Materials Literature
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Much effort has been directed at the fabrication of carbon nanotubes (CNTs)/polymer composites and the characterization of their physical properties. Among them, composites comprising CNTs and the biocompatible polymers are of special interest due to their potential for specific biomedical applications. we report the…
Abstract Undoped ZnO thin films were prepared using the ultrasonic spray pyrolysis deposition technique with zinc acetylacetonate dissolved in N,N‐dimethylformamide as the source materials solution. The addition of water mist in a parallel flux to the spray solution stream was also used during deposition of the films.…
The present work deals with investigating the loss kinetics of atomic hydrogen in an H 2 /CH 4 pulsed microwave discharge used for diamond chemical vapour deposition. The temporal evolution of the hydrogen atom density, particularly in the afterglow phase, was investigated in order to determine the fundamental loss pr…
We modified the model of Forrestal and Tzou (1997 Forrestal , M. J. , Tzou , D. Y. ( 1997 ). A spherical cavity-expansion penetration model for concrete targets . International Journal of Solids and Structures 34 ( 31–32 ): 4127 – 4146 . [CROSSREF] [CSA] [Crossref], [Web of Science ®] , [Google Scholar]) for a case of…
The superstructure of Bi 1 - x Ca x MnO 3 ( x = 0.4 or 0.45), which exhibits a charge/orbital-ordered state at room temperature ( T CO ≈ 330 K), has been successfully determined at different temperatures using single-crystal X-ray diffraction data and the superspace formalism. This peculiar approach provides a very co…
Dynamic loss spectra for laser-deposited poly(methyl methacrylate) (PMMA) films are investigated at a frequency of 5.4 kHz with dielectric spectroscopy and mechanical torsional spectroscopy using a double-paddle oscillator as a substrate in a temperature range from room temperature up to 530 K. By comparing both metho…
Ferromagnetic resonance (FMR) has been applied to study the variation of magnetic anisotropy and phase separation tendencies in the ferromagnetic insulating state of stoichiometric hole-doped ${\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Ca}}_{x}\mathrm{Mn}{\mathrm{O}}_{3}\phantom{\rule{0.3em}{0ex}}(0.125\ensuremath{\leqs…
Realistic molecular dynamics simulations of polyaminocarboxylate complexes of gadolinium (III) ion in water are performed, providing coordination numbers and average residence times in quantitative agreement with available experimental data. A theoretical analysis, based on fitting a fluctuating charges model on ab in…
The Rietveld method is used to extract quantitative texture information from a single synchrotron diffraction image of a CaSiO(3) perovskite sample deformed in axial compression in a diamond anvil cell. The image used for analysis was taken in radial geometry at 49 GPa and room temperature. We obtain a preferred orien…
The unprecedented occurrence of two different kinds of uniplanar orientation by solution casting, observed for syndiotactic polystyrene (s-PS) films, has been rationalized in terms of host−guest interactions into molecular complex phases. Correlation lengths along different crystallographic directions ( D hkl ), of mo…
The parameters characterising the trap centres involved in the thermoluminescence of KMgF3:LaF3 compounds have been found by deconvolving the glow curve with the General One Trap model (GOT). For the fitting procedure the Levenberg-Marquardt method has been employed. Tm-T(stop) measurements along with initial rise mea…
Methods have been developed to facilitate the data analysis of multiple two-dimensional powder diffraction images. These include, among others, automatic detection and calibration of Debye-Scherrer ellipses using pattern recognition techniques, and signal filtering employing established statistical procedures like fra…
Two types of biodegradable polyurethanes (PUs) were synthesized from methylene di-p-phenyl-diisocyanate (MDI), polycaprolactone diol (PCL-diol), and chain extenders of either butanediol (BD) or 2,2'-(methylimino)diethanol (MIDE). The effects of two types of chain extenders on the degradation, mechanical properties, hy…
Long whiskers of calcium molybdate (CaMoO 4 ) were selectively grown by rapid cooling of a NaCl flux. The crystal growth of CaMoO 4 was conducted by heating a mixture of solute and flux at 900 °C for 10 h and then cooling to 500 °C at a rate of 270 °C·h -1 or quenching in a furnace with the electric power turned off.…
Electronic and structural properties of sodium-aluminum hexahydride $({\mathrm{Na}}_{3}\mathrm{Al}{\mathrm{H}}_{6})$ formed during the decomposition reaction of sodium alanate $(\mathrm{Na}\mathrm{Al}{\mathrm{H}}_{4})$ and the effects of Ti catalyst are studied using supercell approach and density-functional theory. T…
In this study, the process of manufacturing and sterilizing an orthopedic implant constructed from poly(L-lactic acid) (PLLA) was closely simulated. The hydrogen peroxide gas plasma (HPGP) sterilization process was comparatively investigated against ethylene oxide (EtO). Characterization of the physical, thermal, mech…
The regenerated liquid silk fibroin with an average molecular mass of about 60 kDa consists of 18 kinds of amino acids containing approximately 10% of polar amino acids with hydroxyl and amino groups such as serine and lysine. The liquid silk fibroin is coupled covalently with insulin molecules through these strongly…
The effects of ionic strength and solvent polarity on the equilibrium distribution of fluorescein (FL) and FITC-dextran between the interior of polyelectrolyte multilayer microcapsules filled with negatively charged strong polyelectrolyte and the bulk solution were systematically investigated. A negatively charged str…
The micellar photoreduction of benzophenone in the presence of Ag+ leads to very rapid and efficient formation of silver nanoperticles. External magnetic fields can be used to control the rate of formation and properties of silver nanoparticles generated by reaction of ketyl radicals formed in the photoreduction of be…
Three-dimensional (3D) porous chitosan scaffolds are attractive candidates for tissue engineering applications. Chitosan scaffolds of 70, 88, and 95% degree of deacetylation (% DD) with the same molecular weight were developed and their properties with buffalo embryonic stem-like (ES-like) cells were investigated in v…