Materials Literature
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Vector magneto-optical generalized ellipsometry is employed for the determination of the three-dimensional magnetization properties of magnetized thin solid as well as slanted columnar thin film samples. The permalloy thin films were probed by means of Mueller matrix ellipsometry at room-temperature while an external…
The possibility to use an ultra-fast laser operating at 1550 nm wavelength to induce intensity self-modulation in metal-insulator phase transition VO2 thin films was investigated. The results show that a self-modulation value upto 0.55 can be obtained by using z-scan method. In comparison, an externally triggered phas…
The ability of some liquids to vitrify during supercooling is usually seen as a consequence of the rates of crystal nucleation (and∕or crystal growth) becoming small [D. R. Uhlmann, J. Non-Cryst. Solids 7, 337 (1972)]--and thus a matter of kinetics. However, there is evidence dating back to the empirics of coal brique…
The dynamic reflection spectra of amorphous blue phase III were investigated. When an electric field is applied to a blue phase III cell, the reflected wavelength does not shift obviously, but the intensity of reflection increases or decreases in a few ms. This fast intensity-tunable phenomenon in blue phase III relat…
In this work, a steroidal gelator containing an imine bond was synthesized, and its gelation behavior as well as a sensitivity of its gels towards acids was investigated. It was shown that the gels were acid-responsive, and that the gelator molecules could be prepared either by a conventional synthesis or directly in…
Comprehensive time-resolved photoluminescence measurements are performed on shallow neutral donor bound excitons (D0Xs) in bulk ZnO. It is found that transients of the no-phonon D0X transitions (I6-I9 lines) are largely affected by excitation conditions and change from a bi-exponential decay with characteristic fast (…
In this paper, the synthesis and characterization of porous copolymers of 1-vinyl-2-pyrrolidone with divinylbenzene are presented. They were obtained by suspension polymerization as pure polymers or composite materials with different inorganic fillers. The influence of the type of filler on the textural and thermal pr…
While developing new polymers, a high level of stiff and simultaneously tough material behavior is an important goal. This study shows a new approach to optimize the stiffness/toughness behavior of polyamide 6 (PA 6) by incorporating both stiff and elastomeric nanofillers during melt compounding. For stiffness enhance…
Understanding the quantitative analysis of the transition adsorption structures of molecules on single-walled carbon nanotubes (SWNTs) is of importance from the point of view of both fundamental science and applications of nanotubes. Absorption spectroscopy reveals that two different equilibrium states are existent fo…
Raman spectra of KTa₀.₅Nb₀.₅O₃ nanopowder solid solution were obtained at the temperatures from –190°C to 600°C and investigated for the first time. The compound was synthesized by a new technology. Temperature dependences of the intensity, width and frequency of the B₁(TO₂), A₁(TO₁), B₁(TO₃), A₁(TO₃) and B₂(TO₃) mode…
The objective of this study was to characterize the mechanical behaviour of basalt/HDPE composite under in-vitro condition. Basalt fiber has been performed as an alternative reinforcement material to reduce the domination of the synthetic fibers such as carbon and E-glass fiber in the medical application. Mechanical t…
N-doped Co${}_{x}$Zn${}_{1\ensuremath{-}x}$O epitaxial films were grown by reactive magnetron sputtering using a range of different N${}_{2}$ and O${}_{2}$ concentrations. They were studied by x-ray absorption near edge spectroscopy (XANES) and x-ray linear dichroism (XLD). The incorporation of N into the ZnO host lat…
Abstract We studied loparite-containing rocks (lujaurites, juvites, foyaite-juvites, etc.) sampled from a complex of differentiated rocks and, partly, from a complex of eudialytic lujaurites of the Lovozero alkaline massif. Zoned crystals of loparite (the zoning is due to variations in Ti, Nb, REE, Sr, and Th contents…
Summary The resistance‐in‐series model was used to analyse flux behaviour, which involved the resistances of membrane itself, the fouling and solute concentration polarisation. Response surface methodology was used to establish the relationships between operating parameters and ultrafiltration (UF) efficiency and thus…
Redoxschaltung: Chirale Heteropolyblauverbindungen wurden aus achiralen Polyoxometallatclustern durch intermolekulare Wechselwirkung mit einer chiralen organischen Verbindung erzeugt. Die reversible Photochromie der Polyoxometallate wurde genutzt, um ein gezieltes chiroptisches Schalten der Clusterkomplexe zu erreiche…
Because of their suitable bio-mechanical properties, polymeric materials, such as Poly(L-lactic acid) (PLLA), and poly (lactic-co-glycolic acid) (PLGA), are often used in the biomedical field, in particular for cardiovascular applications. Implanted materials induce several events related to the inflammatory reaction,…
Neurological glutamate receptors are among the most important and intensely studied protein ligand binding systems in humans. They are crucial for the functioning of the central nervous system and involved in a variety of pathologies. Apart from the neurotransmitter glutamate, several artificial, agonistic and antagon…
Results of dilatometric (80–800 K) and DTA (293–1200 K) investigations of borate glasses Li₂B₆O₁₀, LiCsB₆O₁₀, Li₂B₄O₇, LiKB₄O₇, LiCaBO₃ and CaB₄O₇ in temperature range have been presented. Thermal parameters Tg, TD, Tp, Tm and temperature dependences of thermal expansion coefficient α(T) have been determined and analy…
We analyze an approach toward stabilizing high-pressure rocksalt (RS) CdSe phases at atmospheric pressures using a ZnS core–CdSe shell 1 –ZnS shell 2 architecture. The approach exploits the lattice mismatch between ZnS core and CdSe shell 1, which generates bulk stress in the CdSe shell 1 in wurtzite structure, thus d…
We analytically compute the thermal conductivity of anharmonic crystals with self-consistent stochastic reservoirs. We develop an integral representation for the heat current, assume the approximation of discrete times, and in a perturbative analysis that is rigorously supported by a convergent cluster expansion compu…