Materials Literature
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Well-defined colloidal polymeric nanoparticles are important in advanced biomedical and optical technologies. We report a facile microwave methodology to prepare narrowly dispersed cross-linked polymeric nanoparticles at high solids content through a surfactant-free emulsion polymerization process. The nanoparticle si…
An improved understanding of molecular response in the vocal folds to a synthetic extracellular matrix (sECM) during early wound repair is essential for understanding functional improvement of the tissue and implementation of future tissue-engineering strategies. The present study used real-time reverse transcriptase…
ZnO thin films were grown on sapphire substrates at a growth temperature of 400 °C by Nd:yttrium–aluminum–garnet (Nd:YAG 1064 nm) pulsed-laser deposition. The effects of oxygen pressure on the structure, stoichiometric composition and optical properties of ZnO thin films were investigated in detail. X-ray diffraction…
Four colorless tourmalines of the liddicoatite-elbaite series from pegmatites from Anjanabonoina, Madagascar, have been characterized by crystal-structure determination and by chemical analyses. Optimized formulae range from X (Ca 0.57 Na 0.29 □ 0.14 ) Y (Al 1.41 Li 1.33 Mn 2+ 0.07 □ 0.19 ) Z Al 6 T (Si 5.86 B 0.14 )O…
The precise placement of single-walled carbon nanotubes (SWCNTs) in device architectures by ac dielectrophoresis involves the optimization of the electrode geometry, applied voltage and frequency, load resistance, and type of nanotube sample used. The authors have developed a toolkit to controllably integrate SWCNTs i…
Determination of protein structure classically results in a single average configuration that takes no account of conformational fluctuation. Dynamics are, however, inherently linked to structure and crucial to our understanding of biological function. In this study we have used analytical descriptions of dynamic aver…
Field emitters in nanoscale are important in micro/nanoelectronic devices. Here, we report a large scale synthesis and effective field emission of field nanoemitters. The integrated nanostructures of ultrathin BN nanosheets aligned on Si3N4 nanowires are prepared through a two-stage process. Si3N4 nanowires were previ…
Purpose To assess the protective effect and adsorption behaviour of Azadirachta indica extract in controlling mild steel corrosion in 1 M H 2 SO 4 and 2 M HCl. Design/methodology/approach The inhibitive effect of the plant extract was monitored using the gas‐volumetric technique. The inhibition mechanism was inferred…
An anthrylidene derivative of arjunolic acid could immobilize varieties of organic solvents at low concentrations in the presence of an electron-deficient guest. Gelation in the presence of picric acid in organic solvents could be observed visually with concomitant color change. Electron micrographs of the xerogels sh…
In this work we performed ab initio pseudopotential, density functional calculations of the structure and electronic properties of two hypothetical carbon structures with cubic symmetry: ${\mathrm{C}}_{6}$ bcc, body centered with 12 atoms per cubic unit cell, and ${\mathrm{C}}_{20}$ sc, simple cubic with 20 atoms per…
Promising results have come from attempts to direct drugs, nucleic acids and diagnostic agents to tumours by using polymeric nanoparticles. Such carriers are versatile; their encapsulation capacity, drug release profile, and biological performance vary with their chemical makeup, morphology, and size. Polymeric nanopa…
Abstract Summary: The synthesis, morphology, and photophysical properties of PF‐ b ‐PAA with different coil lengths in dilute solutions of dichloromethane/methanol are reported. A tape‐like lamellar morphology is observed at a short coil length of PF‐ b ‐PAA. As the coil length increases, a large compound micelle, sph…
Polycrystalline In2O3 films with high crystallinity were prepared by annealing the amorphous In2O3 films deposited at room temperature by using dc/rf sputtering method. General electronic behaviors of both these amorphous and polycrystalline films have been investigated by means of Hall effect and resistivity measurem…
Abstract We propose a new approach to fabricating carbon nanotube (CNT) via interconnects for future LSIs, which uses preformed catalyst nanoparticles to grow the CNTs. A newly designed impactor provided size‐classified catalyst particles. For the new approach, we employ a TiN contact layer which is more resistant to…
The reduction of selenious acid solution with hydrazine hydrate in the presence of poly(vinylpyrrolidone) (PVP) can produce a stable dispersion of uniform and amorphous selenium particles capped with PVP with a size of 100 nm. Further addition of a solvent with low polarity such as n-butyl alcohol into this aqueous so…
A large domain motion in adenylate kinase from E. coli (AKE) is studied with molecular dynamics. AKE undergoes a large-scale rearrangement of its lid and AMP-binding domains when the open form closes over its substrates, AMP, and Mg2+-ATP, whereby the AMP-binding and lid domains come closer to the core. The third doma…
Over the last few years, polymer/layered silicate (PLS) nanocomposites have been an area of intense academic and industrial research. No matter the measure-journal articles, patents, and industry research and development (R&D) funding-efforts in PLS-nanocomposite have been exponentially growing worldwide for the last…
Abstract Poly(propylene) (PP) wood composites were prepared in a wide composition range from 0 to 70 wt% wood content. Matrix/wood adhesion was improved by the introduction of two maleinated polypropylenes (MAPPs) with different molecular weights and functionality. MAPP/wood ratio changed from 0 to 0.25 in 0.05 steps.…
An efficient and versatile synthetic route to resonance stabilized bisselenathiazolyl and bisdiselenazolyl radicals 3 and 4 is described. Structural analysis of 3 and 4 confirm that lattice and pi-delocalization energies are sufficient to offset solid-state dimerization of the radicals and that the two selenium-contai…
We use molecular simulations to study polymorph selection during the crystallization of charge-stabilized colloidal suspension. By modifying the conditions of crystallization, we invert the stability of two polymorphs and induce the formation of crystallites whose structure is predominantly that of the stable polymorp…