Materials Literature
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Abstract 3,3‐Diphenyl‐3 H ‐naphtho[2,1‐ b ]pyrans linked to one, two, or three thiophene nuclei in different positions of the naphthalene moiety (5, 6, 8, and 9) by a covalent bond have been prepared in good yields. A Suzuki cross‐coupling reaction was used with two possible strategies: chromenization before the coupl…
Radially linked star- block -linear polystyrenes, star-shaped polymers with star-shaped branching at the ends of each arm, were synthesized by the convergent living anionic polymerization method. These novel structurally modified polymers were synthesized by sequential addition of a specific coupling agent, 4-(chlorod…
Most experts agree that it is too early to say how quantum computers will eventually be built, and several nanoscale solid-state schemes are being implemented in a range of materials. Nanofabricated quantum dots can be made in designer configurations, with established technology for controlling interactions and for re…
Systematic results of the photoemission spectra for different core levels such as, Tm 4 p , 5 p and 3 d in the mixed valent Tm-monochalcogenides (TmS, TmSe and TmTe) obtained by both experimentally and theoretically are reported. The effects of the electron–electron correlation due to the interaction between core-hole…
X-ray diffraction study was performed for the atomic arrangements in Pt-rich (87.5 at.%) Cu–Pt alloy with the cubic structure both in the disordered and ordered states using single crystal samples. In the disordered state obtained by quenching from temperatures above 800°C, short-range order (SRO) diffuse scattering i…
Abstract UV radiation was used to graft acrylamide (AA) to jute yarn in order to improve the mechanical properties. The physicomechanical properties of the grafted jute yarn were investigated. A series of solutions of different AA concentrations in methanol along with photoinitiator (Irgacure‐907, 2%) were prepared. T…
Detailed crystal structures and 1H-NMR characteristics of some alkylaminephthalimides, including dendritic polyphthalimides, are reported. These investigations were undertaken in order to obtain a better understanding of the relationship between solid-state supramolecular interactions, their persistence in solution an…
Physical and Barrier Properties of Plasma-Enhanced Chemical Vapor Deposited α-SiC:H Films from Trimethylsilane and Tetramethylsilane, Chiang, Chiu-Chih, Chen, Mao-Chieh, Ko, Chung-Chi, Wu, Zhen-Cheng, Jang, Syun-Ming, Liang, Mong-Song
We propose a generic model for understanding the effect of quenched disorder on charge-ordering in half-doped manganese and cobalt oxides with different crystal structures. Current experimental observations are explained in the light of the global phase diagram of the model.
A hybrid-aligned cell of the smectic A liquid material 8CB gives two stable director configurations, one of which is periodic and gives strong diffraction of light. This photonic lattice director profile arises from "frustration" caused by conflicting constraints imposed by the boundary conditions and the constant amp…
The liquid crystal phases of the Kihara fluid have been studied in computer simulations. The work focuses on the isotropic-nematic-smectic-A triple point region, especially relevant for the understanding of the properties and the design of real mesogens with specific phase diagrams. The Kihara interaction resembles mo…
The crystal structure of form II of isotactic poly(4-methyl-1-pentene) is presented. Samples of isotactic poly(4-methyl-1-pentene) in the pure form II have been obtained by crystallization from tetramethyltin solutions. The crystal structure has been determined by using X-ray powder diffraction data and packing energy…
The band gap, the single-particle energy, and the effective mass are calculated for semiconducting carbon nanotubes in a random-phase approximation within a k · p scheme. The energy gaps are shown to be strongly enhanced due to the Coulomb interaction, while effects on the effective mass along the axis direction are s…
The linear electrooptic coefficients of Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 (PMN–PT) single crystals in the rhombohedral and tetragonal phases were characterized at a wavelength of 632.8 nm. Large electrooptic responses were observed. The tetragonal 0.62PMN–0.38PT single crystals poled along the <001> direction (the sponta…
The influence of molecular mass on the formation of polyelectrolyte multilayers on an oppositely charged surface of a rotating substrate was explored for a combination of strong cationic and anionic polyelectrolytes, such as poly(1-( N -benzylpyridinio-2-yl)ethylene bromide) (PVP-2B) and ι-carrageenan. UV/visible spec…
Abstract Different proportions of starch were blended with poly(β‐hydroxybutyrate)‐ co ‐poly(β‐hydroxyvalerate) (PHB‐V) or poly(ε‐caprolactone) (PCL) by extrusion, and the mechanical (maximum tensile strength, elongation at break and Young's modulus) and thermal properties (by differential scanning calorimetry) were d…
High-quality double-walled carbon nanotube (DWNT) super bundles were selectively grown above a bowl-like cathode by arc discharge in a hydrogen-free atmosphere. These DWNTs can resist high-temperature (up to 720 °C) oxidation in air without additional annealing even after acid treatment, which is due to an in-situ def…
The remarkable feature of electroplated film was grain growth at room temperature and this phenomenon was named `self-annealing'. The driving force of self-annealing was expected as highly increased defect and surface energy, but the exact mechanism was unknown. In this work, residual stress effect on self-annealing w…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTParacrystalline Lattice Distortion in the Near-Surface Region of Melt-Crystallized Polyethylene Films Evaluated by Synchrotron-Sourced Grazing-Incidence X-ray DiffractionHirohiko Yakabe, Sono Sasaki, Osami Sakata, Atsushi Takahara,…
Abstract Regenerated cellulose (RC) films were plasticized with glycerol, glycerin α‐monobutyrate, glycerin α‐monocaproate, glycerin α‐monocaprylate, and glycerin α‐monocaprate. The structure and properties of the films were investigated by using Fourier transform IR, wide‐angle X‐ray diffraction, differential scannin…