of a charge gap is observed in the optical conductivity spectrum [\ensuremath{\sigma}(\ensuremath{\omega})] below ${\…
The quantum-confinement effect is demonstrated in the luminescence of the ${\mathrm{CsPbCl}}_{3}$-like aggregated phase in ${\mathrm{Pb}}^{2+}$-doped CsCl single crystals. Namely, microscopic excitonic superradiance is considered to explain the observed picosecond decay kinetics of the aggregated-phase emission band a…
We report the first experimental observation of two chemisorption states for molecular oxygen on a TiO2(110) surface containing anion vacancy sites. The first molecular species can be photoactivated to oxidize coadsorbed CO to CO2 (α channel) and undergoes slow photodesorption. The second molecular oxygen species only…
Passive chemical-vapor-deposited diamond layers have the potential to improve thermal conduction in electronic microstructures because of their high thermal conductivities. The thermal resistances for conduction normal to the boundaries of diamond layers, which must be small in order to realize this potential, have no…
The nature of an UV cathodoluminescence band, which can appear in both boron-doped high-pressure high-temperature (HPHT) synthetic diamond and boron-doped diamond grown by chemical-vapor-deposition (CVD) techniques, is investigated. The band has a peak energy at 4.6 eV (270 nm), a full width at half-maximum of ∼0.4 eV…
Recently, it has been shown that, upon cooling, disordered Pb(Sc1/2Ta1/2)O3 ceramics transform spontaneously from a relaxor state to a ferroelectric state when processed in a manner that suppresses lead vacancies. If lead vacancies are present, the spontaneous ferroelectric transition is suppressed and the ceramics ex…
Angle-resolved ultraviolet-photoelectron spectroscopy and angle-resolved secondary-electron emission spectroscopy have been carried out for a film of single-crystalline hexagonal boron nitride (h-BN) formed on the Ni(111) surface to investigate both the valence- and conduction-band structures. The thickness of the fil…
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Abstract Impact properties of perlite‐filled high‐density polyethylene (HDPE) composites were studied with the Charpy method by using both notched and unnotched samples. γ‐Aminopropyltriethoxy silane (γ‐APS, A‐1100) was used as a silane coupling agent to improve the interfacial adhesion. The influences of the molecula…
Abstract Blends of a PPO–PS alloy with a liquid crystalline polymer have been studied for their dynamic properties, rheology, mechanical properties, and morphology. This work is an extension of our previous work on PPO/LCP blends. The addition of the LCP to the PPO–PS alloy resulted in a marked reduction in the viscos…