Materials Literature
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In the 21st century, soft materials will become more important as functional materials because of their dynamic nature. Although soft materials are not as highly durable as hard materials, such as metals, ceramics, and engineering plastics, they can respond well to stimuli and the environment. The introduction of orde…
Simple grating of perforated strips is considered. Such a grating with one slot over the period, provides rejection frequency response. The grating with two different slots over the period provides frequency response with two rejection resonances. Simple and strict dependences of quality-factor and location of the res…
The recently introduced concept of waveguide miniaturization using a uniaxial negative permeability metamaterial is extended to the design of a miniaturized open-ended radiator. The reflection coefficient and radiation pattern of such an antenna are investigated numerically and experimentally. The experimental prototy…
Abstract For Abstract see ChemInform Abstract in Full Text.
Interesting applications of metamaterials have been proposed in the recent past, and in several cases the use of double-negative (DNG) slabs is appealing. Consequently, a detailed analysis of the propagation of electromagnetic fields inside DNG slabs is critical, and suitable numerical methods are needed. To this aim,…
Advanced bottom electrode contact (BEC) scheme was successfully developed for fabricating reliable high density 64 Mb PRAM by using ring type contact scheme. This advanced ring type BEC scheme was prepared by depositing very thin TiN films inside a contact hole, and then core dielectrics was uniformly filled into the…
Abstract For Abstract see ChemInform Abstract in Full Text.
The presented paper addresses the optimization of isothermal preferential crystallization for the separation of pure enantiomers from racemic mixtures. For the optimization, a rigorous process model is used. A sequence of stochastic and deterministic minimization algorithms is applied. The initial values of the mass o…
Phase-change memory (PCM) cell is the most promising technology as post-flash nonvolatile memory (NVM). Among the different proposed cell structures, /spl mu/trench allows to simultaneously achieve low programming currents, small cell size, easy tunability and good dimensional control. Aim of this paper is to investig…
Human spindlin1 is a newly screened and identified gene product related to ovarian carcinomas and is highly homologous to mouse spindlin. It is an abundant maternal transcript expressed in the mouse during the transition from oocyte to embryo. Here, the recombinant human spindlin1 has been overexpressed in Escherichia…
Abstract Polyphenylsilsesquioxane (PPSQ) was incorporated into an epoxy resin to prepare organic–inorganic composites, and two strategies were adopted to afford composites with different morphologies. Phase separation induced by polymerization occurred in the physical blending system. However, nanostructured composite…
The electronic conductivity of tri-n-octylphosphineoxide (TOPO)-protected CdSe quantum dots (QDs) was studied at the air-water interface using the Langmuir technique within the context of photochemical and photophysical excitation. It was found that, upon photoirradiation with photon energies higher than that of the a…
Sputtering conditions to produce nearly equiatomic NiTi films were studied. Two heat treatment methods, substrate heating (550 °C) and post-sputter heat treatments (solution heat treatment at 700 °C and precipitation heat treatment at 400 °C), were used to crystallize NiTi films. The NiTi films were analysed for their…
We have monitored the optical luminescence from ZnS nanowires as a function of x-ray energy at the Zn L edge (1022 eV). The x-ray absorption spectrum obtained using the 338 nm, band edge emission as a signal resembles that of the wurtzite form of ZnS, while that obtained using the 430 and 520 nm defect emissions, rese…
The formation of inclusion complexes of hydroxypropyl-beta-cyclodextrin, heptakis(2,6-di-O-methyl)-beta-cyclodextrin and heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin with 5,10,15,20-tetrakis(4-pyridyl)porphyrin (TpyP) has been studied in aqueous buffer solution (phosphate buffer pH = 7 and I = 0.01 M) to give a stru…
The Raman spectra for single-walled carbon nanotubes (SWNTs) at different temperatures are studied. We find that the G peak position shifts to low frequency with increasing temperature. The variation rate of the peak frequency as a function of temperature is a factor of 2–3 larger than the corresponding values for mul…
The first series of triangular cluster complexes of [MCo(2)] (M = Rh, Ir, Ru) with a planar metalladithiolene ring coordinating in the eta(3)-bonding mode were synthesized, and the crystal structures, spectral and electrochemical properties, and thermochromism of these complexes were revealed.
Anisotropic Pr-Fe-B thin films with perpendicular texture have been prepared by magnetron sputtering and subsequent heat treatment. After crystallization at $873\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, the films deposited at $773\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ show a perpendicular anisotropic texture, due to the…
Light-fastness of anionic oxonol dyes as measured in noncrystalline solid films was markedly improved by introducing 4,4′-bipyridiniums as counter cations.
Abstract For Abstract see ChemInform Abstract in Full Text.