Materials Literature
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We have investigated morphological and optical properties of zinc oxide rods. Highly structured ZnO layers comprising with well‐shaped hexagonal rods were prepared by spray pyrolysis deposition of zinc chloride aqueous solutions at ~550 ∘ C. The rods were characterized by X‐ray diffraction, scanning electron microscop…
The effect of (60)Co γ irradiation on the absorption and emission spectra of the organometallic polymer [-Pt(PBu(3))(2)-C≡C-C(6)H(4)-C(6)H(4)-C≡C-](n) (Pt-DEBP) in chloroform and toluene solutions for dosimetry applications has been studied. The system Pt-DEBP/chloroform can be used for dosimetric applications in two…
We examine the thermally induced fracture of an unstrained polymer chain of discrete segments coupled by an anharmonic potential by means of molecular dynamics simulation with a Langevin thermostat. Cases of both under- and over-damped dynamics are investigated, and a comparison with recent studies of bond scission in…
The structural environment of Mg in a K-bearing silicate glass of composition K(2)MgSi(3)O(8) is investigated by x-ray absorption near-edge structure (XANES) spectroscopy at the Mg K-edge. XANES calculations are performed using a plane-wave electronic structure code, and a structural model obtained by classical molecu…
The effect of an external ac electric field on the nucleation rate of hen egg white lysozyme crystals increased with an increase in the concentration of the precipitant used, which enabled the design of an electric double layer (EDL) formed at the inner surface of the drop in the oil. This is attributed to the thickne…
Detailed insight into the magnetic properties and mobility of the different deuteron species in jarosites (AFe 3 (SO 4 ) 2 (OD) 6, A = K, Na, D 3 O) is obtained from variable-temperature 2 H MAS NMR spectroscopy performed from 40 to 300 K. Fast MAS results in high-resolution spectra above the Néel transition temperatu…
Jute fabrics such as reinforced polyvinyl chloride (PVC), polypropylene (PP), and a mixture of PVC and PP matrices-based composites (50 wt% fiber) were prepared by compression molding. Tensile strength (TS), bending strength (BS), tensile modulus (TM), and vbending modulus (BM) of jute fabrics' reinforced PVC composit…
Cotton and linen fibers were ground in a ball-mill, and the effect of grinding on the microstructure and surface properties of the fibers was determined by combining a couple of simple tests with powerful techniques of surface and structure analysis. Results clearly proved that the effect of grinding on cotton fiber w…
The barnacle exhibits a high degree of control over its attachment onto different types of solid surface. The structure and composition of barnacle cement have been reported previously, but mostly for barnacles growing on low surface energy materials. This article focuses on the strategies used by barnacles when they…
The posterior silk gland (PSG) is the most important suborgan responsible for the synthesis and secretion of silk core fibroin proteins in silkworm. Here, we performed genome-scale expression profiling analysis of silkworm PSG at the fourth molting (M4) and at day 1 (V1), day 3 (V3), day 5 (V5), and wandering stage (W…
The free-radical graft polymerization of hydrophobic glycomonomer onto surface-activated perlite particles was studied experimentally. The grafting procedure consisted of surface activation with 3-(trimethoxysilyl) propyl methacrylate (TSPA), followed by free-radical graft polymerization of glucose acrylate (GA), usin…
A series of sulfonated polyaniline/derivatized polyaniline nanocomposites was chemically synthesized in the presence of anthracene and naphthalene sulfonic acids. UV-vis and FTIR results indicated the emergence of new bands at 420 and 700 nm and 1100 cm−1 in their spectra, respectively, meaning the dopant/polymer inte…
The use of click chemistry for quantum dot (QD) functionalization could be very promising for the development of bioconjugates dedicated to in vivo applications. Alkyne-azide ligation usually requires copper(I) catalysis. The luminescence response of CdSeTe/ZnS nanoparticles coated with polyethylene glycol (PEG) is st…
We report small angle x-ray scattering (SAXS) studies of isotropic, nematic, and smectic mesophases formed by binary mixtures of bent-core (BC) and rod-shaped (RS) molecules. While optical studies indicate that the components are fully miscible, SAXS reveals fascinating structures that are consistent with segregation…
We have investigated single layer, bilayer and few-layer graphene exfoliated on SiO 2 and on single crystal surfaces of SrTiO 3 , Al 2 O 3 and TiO 2 using Raman spectroscopy. The typical 'fingerprint' 2 D peak turns out to be indicative of the number of graphene layers independent of the substrate material. The morpho…
Although "chaperone molecules" rich in negatively charged residues (i.e., glutamic and aspartic acid) are known to play important roles in the biomineralization process, the precise mechanism by which type I collagen acquires intrafibrillar mineral via these chaperone molecules remains unknown. This study demonstrates…
The thermodynamic behavior of hyperbranched poly(ethylenimine) with isobutyramide groups (HPEI-IBAm) during thermal-induced phase transition in water was investigated by turbidity measurement, calorimetric measurements (DSC), FT-IR, and dynamic light scattering (DLS). Both turbidity and calorimetric measurements indic…
A series of 2,3,4,5-tetraphenylgermoles with different 1,1-substituents have been prepared, and their UV–vis absorption and fluorescence spectral profiles in solution were determined. A thin-layer chromatography based method was used to measure their solid-state luminescence. Nine of the 11 new germoles have been char…
We report detailed measurements of the de Haas--van Alphen (dHvA) effect in BaFe${}_{2}$P${}_{2}$, which is the end member of the superconducting series, BaFe${}_{2}$(As${}_{1\ensuremath{-}x}$P${}_{x}$)${}_{2}$. Using high-purity samples, we are able to observe dHvA oscillations from all the sheets of the Fermi surfac…
By combining atomic force microscopy (AFM) and large-scale molecular dynamics (MD) simulations, we examine at comparable scales the atomistic processes governing nanohardness in electrodeposited nanocrystalline Ni with a mean grain diameter of 18.6 nm under confined contact deformation. Notably, this mean grain diamet…