Materials Literature
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Polypropylene (PP) fibers loaded with two different amounts of nanoclay (3 and 5%) were prepared by melt mixing technique. Mixture design was used to find these two optimum percentages for preparing the fiber. The PP nanocomposite fibers obtained were uniformly dyed with three distinct disperse dyes at 100 and 130°C.…
Abstract Nanomaterials play an important role in modern science and engineering. The ability to fabricate nanomaterials with high quality and low cost is a primary stage for further discovering their applications. This research article presents a facile fabrication of Cu2O nanowires on Cu substrate. It was found that…
Polypropylene based ferroelectret films exhibit a strong electromechanical activity and provide a promising solution for the air coupled ultrasonic (ACUS) transducers. Ultrasonic transmission between two air coupled ferroelectret transducers in dependence on the amplitude and polarity of the high voltage exciting puls…
We study the viscous behavior of glass composites with respect to type of filler, filler size, distribution, and interaction between the matrix and filler for industrial applications. Here, the viscosities of the composites were analyzed as a function of the type/size of the fillers (up to 20 wt% of Al 2 O 3 , ZnO , a…
Bioresorbable polymers have been widely investigated as materials exhibiting significant potential for successful application in the fields of tissue engineering and drug delivery. Further to the ability to control degradation, surface engineering of polymers has been highlighted as a key method central to their devel…
Abstract The optical, structural, and mechanical properties of Bi 4 V 2 − x M x O 11 − δ (0 ≤ x ≤ 0.4 in the steps of 0.1, M = Mn, Ga, As) oxides have been investigated. The parameters like band gap ( E g ), Urbach energy ( E u ), grain size, hardness ( H ), and fracture strength ( K ) have been calculated as a functi…
Adsorption geometry, nuclear vibrations, and molecular orientation of the dye with respect to the oxide surface affect significantly the performance of dye-sensitized solar cells. We compute the influence of these factors on injection and recombination conditions in organic amino-phenyl acid dyes differing by the dono…
This article deals with the optimization of the process parameters, with regard to multiple performance characteristics, involved in the preparation of transparent conducting Al 2 O 3 ‐doped (2 wt.%) zinc oxide ( AZO ) thin films deposited onto flexible polyethylene terephthalate ( PET ) substrates, using radio freque…
N,N-Dipyridilaminoxyl, NOpy(2), having a stable aminoxyl, was prepared as a new magnetic coupler for heterospin systems. Solutions of NOpy(2) were mixed with those of bis{1,1,1,5,5,5, hexafluoro-4-(phenylimino)-2-pentanonate}cobalt derivatives, Co(hfpip-X)(2), at a 1:1 ratio to afford the polymeric cobalt(II) complexe…
Synthesis of Sc2O3 nanopowders using a wet chemical approach and fabrication of transparent polycrystalline Sc2O3 ceramics via a two-step sintering procedure (vacuum sintering plus hot isostatic pressing) have been investigated. A hydrated basic sulphate precursor powder [Sc(OH)(3−2x)(SO4)x.nH2O] is synthesised from t…
The C 1s core-level energy difference of surface and bulk regions of organic semiconductor films, Alq 3, bathocuproine, and Cu-phthalocyanine, are reported. For the analysis, we employed a novel method based on angle-resolved photoemission spectroscopy and target factor analysis, which we developed recently [ Chem. Ph…
We analyze thermally stimulated luminescence (TSL) above room temperature in Ce-doped Y$_{2}$SiO$_{5}$oxyorthosilicate single crystal. We perform detailed TSL glow peak analysis based on the initial rise technique to evaluate trap depths and other characteristics associated with TSL peaks. The tunneling process previo…
New apparatus and a new process for the sputter deposition of modified barium titanate thin-films were developed. Films were deposited at temperatures up to 900 °C from a Ba0.96Ca0.04Ti0.82Zr0.18O3 (BCZTO) target directly onto Si, Ni and Pt surfaces and characterized by X-ray diffraction (XRD), scanning electron micro…
A new type of model branched polymer, asymmetric H-shaped polybutadienes, consisting of central crossbars having various combinations of short and long arms attached to the ends of the crossbars, was synthesized using living anionic polymerization and chlorosilane linking chemistry. The linking agent 4-(dichloromethyl…
Initial clinical feasibility with the small-diameter chitosan artificial vascular prosthesis has been reported previously. Here, we present the results of mechanical properties of artificial vascular prosthesis with 2, 3, and 4 mm inner diameter (ID) and compare some of the properties with the native blood vessel of d…
The aim of this work is to assess the differences in the polymeric structure and performance of melamine–urea formaldehyde (MUF) resins, when changing relevant synthesis variables: formaldehyde/amine groups [F/(NH2)2] molar ratio (both in the methylolation and the condensation steps) and the feedrate of urea during th…
Membranes made from nanoporous alumina exhibit interesting properties for their use in biomedical research. They show high porosity and the pore diameters can be easily adjusted in a reproducible manner. Nanoporous alumina membranes are thus ideal substrates for the cultivation of polar cells (e.g., hepatocytes) or th…
Abstract The study of Raman spectra of recently predicted ultrathin diamond films (diamanes) with nanometer thickness, transformed from multilayered graphenes by the adsorption of hydrogen is presented. Here we studied the phonon spectra of diamane structures in detail by ab initio method, especially the Raman and inf…
New oil-in-alcohol highly concentrated emulsions were formulated and were used as a templates to obtain macroporous poly(furfuryl alcohol) monoliths by a one-step method. The oil-in-alcohol highly concentrated emulsions were prepared by stepwise addition of the oil phase to the surfactant-alcohol solution and were cha…
The ionic motion in connection with the redox transformation of poly(3,4-ethylenedioxythiophene) (PEDOT) conjugated polymer have been studied by both experimental-electrochemical (electrochemical quartz crystal nanobalance, EQCN) and spectroscopic (infrared spectroscopy, IR-ATR)-and theoretical methods. The observatio…