Materials Literature
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The influence of the size of harvested barium titanate nanoparticles on the properties of ferroelectric liquid crystal (FLC) nanocolloids was investigated by electro-optical and dielectric methods. The spontaneous polarization and the switching time are decreased for the liquid crystalline nanocolloids compared to non…
Erfrischendes Sonnenbad: Trägerkatalysatoren mit Au-Cu-Legierungsnanopartikeln vermitteln bei Raumtemperatur unter Bestrahlung mit sichtbarem Licht (λ>450 nm) eine aerobe Oxidation. Dabei ist die Desaktivierung infolge der Oxidation der Cu-Atome durch Sauerstoff gering, weil sie von Au-Atomen in einem durch sichtbares…
OBJECTIVES AND METHODS: Contact angle, as a representative measure of surface wettability, is often employed to interpret contact lens surface properties. The literature is often contradictory and can lead to confusion. This literature review is part of a series regarding the analysis of hydrogel contact lenses using…
Nanorods provide distinct advantages over their spherical counterparts for targeted drug delivery. Here, a novel method is described for the synthesis of biocompatible protein nanorods from spherical polystyrene templates using the layer-by-layer (LBL) technique. These nanorods can be used as a vehicle for the deliver…
Highly conductive and transparent indium-tin oxide (ITO) single-crystalline nanowires, formed by the vapor-liquid-solid (VLS) method, hold great promise for various nanoscale device applications. However, increasing an electrical conductivity of VLS grown ITO nanowires is still a challenging issue due to the intrinsic…
Introduction of the coplanar BO3 triangles in the alkali metal and alkaline-earth metal mixed fluoborate generates a new UV nonlinear optical material [Li3Ca9(BO3)7]·2[LiF] (LCBF), which possesses a moderate SHG response as large as that of the KDP and a wide transparent region with a UV cutoff edge at 230 nm. The fir…
In this work, a highly sensitive and stable sensing scaffold consisting of gold nanoparticle-encapsulated TiO2 nanotubes, the hydrophilic ionic liquid, 1-decyl-3-methylimidazolium bromide, and Nafion was developed for the fabrication of electrochemical enzyme biosensors. A significant aspect of our work is the applica…
Abstract The morphology and the electronic properties of monocrystalline Si (c‐Si) with a nano‐textured “black” surface, obtained by a metal‐catalyzed wet etching process, and the improvement by an additional chemical treatment are examined with regard to solar cell applications. Photoluminescence and optical reflecti…
Nitrogen-doped and pure carbon nanotube (CNT) based composites were fabricated for investigating their dielectric properties in static regime as well as electromagnetic response properties in microwave frequency range (Ka-band). Two classes of host matrix—polystyrene and phosphate unfired ceramics—have been used for c…
Polarized Raman-scattering spectra of superconducting, single-crystalline FeSe evidence pronounced phonon anomalies with temperature reduction. A large ($\ensuremath{\sim}6.5%$) hardening of the ${B}_{1g}$(Fe) phonon mode is attributed to the suppression of local fluctuations of the iron spin state with a gradual decr…
A small-strain two-dimensional discrete dislocation plasticity (DDP) framework is developed wherein dislocation motion is caused by climb-assisted glide. The climb motion of the dislocations is assumed to be governed by a drag-type relation similar to the glide-only motion of dislocations: such a relation is valid whe…
Unprecedented geminal tetraauration of acetonitrile has been realized through C-H activation by Au(I)-Ag(I) clusters under mild conditions. The reaction of [OAu3Ag(dppy)3](BF4)2 (dppy = diphenylphosphino-2-pyridine) (1), AgBF4, and acetonitrile in the presence of methanol at room temperature resulted in the isolation…
Abstract Silk fibroin from Bombyx mori silk cocoons was electrospun into silk nanofibers ( SNFs ). SEM images show that 9% w/v of SNFs was smooth and beadless having an average diameter in the range 30–150 nm. Curcumin (0.5–1.5 wt%) was incorporated into the silk fibroin solution and electrospun to obtain curcumin inc…
Green chemistry of industrially important zein protein was explored in aqueous phase toward the synthesis of bioconjugated gold (Au) nanoparticles (NPs), which allowed us to simultaneously understand the unfolding behavior of zein with respect to temperature and time. Synthesis of Au NPs was monitored with simultaneou…
Molecular dynamics (MD) simulations of supercapacitors with single-walled carbon nanotube (SWCNT) electrodes in room-temperature ionic liquids were performed to investigate the influences of the applied electrical potential, the radius/curvature of SWCNTs, and temperature on their capacitive behavior. It is found that…
Under ambient conditions, spin impurities in solid-state systems are found in thermally mixed states and are optically "dark"; i.e., the spin states cannot be optically controlled. Nitrogen-vacancy (NV) centers in diamond are an exception in that the electronic spin states are "bright"; i.e., they can be polarized by…
We present a theoretical study of population inversion and negative dynamic conductivity in intrinsic graphene in the terahertz (THz) frequency range upon pulse photoexcitation at near-/mid-infrared wavelengths. The threshold pulse fluence required for population inversion and negative dynamic conductivity can be orde…
With the advancement of drug delivery systems based on mesoporous silica nanoparticles (MSNs), a simple and efficient method regulating the drug release kinetics is needed. We developed redox-responsive release systems with three levels of hindrance around the disulfide bond. A model drug (rhodamine B dye) was loaded…
Souffreau C., Vanormelingen P., Sabbe K. and Vyverman W. 2013. Tolerance of resting cells of freshwater and terrestrial benthic diatoms to experimental desiccation and freezing is habitat-dependent. Phycologia 52: 246–255. DOI: 10.2216/12–087.1For a wide range of organisms, dormancy is a strategy to overcome adverse c…
We found that constrained shape memory natural rubber (SMNR) generates mechanical stress when exposed to solvent vapor. When the solvent vapor is removed, the material reprograms itself. This process is reversible and the stress answer is proportional to the solvent vapor concentration. Further, the stress answer is s…