Materials Literature
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Abstract Copolymers of 2‐( o ‐chlorophenyl)‐4‐methylene‐1,3‐dioxolane with methyl methacrylate and styrene were synthesized in benzene at 85 °C in the presence of 2,2′‐azobisisobutyronitrile as initiator. The structure of the resulting copolymers was investigated and a polymerization mechanism was proposed. The intrin…
The liquid-crystal molecular order near the rubbed polymer surface is reexamined by the improved torque balance method. The surface azimuthal anchoring strength measured by the improved torque balance method is several times larger than that believed conventionally, considered to be significantly affected by the phase…
Abstract Bing cherries were coated with sodium caseinate‐ or milk protein concentrate‐based edible coatings. Besides the proteins (100 g kg −1 ), the coating formulations also included glycerol (about 300 g kg −1 protein) and either beeswax or a stearic–palmitic acid blend at a concentration of 0, 100 or 300 g lipid p…
A new synthesis of Bi(0) nanoparticles is reported. A low temperature solution phase reduction of BiCl 3 with t -BuONa activated sodium hydride at 65 °C has been successfully used to prepare large quantities of colloidal Bi(0) nanoparticles with a diameter in the range 1.8–3.0 nm. The resulting Bi nanoparticles were c…
This paper analysis and design of a wide input range DC-DC converter is proposed along with a robust power control scheme. The proposed converter and its control is designed to be compatible to a fuel cell power source, which exhibits 2:1 voltage variation as well as a slow transient response. The proposed approach co…
The morphology of thin films of Laponite (Lap) clay elaborated by the evaporation method and spin-coating technique was analyzed by atomic force microscopy and scanning electron microscopy, indicating a better quality film for the latter procedure. Rhodamine 6G (R6G) laser dye was intercalated into these films by ion…
The structure and energetics of LiBH 4 and its surfaces have been studied using the density functional theory (DFT) plane-wave method. The DFT relaxed bulk LiBH 4 structure is in agreement with the synchrotron X-ray diffraction results. Four low-index surfaces, (100), (010), (001), and (101), have been created from th…
The generalized stacking faults of Al, Pd, Pt, Ir, and Rh are investigated by a parametrized tight-binding potential. The stacking-fault energies (SFEs) are calculated to be in good agreement with experimental data, except for Al. More important, it is found that the SFE of Pt may be reduced by $14%$ by atom relaxatio…
A bicyclic trisilane unit affords all-anti peralkylated pentasilane with dihedral angles ω > 178°. Its UV and MCD spectra as well as the X-ray crystallography of a related compound demonstrate the highly σ-conjugated system due to the rigidity of the silicon chain conformation.
This paper describes a simple solution route to ZnS nanotubes assisted by CNTs and to ZnS hollow nanospheres by templating with in situ generated bubbles at low temperature. Two types of nanotube exist. One has two open ends with a very thin wall; the other has a sealed end with a thicker wall. The hollow nanospheres…
In this paper after a literature survey in which we describe previous development of the theory and the experimental work to prove the theories we discuss the so-called safety diagram and practical values of the relevant parameters in laboratory and plant equipment. We explore when operating conditions are inherently…
A variable-focus lens is made with one or two liquid-crystal layers and a glass lens. The lens has an aperture near that of the glass lens, and its focal length is electrically changeable from that of the glass lens. The principle is described, and the lens is demonstrated experimentally.
A hydrothermal processing route was used to produce anisotropic submicrometer particles of potassium niobate-tantalates and pure potassium niobate. Piezoelectric activity, switching polarization, and piezoelectric hysteresis loops were observed in these ferroelectric perovskite nanorods by means of AFM assisted detect…
A new phenomenon is theoretically predicted, namely, that solid-solid transformation with a relatively large transformation strain can occur through virtual melting along the interface at temperatures significantly (more than 100 K) below the melting temperature. The energy of elastic stresses, induced by transformati…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTWater Ultrarepellency Induced by Nanocolumnar ZnO SurfaceXin-Tong Zhang, Osamu Sato, and Akira FujishimaView Author Information Kanagawa Academy of Science and Technology, KSP Building West 614, 3-2-1 Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa 213-0012, Japan, and Institute of…
The atomic and electronic structures of $\text{Au}∕{\text{TiO}}_{2}(110)$ systems have been investigated theoretically based on the density-functional theory. We have examined Au adsorption on three types of ${\text{TiO}}_{2}(110)$ surfaces with different stoichiometry and defects; the stoichiometric surface, the surf…
The thermal conductivities of three types of single-wall carbon nanotubes are studied using the homogeneous non-equilibrium Green–Kubo method based on the Brenner potential. The thermal conductivity of a carbon nanotube is found to have dependence on its chirality. The thermal conductivities of three types of nanotube…
Two-Dimensional Ferroelectricity in a Single-Atom Adsorbed BiI 3 Monolayer ,
We report a detailed experimental and theoretical study on the electronic and optical properties of highly boron-substituted (up to $15\phantom{\rule{0.3em}{0ex}}\text{at.}%$) single-wall carbon nanotubes. Core-level electron energy-loss spectroscopy reveals that the boron incorporates into the lattice structure of th…
Abstract Mechanical properties and thermal and structural changes of poly(vinyl chloride) (PVC)/wood sawdust composites were assessed with respect to the effect of moisture content, varying from 0.33 to 3.00 % by weight in the composite, for three different wood sawdust contents. The swell ratio and texture characteri…