Materials Literature
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The in- and out-of-plane lower critical fields and magnetic penetration depths of LiFeAs were examined. The anisotropy ratio Γ H c 1 (0) was smaller than the expected theoretical value, and increased slightly with increasing temperature from 0.6 T c to T c . The small degree of anisotropy was numerically confirmed by…
The polarized Raman spectra of the inverse spinel LiFe${}_{5}$O${}_{8}$ (LFO) were studied for both B-site-ordered ($\ensuremath{\alpha}$) and B-site-disordered ($\ensuremath{\beta}$) phases. The symmetry of all the Raman lines was determined and an assignment to phonon modes involving specific atomic motions was done…
During the operation of the UN and NATO forces in Africa and Asia it appeared that the equipment held and utilized by these organizations was not proof against the missiles being shot by rocket propelled grenades. The missiles utilized by the terrorist organizations belong to the first generation. They have a head wit…
The unusual photophysical properties of the π-conjugated chromophores make them potential building blocks of various molecular devices. In particular, significant narrowing of the HOMO-LUMO gaps can be observed as an effect of functionalization chromophores with polycyclic aromatic hydrocarbons (PAHs). In this paper w…
Urea thermolysis and isocyanic acid hydrolysis over three kinds of zeolites are investigated experimentally and the main decomposition products, NH 3 and HNCO, are focused on. The results gained using thermogravimetric analysis with heating rates of 2 °C/min from 50–500 °C show NH 3 releases mainly in 133–250 °C and t…
Understanding the process that drives an undercooled fluid to the crystal state is still a challenging issue for condensed matter physics and plays a key role in designing new materials. The crystallization kinetics and the resulting polycrystalline morphology are given by a complex interplay of crystal nucleation, gr…
Absorption, photoluminescence, and Raman scattering measurements have been performed on a fourfold alkoxy-substituted phthalocyanine in solution and in the discotic liquid crystal phase. As already known for this class of compounds, the features of the electronic spectra in the condensed state are determined by the sp…
Steady-state and time-resolved emission techniques have been employed to study the fluorescence properties of thioflavin-T (ThT) adsorbed on oxidized porous silicon (PSi) surfaces, with an average pore size of ∼10 nm. We found that the average fluorescence decay time of ThT, when it is adsorbed on the PSi surface, is…
Interconnected microcellular polymeric monoliths have been prepared from oil-in-water concentrated emulsions of aqueous 1-vinyl-1,2,4-triazole using the high internal phase emulsion methodology. The polyHIPE materials thus obtained present a typical polyHIPE morphology having unexpectedly high mechanical strengths con…
In this contribution a facile, one-step synthesis of tridentate thiol-functionalized PEO ligands and their ability to stabilize CdSe/CdS/ZnS core-shell-shell nanoparticles in aqueous media are described. The PEO-coated quantum dots show colloidal stability as well as preserved fluorescence even at very low concentrati…
UNLABELLED: The use of edible coatings and mild heat shocks is proposed as postharvest treatments to prevent microbial deterioration of refrigerated broccoli. Minimally processed broccoli was coated with either chitosan or carboxymethyl-cellulose (CMC) combined or not with a previous application of a mild heat shock.…
An angiogenic microfiber patch that releases angiogenic growth factors along aligned fibers and subsequently directs the spacing and orientation of mature and functional blood vessel formation is presented. The fiber patches are prepared by electrostatically binding electrosprayed vascular endothelial growth factor (V…
ABSTRACT In this paper, we present a novel design of a surface nanostructure that suppresses the reflectivity and provides forward diffraction for light trapping. The structure under study comprises periodic nanoislands fabricated using self‐assembly polystyrene spheres, which are applicable to large‐area fabrication.…
STEM can make a large difference: Conventionally the catalysis community has used HRTEM (figure, left) imaging to obtain the particle size distribution (PSD) of supported catalysts. Now we have found that by using the analogous HAADF-STEM (figure, right) a more accurate PSD can be calculated, which is crucial for unde…
A novel SERS sensor for adenine molecules is fabricated electrochemically using an ordered two-dimensional array of self-aligned silver nanoparticles encapsulated by alumina. Silver is electro-deposited on the interior surfaces at the bottom of nano-channels in a porous anodic aluminum oxide (AAO) film. After etching…
Thermal cycling of generators, occurring during intermittent operation of power stations, increases the thermomechanical stress on the stator groundwall insulation and can, therefore, contribute to failure of the generator. Thermal cycling stresses can, to some extent, be replicated and accelerated in laboratory tests…
The phylum Crenarchaeota includes hyperthermophilic micro-organisms subjected to dynamic thermal conditions. Previous transcriptomic studies of Sulfolobus solfataricus identified vapBC6 as a heat-shock (HS)-inducible member of the Vap toxin-antitoxin gene family. In this study, the inactivation of the vapBC6 operon by…
The decomposition of CuH nanoparticles in aqueous solution has been successfully developed as a novel method for the preparation of Cu2O nanoparticles. In particular, we found that the decomposition of CuH nanoparticles in aqueous solution could be catalyzed by Au colloids, forming Cu2O-Au nanocomposites. The composit…
Abstract Due to the toxicity of aromatic oils derived from polycyclic aromatic hydrocarbons (PAHs), safe process oils are required for a replacement in rubber compounds. The properties of tire tread compounds filled with high abrasion furnace black (HAF) when epoxidized palm oil (EPO) and epoxidized soybean oil (ESBO)…
BACKGROUND: The ideal scaffold material should provide immediate capacity to bear mechanical loads and also permit eventual resorption and replacement with native tissue of similar mechanical integrity. Scaffold characteristics such as fiber diameter provide environmental cues that can influence cell function and diff…