Materials Literature
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The emission of millions of fluorescence photons from a chromophore is controlled by the absorption of a few tens of photons in a photochromic molecule. The parameters that determine the efficiency of this process are investigated, providing insights for the development of an all-optical gate.
Motivated by the existence of helical wrapping patterns in composite nanotube systems, in this work we study the effects of the helical incorporation of carbon atoms in boron nitride nanotubes. We consider the substitutional carbon atoms distributed in stripes forming helical patterns along the nanotube axis. The dens…
Measurements of magneto-resistivity and magnetic susceptibility were performed on single crystals of superconducting Ba(Fe0.9Co0.1)2As2 close to the conditions of optimal doping. The high quality of the investigated samples allows us to reveal dynamic scaling behaviour associated with a vortex-glass phase transition i…
Purpose – The purpose of the current investigation is to design a robust and reliable computational framework to effectively identify the nonlinear behavior of shape memory alloy (SMA) actuators, as one of the most applicable types of actuators in engineering and industry. The motivation of proposing such an intellige…
Reactions of anhydrous H3PO4 with different tetraalkoxysilanes (Si(OR)4, R = Me, Et, iPr, nBu) in a 1 : 1 molar ratio in diethylether at room temperature and normal pressure generate silicophosphates (SiPOs). Solid state 29Si NMR investigations clearly indicate that the precipitates contain large amounts of SiO6-speci…
Abstract Die Aktivität des metabolischen Schlüsselenzyms PriA aus Mycobacterium tuberculosis ( mt PriA) kann reversibel durch Licht kontrolliert werden. Auf der Grundlage des Dithienylethen‐Gerüsts wurden entsprechend der zweifachen Rotationssymmetrie des Proteins symmetrische Inhibitoren mit terminalen Ankern entworf…
We grew graphene epitaxially on 6H-SiC(0001) substrate by the simulated annealing method. The mechanisms that govern the growth process were investigated by testing two empirical potentials, namely, the widely used Tersoff potential [J. Tersoff, Phys. Rev. B 39, 5566 (1989)] and its more refined version published year…
Neutron powder diffraction (NPD) is a powerful tool for the characterization of oxides. Unlike X-ray diffraction where scattering occurs from the electron cloud, neutrons interact with the atomic nucleus enabling direct characterization of the oxygen sublattice. This reveals critical information related to the locatio…
Semiconductor–semiconductor hetero-nanorods (Ag2Se–CdSe and Ag2Se–ZnSe) with high crystallinity have been synthesized by a facile and low-cost method. High resolution transmission electron microscopy investigations reveal that the growth follows a catalyst-assisted mechanism. A preliminary investigation of nonlinear o…
Poly(3,4-propylenedioxythiophene)/nano-Zinic Oxide (PProDOT/ZnO) composites with the content of 3–7 wt% nano-ZnO were synthesized by the solid-state method with FeCl3 as oxidant. The structure and morphology of the composites were characterized by Fourier transform infrared (FTIR) spectroscopy, ultraviolet–visible (UV…
EuTiO3 is shown to exhibit novel strong spin-charge-lattice coupling deep in the paramagnetic phase. Its existence is evidenced by an, until now, unknown response of the paramagnetic susceptibility at temperatures exceeding the structural phase transition temperature T(S) = 282 K. The 'extra' features in the susceptib…
We report for the first time a novel erythrocyte-like graphene microsphere (ELGMs) which can be produced with high quality and mass production capability via electrospray assisted self-assembly. Through simple electrospray treatment of GO suspension into coagulation bath followed by chemical reduction, large quantity…
The thermal shock resistance (TSR) of the ultra-high temperature ceramic (UHTC) plate under convective environments is studied. The critical failure temperature difference has a danger temperature range about the thermal shock initial temperature. However, the critical failure dimensionless time decreases as the therm…
Modelling tritium retention in radiation-damaged pure-tungsten samples, the concentration of deuterium retained in the tungsten-ion-induced damage zone decreases with increasing exposure temperature; whereas for a similarly treated tungsten–rhenium alloy, it can drop significantly faster than in pure tungsten, given s…
LaF3:Yb3+/Er3+ upconversion (UC) crystals with self-assembling microstructures have been synthesized via a simple one-pot ionothermal method. X-Ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy were used to characterize the samples…
Orotidine 5'-monophosphate decarboxylase catalyzes the decarboxylation of truncated substrate (1-β-D-erythrofuranosyl)orotic acid to form (1-β-D-erythrofuranosyl)uracil. This enzyme-catalyzed reaction is activated by tetrahedral oxydianions, which bind weakly to unliganded OMPDC and tightly to the enzyme-transition st…
Abstract The effects of various ratios of virgin chloroprene rubber (vCR) and recycled chloroprene rubber (rCR) with a constant content of carbon black (CB) on the properties of natural rubber/chloroprene rubber NR/CR blends were studied. The minimum torque (M L ), maximum torque (M H ), scorch time, and cure time inc…
It is well known that perovskite-type PbTiO3 behaves negative thermal expansion in a wide temperature range from room temperature to Curie temperature (763 K). The present study reports the first-principles study of the anisotropic thermal expansion of PbTiO3, in the framework of the density-functional theory and the…
BACKGROUND: A novel highly conserved protein domain, DUF162 [Pfam: PF02589], can be mapped to two proteins: LutB and LutC. Both proteins are encoded by a highly conserved LutABC operon, which has been implicated in lactate utilization in bacteria. Based on our analysis of its sequence, structure, and recent experiment…
A rapid polymerization technique was successfully employed to synthesize interconnected polyaniline ( PANI ) nanofibers using chemical oxidative polymerization inside a soft template. The thermoreversible hydrogels of Lutrol F 127 and gelatin were used as templates where the interstices present in the hydrogel were re…