Materials Literature
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In order to optimize the extraction of gelatin from pangasius catfish skin, a response surface method (RSM) involving a Central Composite Design (CCD) was applied. Four variables, namely NaOH concentration (0-0.3 N), acetic acid concentration (0.025-0.125 N), extraction time (2-4 h) and extraction temperature (40-80°C…
The effect of solvent quality with respect to main and side chains on the conformations of molecular brushes is investigated by the methods of molecular hydrodynamics and optics as well as by computer simulation. Copolymers with a polyimide backbone and poly(methyl methacrylate) side chains are studied in solvents fea…
Summary In this study, the low methoxyl pectin‐carboxymethyl cellulose‐based montmorillonite ( LMP ‐ CMC ‐ MMT , LCM ) nanocomposite films with nine ratios of LMP : CMC (from 10:0 to 0:10) and different MMT contents (1–8 wt%) were prepared. The mechanical properties, colour, opacity and water vapour permeability ( WVP…
A novel metamaterial sensor, integrated with an X‐band waveguide, is proposed for high‐resolution measurements of variations in the dielectric constant and/or the thickness of a superstrate layer that covers a pair of absorber unit cells. Variations in superstrate parameters are potentially caused by physical, chemica…
We have simulated sodium dodecyl sulfate (SDS) surfactant/water + bilayer graphene mixture system to investigate two mechanisms of graphene exfoliation: changing the interlayer distance and sliding away the relative distance. By calculating the total energy as a function of the interlayer (sliding-away) distance at di…
Nanotopographical TiO₂ films (including nanorod, nanotip, and nanowire topographies) were successfully fabricated on the metallic Ti surface via hydrothermal treatment and then underwent Ag plasma immersion ion implantation to incorporate Ag with TiO₂. The surface morphology, phase component, and chemical composition…
Carbon Nanotubes (CNT) are one allotropic form of carbon, which have some unique characteristics that make them a suitable reinforcing agent in various types of composites. CNT reinforced composites are gaining more attention in recent days. Reinforcing with CNT leads to increase in strength without considerable incre…
The spin crossover phenomenon consists in switching between two spin states of the central ion of a transition 3d- metal in a molecular complex. The spin crossover can be induced and controlled by temperature, pressure, light radiation etc. The present review addresses all aspects of the effect of hydrostatic pressure…
In 1961, a paper by William B. Shockley and Hans-Joachim Queisser was published in the Journal of Applied Physics. It discussed a fundamental limit on the conversion of sunlight into electrical current 1. The “Shockley-Queisser limit” describes the limited efficiency of solar cells on the basis of absorption and re-em…
The structural, magnetic and electrical transport properties of La 2 MnFeO 6 bulk samples prepared by combustion synthesis have been investigated. The X-ray powder diffraction (XRD) patterns with Rietveld refinement at room temperature shows that samples prepared by combustion synthesis are formed in single phase with…
A sponge wound dressing comprising silk fibroin, N-(2-hydroxy)propyl-3-trimethyl ammonium chitosan chloride, and polyvinyl alcohol was developed for chronic wound healing. These composite sponges were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. The composite sponge had a…
In this paper, the effects of copper ion addition on microstructure, composition, deposition rate and anticorrosive performance of electroless Ni-P coating on AZ61 magnesium alloy have been investigated. Deposits were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-…
Anodic oxide growths on commercially pure titanium in 1 M sulphuric and phosphoric acids have been investigated in the present study. Ruptures and blisters of the oxide layers were found as result of a huge pressure of oxygen bubbles developed within the film. The ruptures were more pronounced when higher anodic volta…
Magnetic nanoparticles (MNPs) have been used for various biomedical applications. Importantly, manganese ferrite-based nanoparticles have useful magnetic resonance imaging characteristics and potential for hyperthermia treatment, but their effects in the cardiovascular system are poorly reported. Thus, the objectives…
We have synthesized 0.3Sm 2 O 3 –0.12Pr 2 O 3 –10Bi 2 O 3 –45Sb 2 O 3 –45B 2 O 3 glass as an ultrawide-band near-infrared phosphor for LED-based light sources. We have achieved an ultrawide-band luminescence from 760 to 1100 nm with an output power of over 1 mW by combining a blue LED with Sm 3+ ,Pr 3+ -codoped borate…
Herein, environmentally friendly surfactants based on new silanols as substitutes for the isoelectronic phosphonates were explored. Surface tensions of aqueous solutions are significantly reduced, particularly with those silanols that feature a high ratio of organic moiety to silanol. Besides their use as surfactants,…
The functionalization of dendrimers and other macromolecules with cationic redox-active organometallics remains a target toward metal-containing dendrimers and polymers that can serve in particular as polyelectrolytes and multielectron redox reagents. Along this line, we report the click functionalization of organomet…
Phase transformations during the growth of paracetamol crystals from the vapor phase are studied by differential scanning calorimetry. It is found that the vapor-crystal phase transition is actually a superposition of two phase transitions: a first-order phase transition with variable density and a second-order phase…
The transport properties of epitaxial graphene formed on the surface of a semiconductor substrate are considered. An approach based on the model Anderson Hamiltonian in the Haldane-Anderson approximation is used. An analytical expression for the density of states of epitaxial graphene is derived. The behavior of the d…
Purpose – The purpose of this paper is to describe a rapid and robust axisymmetric hybrid algorithm to create dynamic temporal and spatial charge distributions, or charge map, in the simulation of bipolar charge injection using Schottky emission and Fowler-Nordheim tunneling, field-dependent transport, recombination,…