Materials Literature
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Abstract The results of the estimation of the viscosity for Ag – In and In–Sb liquid alloys are presented in this paper. Different theoretical models for viscosity determination, according to the Moelwyn–Hughes, Iida –Ueda –Morita, Kozlov– Romanov– Petrov, Hirai, Seetharaman – DuSichen and Kaptay, have been applied in…
The role of disorder in controlling diffusivity and mobility of charge-carriers in the hopping regime of transport within a potential landscape has become especially significant for organic semiconductors. The temperature and field dependence of diffusivity (D) and mobility (μ) of injected charge-carriers have been si…
Two new coordination polymers, [Cd(2,2′-bpdc)(bmib)0.5 (H2O)]n (1) and [Cd2(3,4′-bpdc)2 (bmib) (H2O)]n (2), have been synthesized via hydrothermal reactions of Cd2+with the two isomeric carboxylate (2,2′-bpdc = biphenyl -2,2′-dicarboxylate and 3,4′-bpdc = biphenyl-3,4′- dicarboxylate) and one imidazole-containing (bmi…
Mechanical faults on woolen fabrics are often the result of insufficient mechanical properties of wool warp that must be achieved to ensure smooth process of weaving. Conventional sizing is not appropriate for the preparation of wool yarn for weaving because of sensitivity of wool fibers to high temperatures. For that…
We investigated the relative coverage of an alcohol adsorbed on silicon dioxide (SiO 2 ) film by angle resolved X-ray photoelectron spectroscopy (ARXPS). We found that both Si 2p (103.3 eV; Si -O) and O 1s (532.5 eV; Si- O ) spectra decreased in order of IPA > ethanol > methanol through all takeoff angles. In addition…
By introducing antibacterial drug pipemidic acid into octamolybdates, two new compounds, (HPPA)4[Mo8O26] 2H2O (1) and [Ni2(PPA)2(H2O)4] [Mo8O26] 3H2O (2) (PPA = 8-ethyl-5,8-dihydro-5-oxo-2-(1-piperazinyl)pyrido(2,3-d)pyrimidine-6-carboxylic acid), have been synthesized and characterized by physical methods. Single-cry…
We presented a theoretical study on the detailed reaction mechanism and kinetics of the CN radical with the HNCS molecule. The barrierless minimum energy path and the most favorable entrance channel have been determined by constructing a two-dimensional potential energy surface of the C atom of CN attacking the HNCS m…
Positron annihilation spectroscopy is employed to estimate the size of subnanometer-scale open spaces in insulating materials. In most cases, the size is estimated from the lifetime of long-lived ortho-positronium (o-Ps) by pickoff annihilation using a simplified model. However, reactions of Ps with surrounding electr…
Semiconductor alloys, for example group III metal nitrides and phosphides, such as AxB1-xN or ANxP1−x (where A,B metal atoms: Al, In, Ga) have been materials of interest for optoelectronic applications (light emitting diodes, lasers, detectors) for more then two decades. The potential possibility of tuning (via variat…
A novel and facile activation process for electroless nickel deposition was developed. The semi‐interpenetrating polymer network hydrogel biofilm was used to functionalize the inert poly(vinyl chloride) (PVC) surface, and then Cu nanoparticles, which can initial the subsequent electroless nickel deposition successfull…
While NOx storage and reduction is periodically operated, steady‐state studies have been widely carried out to investigate the involved reaction mechanisms and effects of operating parameters. Due to the complex reaction chemistry and its coupling with transport phenomena, multiplicity may exist. A steady‐state monoli…
Synthesis of deoxyribonucleic acid (DNA) - was cetyltrimethylammonium (CTMA) - sea buckthorn extract (SBE) at different concentrations is decribed. The complexes were processed into good optical quality thin films by spin coating on different substrates such as: glass, silica and ITO covered glass substrates. SBE cont…
Internal quantum efficiency (IQE) and piezoelectric field (PZ) in InGaN light-emitting diodes (LEDs) were analyzed that were grown on a truncated pyramid (TP)- and a pyramid (P)-shaped pattern sapphire substrates. Lower flat-band voltage was measured at -8 V in the P-LED compared with the TP-LED (-12 V) that showed a…
By controlling the concentration of the reaction system, two zinc(II) complexes, [Zn2(tsgluO)2(phen)2]n (1) and [Zn2(tsgluO)2(phen)2(H2O)2] (2) (H2tsgluO = N-tosyl-L-glutamic acid, phen = 1,10-phenanthroline), have been synthesized under hydrothermal conditions and characterized by elemental analysis, infrared spectra…
We study the behavior of refracted angle for k-vector at the interface of uniaxial anisotropic media in the case of nanosphere dispersed liquid crystal (NDLC) matematerial. Finite Element (FE) calculations (COMSOL Multiphysics) are used to trace the propagation of the electromagnetic wave. Preliminary results on the i…
A major challenge for cell-based therapy is the inability to systemically target a large quantity of viable cells with high efficiency to tissues of interest following intravenous or intraarterial infusion. Consequently, increasing cell homing is currently studied as a strategy to improve cell therapy. Cell rolling on…
Five new optically active poly(amide-imide)s were synthesized through the direct polycondensation reaction between chiral N,N′-(pyromellitoyl)-bis-L-amino acids and methylene diphenyl-4,4′-diisocyanate in a medium consisting of N-methyl-2-pyrrolidone (NMP) and xylene. The resulted polymers were fully characterized by…
A GaN-based enhancement-mode high electron mobility transistor (HEMT) with a 1.5 nm GaN/9 nm Al0.65Ga0.35N thin barrier was reported. Without any treatment on barrier layer under the gate, the as-grown HEMTs exhibited a threshold voltage of 0.3 V, a maximum drain current density of 441 mA/mm at V GS = 3 V and a peak e…
Calotropis (Asclepiadaceae) commonly known as “madar” is a useful medicinal plant. The two species i.e. Calotropis gigantea and Calotropis procera are to a great extent having a very similar chemical properties, but the colours of their flowers are different. The pH of latex of these two species has been found differe…
In this study, a mechanistic transformation was achieved by taking advantage of coupling reaction of reversible addition–fragmentation chain transfer (RAFT) agents. Polymers prepared by different polymerization modes were coupled to form polystyrene-b-poly(ethylene glycol) (PS-b-PEG) block copolymer. For this purpose,…