Materials Literature
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Ten copolyesters have been synthesized by polycondensation of MPNCCT and different mixtures of diols, such as: BPA + BPC, BPA + BPS, BPA + 1,4-DHA, BPA + Ph, BPA + C, BPA + R, BPA + EG, BPC + Ph, BPC + R, and Ph + 1,4-DHA. All the copolyesters have been characterized by IR spectra, NMR spectra, solubility, density and…
We report the origin of the positive magnetoresistance (MR) occurring in the ZnO conduction layer underneath of the ${\text{Zn}}_{0.88}{\text{Mn}}_{0.12}\text{O}$ magnetic barrier layer. First, $n$-type ${\text{Zn}}_{0.88}{\text{Mn}}_{0.12}\text{O}/\text{ZnO}$ modulation-doped heterostructures were fabricated on ZnO $…
We studied the nonlinear optical properties of ZnO nanorods. ZnO nanorods were deposited by using the electro-deposition method, and these samples were annealed at a temperature of 400 degrees C for 5 hours. The nonlinear absorption properties of ZnO nanorods with two different rod diameters of 500 run and 100 run wer…
Abstract Two phosphorus‐containing acrylates of 1‐oxo‐2,6,7‐trioxa‐1‐phorsphabicyclo[2,2,2]oct‐4‐yl methyl acrylate and (10‐oxo‐10‐hydro‐9‐oxa‐10λ 5 ‐phosphaphenanthrene‐10‐yl) methyl acrylate were free‐radical‐copolymerized with styrene (St). The r 1 reactivity ratio values (related to the novel acrylates) were 0.342…
Based on several force fields (COMPASS, modified TIP3P and SPC/E) high-density amorphous ice is simulated by use of isothermal-isobaric molecular dynamics at a pressure of p approximately 0.3 GPa in the temperature range from 70 to 300 K. Starting at low temperature a large number of heating/cooling cycles are perform…
The effect of electric field on the thermal expansion of the TlGaSe2 ferroelectric-semiconductor with a layer crystalline structure has been investigated. A strong transformation of negative linear expansion coefficient in the layer plane has been observed as a result of the applied electric field. It was concluded th…
Abstract To recover residual rubber from skim natural rubber (SNR) latex, a novel method was developed on the basis of the use of water‐soluble chitosan derivatives. An anionic chitosan derivative, N,O ‐carboxymethyl chitosan (CMCh), and a cationic chitosan derivative, N ‐(2‐hydroxy)propyl‐3‐trimethylammonium chitosan…
Ordered mesoporous materials (OMMs) with well-defined pore sizes (>2 nm) and pore geometries are important in various applications that require fast mass transfer or deal with large molecules. Extensive research has resulted in the discovery of OMMs with three types of mesostructures: (i) bi- or multicontinuous, (ii)…
Micro-Raman mapping with a spatial resolution of micrometer and room-temperature visible photoluminescence (PL) has been carried out on phosphorus-doped hydrogenated nanocrystalline silicon (nc-Si:H) thin films grown by plasma enhanced chemical vapor deposition. Both the thin film uniformity and structural properties,…
We have studied the magnetic, magnetocaloric, and magnetoelastic properties of LaFe11.57Si1.43Bx compounds in the concentration interval 0<x≤1.64 using magnetization and strain gauge techniques. The crystal cell parameters and Curie temperatures were found to increase linearly with increasing B concentrations u…
The multidimensional conformational potential energy hypersurface (PEHS) of cyclic Gly-Gly-Gly (1,4,7-triazonane-2,5,8-trione) was comprehensively investigated at the Hartree-Fock (RHF/6-31G(d)) level of theory. The equilibrium structures, their relative stability, and the transition state (TS) structures involved in…
The sliding clamp proliferating cell nuclear antigen (PCNA) plays vital roles in many aspects of DNA replication and repair in eukaryotic cells and in archaea. Realising the full potential of archaea as a model for PCNA function requires a combination of biochemical and genetic approaches. In order to provide a platfo…
Abstract Surface‐enhanced Raman scattering (SERS) is an extremely powerful tool for the analysis of the composition of bimetallic nanoparticle (BNP) surfaces because of the different adsorption schemes adopted by several molecules on different metals, such as Au and Ag. The preparation of BNPs normally implies a chang…
We study a simple two patch model of globular protein solutions. The model consists of a hard sphere interaction, together with a weak isotropic attraction, decorated with stronger attractive patch-patch interactions. The isotropic and anisotropic attractions are modeled with square well potentials with an interaction…
Abstract The effect of molecular weight of rubber on viscosity and loop tack of rubber‐adhesives were studied using two grades of epoxidized‐natural rubber, i.e., ENR 25 and ENR 50. Coumarone–indene resin, gum rosin, and petro resin were used as tackifiers. Toluene was used as the solvent throughout the experiment. Th…
A new microwave-assisted gel-combustion synthesis in self-propagating mode was developed for the deposition of adhesive metal nanoparticles on ceramic substrates. Pt particles with diameters less than 10 nm uniformly distributed on corundum foams were prepared by the fast and reliable combustion method with no additio…
Magnetic carbon nanotube (CNT) arrays are grown by in situ encapsulation of ferromagnetic iron carbide nanoparticles within the tube walls (see figure). The resulting structures, combining the inherently unique characteristics of aligned and open-ended CNTs with the fact that magnetic functionality is provided from “i…
A new route combining a facile wet-chemical process and spin coating was developed to fabricate a CuI film assembled by hexagonal crystals. Remarkably, such a CuI film displays excellent superhydrophobicity without further modification by low-free-energy materials (thiol or fluoroalkylsilane). The special wettability…
The conventional method for calculating the dielectric tensor for metamaterial relies on finding a transformation from the physical space containing the medium to a virtual electromagnetic space. Such a transformation exists if, and only if, the space is flat, which greatly restricts the way in which we are able to ma…
Abstract The self‐assembly behavior of neat 1,3:2,4‐dibenzylidene‐ D ‐sorbitol (DBS) and DBS/poly(propylene glycol) (PPG) organogels has been investigated by scanning electron microscopy, polarizing optical microscopy, and rheological measurements. DBS molecules are capable of self‐organizing into fibrils and exhibit…