Materials Literature
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Uniform crystalline CdSnO3.3H2O nanocubes with a 28-35 nm edge length have been obtained via the ion-exchange reaction of Na2Sn(OH)6 in a CdSO4 aqueous solution, assisted by ultrasonic treatment. Precursor Na2Sn(OH)6 crystals were prepared via hydrothermal treatment in an ethanol/water solution. The formation of CdSnO…
Abstract A study of the crystallization process of syndiotactic polystyrene is carried out, with particular emphasis on the effect of previous melt annealing on the subsequent crystallization kinetics and polymorphism, with a combination of thermal analysis, infrared spectroscopy, and X‐ray diffraction. An effort is m…
Abstract In this study, the conditions leading to the formation of cells and to the onset of crystallization of polycarbonate were examined with the use of supercritical carbon dioxide for the production of foams from preforms. Small plaques cut from extruded sheets were treated with supercritical carbon dioxide in an…
Cf–SiC composite was brazed to Ti alloy using an interlayer of Ag–Cu–Ti alloy, Ti and C mixed powder. Microstructure and shear strengths of the brazed joint at both room temperature and 500°C were investigated. The performed joints have dense bonding layers reinforced by in situ synthesised TiCx from reaction of C and…
A new microelectromechanical system (MEMS)-based tensile testing stage (with integrated actuator, direct load sensing beam, and electrodes for controlled assembly of an individual nanostructure) was developed and used for in situ tensile loading of a templated carbon nanotube (T-CNT) inside a scanning electron microsc…
The special binding of Tat protein to TAR RNA leads to the transcription of HIV-1 virus. In this study, the influence of 2-5 generation of PAMAM dendrimers on the inhibition of Tat protein/TAR RNA binding has been investigated. The absorption of PAMAM dendrimers on TAR RNA, fixed on a gold substrate through an avidin-…
Slow release testosterone-loaded nanocapsules in alginate, biodegradable hydropolymer, were prepared by in situ nanoemulsion-polymer crosslinking approach. Different formulations varying in the drug loading solvent phase were prepared. Four different drug-loading solvents were assayed and the food grade hexane provide…
ADVERTISEMENT RETURN TO ISSUEPREVAddition & Corre...Addition & CorrectionORIGINAL ARTICLEThis notice is a correctionFunctionalized Carbon Nanotubes Are Non-Cytotoxic and Preserve the Functionality of Primary Immune CellsHélène Dumortier, Stéphanie Lacotte, Giorgia Pastorin, Riccardo Marega, Wei Wu, Davide Bonifazi, Je…
We performed high-pressure Hall effect and resistivity measurements in p-type GaSe and InSe up to 12 GPa. The pressure behaviour of the transport parameters shows dramatic differences between both materials. In GaSe, the hole concentration and mobility increase moderately and continuously. In InSe, the hole mobility r…
Within divalent transition metals hexacyanometallates (III) the copper (2+) salts show unique features. To the copper (2+) salts correspond the shortest unit cell edges, the highest ν(CN) vibration frequencies, the lowest hydration degree and dehydration temperatures, the lowest Mössbauer isomer shift value, and the s…
Nanotechnology offers an extremely broad range of potential applications in, for example, electronics, optical communication and biological systems. Gold nanoparticles of different sizes and shapes combined with polyaniline can give rise to a host polymer with interesting physical properties and important potential ap…
We report on the correlation between paramagnetic defects and the luminescent properties of nanocrystalline silicon (nc-Si) using electron spin resonance (ESR) and photoluminescence measurements. Nanocrystalline silicon having particle sizes from 1.9to3.0nm exhibited continuous luminescence from blue to red wavelength…
Abstract Diagenesis in the Cretaceous and Tertiary sediments of the Alava Block (Basque- Cantabrian basin) has been studied using the clay mineralogy (X-ray diffraction) of cuttings from three representative wells of a N—S cross-section. More than 5500 m of various lithologies (marls, mudstones and sandstones) have be…
Abstract Wettability of soil affects a wide variety of processes in soils like infiltration, percolation, preferential flow, and surface runoff. Even though efforts have been made to determine contact angles and surface tension or energy of smooth surfaces, the determination on granular materials like soil particles r…
Density functional and ab initio methods have been used to study the mechanisms for key dynamic processes of the experimentally known S4-symmetric [16]annulene (1a). Using BH&HLYP/6-311+G** and B3LYP/6-311+G**, we located two viable stepwise pathways with computed energy barriers (Ea = 8-10 kcal/mol) for conformationa…
The preparation, properties, and application in adriamycin delivery ofbiocompatible and biodegradable poly(lactide-co-glycolide)-polyethylene glycol (PLGA-PEG) nanoparticles are discussed. PLGA-PEG copolymers were synthesized by ring opening polymerization of the dl-lactide and glycolide in the presence of PEG1000. 1H…
In this study, the interaction of undoped ZnO films with (NH4)2Sx treatment have been investigated by x-ray photoelectron spectroscopy, photoluminescence, optical transmittance, and four-point probe. According to the experimental results, we find that the formation of Zn–S bonds and the reduction of oxygen vacancies (…
A hydrazine-based process for solution-depositing phase-change materials (PCMs) is demonstrated, using KSb 5 S 8 (KSS) as an example. The process involves dissolving the elemental metals and chalcogen in hydrazine at room temperature and spin-coating the solution onto a substrate, followed by a short low-temperature (…
Optical microscopy (OM) and atomic force microscopy (AFM) were used to investigate the effect of liquid−liquid phase separation (LLPS) on the lamellar crystal morphology in a statistical copolymer blend of poly(ethylene- co -hexene) (PEH) and poly(ethylene- co -butene) (PEB). The quench depth and the time of liquid−li…
Abstract This paper examines the effects of shear stress on the structural parameters that define the ‘crystallinity’ of graphite. The results show that highly crystalline graphite samples ground for up to 120 min do not undergo detectable changes in the three-dimensional arrangement of carbon layers but crystallite s…