Materials Literature
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We present an outline on the use of ellipsometry for nematic liquid crystals characterization. Possibility of anisotropic refractive indices measurement with accuracy up to 10−4 is demonstrated in the visible and near infrared wavelength ranges for different temperatures. Liquid crystal director distributions were mea…
We report a unique fluorophore cumulant dopant approach for tracing the molecular interaction at the polyaniline nanomaterial surface. Emulsion polymerization of aniline + pyrene sulfonic acid (PSA) produced well-defined fluorescent polyaniline nanofibres of 250 nm diameters with lengths up to 1−3 μM. Post-polymerizat…
Abstract The thermoluminescence (TL), optically stimulated luminescence (OSL) and afterglow (AG) properties of chemical vapour deposition (CVD) diamond film irradiated by beta rays with doses from 0.5 to 1000 Gy have been studied. The film (23 µm) was grown for 47 h on monocrystalline silicon. The TL dose responses ar…
Lysins are important biomolecules which cleave the bacterial cell-wall polymer peptidoglycan. They are finding increasing commercial and medical application. In order to gain an insight into the mechanism by which these enzymes operate, the X-ray structure of a CAZy family GH25 ;lysozyme' from Aspergillus fumigatus wa…
Abstract In this paper, we report the effect of nitrogen on the deposition and properties of boron doped diamond films synthesized by hot filament chemical vapor deposition. The diamond films consisting of micro-grains (nano-grains) were realized with low (high) boron source flow rate during the growth processes. The…
Abstract Solid–solid inter‐polytype transformations are observed during the thermal dehydration of sulfate‐containing layered double hydroxides (LDHs). The metal hydroxide layer behaves as a “structural synthon” and the interconversion of polytypes of rhombohedral and hexagonal symmetries takes place by rigid translat…
Abstract This review demonstrates that ion irradiation is a very useful tool in order to tailor the properties of semiconductor nanowires. Besides optical and electrical doping provided by adequate ion species and ion energies, one can use ion beams also for the controlled shaping of the morphology of nanostructures.…
We present relevant results dealing with the transparency/optical nonlinearity trade-off in high-frequency electro-optic applications. The very simple, stable and high optical gap chromophore, the zwitterion 1-methyl-4-(tetrazol-5-ate)pyridinium, represents the best transparency/optical nonlinearity trade-off so far d…
A series of Cu salts of heteropoly acid (Cu x H 3−2 x PW 12 O 40 ) supported MCM-41 catalysts (Cu x H 3−2 x PW 12 O 40 /MCM-41) was synthesized by wet impregnation method and thoroughly characterized by using various analytical techniques, viz., X-ray diffraction, UV−vis diffused reflectance spectroscopy (UV−vis DRS),…
The size, size distribution and shape of ferroelectric BaTiO3 nanoparticles were determined using three different imaging techniques. The nanoparticles fabricated by milling microcrystals were found to have sizes of 12 ± 3 nm, 15 ± 3 nm and 18 ± 3 nm. Liquid crystal suspensions with 1% concentration of nanoparticles w…
We report the experimental realization of a composite microcavity system, in which negatively-charged nitrogen vacancy (NV) centers in diamond nanopillars couple evanescently to whispering-gallery modes (WGMs) in a deformed, non-axisymmetric silica microsphere. We show that the deformed microsphere can feature an evan…
The high-pressure evolution of the ${\text{YCrO}}_{3}$ perovskite structure (space group $Pbnm$) has been investigated using synchrotron powder diffraction, up to 60 GPa. The results show an anisotropy in the elastic moduli of the individual crystallographic axes: the $b$ axis is appreciably less compressible than bot…
It is commonly known that Pickering emulsions are extremely stable against coalescence and are, therefore, potentially interesting for the synthesis of new materials, such as colloidosomes, microcapsules, composite particles, foams, and so on. However, for the efficient synthesis of such materials, one also has to con…
Abstract Previous work showed that annealing induced the great improvement of fracture resistance of β‐iPP, relating to the decreased number of chain segments in the amorphous region. To further prove the rationality of this observation, in this work, the ethylene‐octene copolymer (POE) toughened isotactic polypropyle…
The surfaces of <TEX>$TiO_2$</TEX> and ZnO nanoparticles have been modified by gold (Au) nanoparticles by a reduction method in solution. Their interfacial electronic structures and optical absorptions have been studied by depth-profiling X-ray photoelectron spectroscopy (XPS) and UV-vis absorption spectroscopy, respe…
Tellurite glasses of the system xWO3–75TeO2–(25 − x)B2O3 (0 ≤ x ≤ 25 mol. %) were prepared and studied by differential thermal analysis to explore the effect of WO3 on their glass transition and crystallization kinetics. The crystallization kinetics was studied under non-isothermal conditions using the formal theory o…
Molecular systems have evolved to permit the safe delivery of copper. Despite extensive studies, many copper site structures involved in copper homeostasis, even for the well-studied metallochaperone Atx1, remain unresolved. Cyanobacteria import copper to their thylakoid compartments for use in photosynthesis and resp…
We demonstrate a high-leveled hierarchical self-assembly process into fractal structures. Two hyperbranched multiarm copolymers are first coassembled into binary isotropic vesicles in the primary self-assembly. Then, these primary vesicles are in situ endowed with anisotropic hydrophobic "binding sites" through a pH-i…
The solubility of sirolimus drug in different organic solvents, viz., acetone, chloroform, methanol, ethanol, and dichloromethane, has been measured for the temperature range of (295 to 345) K by a gravimetric method. The relation between solubility and crystal size formation has also been studied. It was found that t…
Abstract The evaporation rate of molybdenum oxide from mixtures with CaO or MgO was studied in the temperature range 300‐1573 K. The investigations were carried out using high temperature X‐ray diffraction and thermogravimetry. Further, additions of these precursors to molten steel in the laboratory scale and the Mo y…