Materials Literature
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Understanding the structures and stability conditions of emerging liquid crystal (LC) phases brings us a step closer to the crucial understanding of delicate self-assembling nanoscale systems and the consequential impact on their macroscopic properties. We report experimental evidence and a theoretical model for a fer…
An unexpected presence of ferromagnetic (FM) ordering in nanostructured ZnO has been reported previously. Recently, from our detailed magnetization studies and ab initio calculations, we attributed this FM ordering in nanostructured ZnO to the presence of surface states, and a direct correlation between the magnetic p…
The dynamic mechanisms involved in the dehydrogenation of ammonia borane are investigated using quasi-classical trajectory simulations. The effects of solvent and nuclear motion yield qualitatively different results compared to simulations where these considerations are neglected. Not only are rate-limiting barriers s…
In this paper, we review a number of uses of conformal mapping techniques for obtaining director profiles of liquid crystals in confined and semi-confined geometries. In particular, we will consider geometries which allow more than one stable state, some of which are of use in bistable displays. These solutions also a…
The authors report the formation of β-Ga2O3/GaN heterostructure and the fabrication of a β-Ga2O3/GaN bilayer photodetector (PD). It was found that we could control the depletion depth of the device and thus switch the operation mode between solar-blind and visible-blind by simply changing the applied bias. It was also…
The vibrational properties of ErTe${}_{3}$ were investigated using Raman spectroscopy and were analyzed on the basis of peculiarities of the RTe${}_{3}$ crystal structure. Four Raman active modes for the undistorted structure, predicted by factor-group analysis, are experimentally observed and assigned according to di…
Arrays of Au hierarchical micro/nanotowers have been achieved on Au-coated silicon planar substrate, via electrochemical deposition in a mixed aqueous solution of PVP and HAuCl 4 under appropriate electrodeposition conditions. The Au hierarchical micro/nanotower arrays have exhibited distinct surface-enhanced Raman sc…
Laser-optical investigation of the effect of diamond nanoparticles on the structure and functional properties of proteins, Elena V Perevedentseva, Su F.Y., Su T.H., Lin Y.C., Cheng C.L., A V Karmenyan, A V Priezzhev, Andrei E Lugovtsov
Biomimetic cerasome has drawn much attention as a novel drug delivery system because its atomic layer of polyorganosiloxane surface imparts higher morphological stability than conventional liposomes and its liposomal bilayer structure reduces the overall rigidity and density greatly compared to silica nanoparticles. B…
The cornea is a potential route of exposure and drug administration for nanoparticles. In this work, we use noninvasive two-photon microscopic imaging to study the distribution and permeability pathway of CdSe/ZnS core/shell quantum dots (QDs) capped with three different functional groups through the cornea. With no a…
Abstract This review focuses on a new class of elastomers, namely poly[octanediol‐ co ‐(citric acid)‐ co ‐(sebacic acid)] (p(OCS)), synthesised from 1,8‐octanediol, citric acid and sebacic acid in a catalyst‐free polyesterification reaction. The review begins with a detailed description of the synthesis, characterisat…
Wählerische Aggregation: Ein enantiomerenreines Monomer bildet bevorzugt einen supramolekularen Gürtel (siehe Struktur; blau N, rot O, grau C, weiß H) anstelle einer Helix. Eine induzierte Tautomerisierung erzeugt ein dreifaches Wasserstoffbrückenmotiv, das die cyclische homoleptische Aggregation vermittelt.
Following our previous works in which we tried to understand the transport mechanisms below and at the conductivity percolation threshold of three-dimensional ensembles of Si quantum dots (QD's), in the present work we try to derive a comprehensive understanding of the transport mechanisms above the percolation thresh…
Silver antimonate, AgSb${O}_{3}$, in both its defective pyrochlore and ilmenite structural polymorphs, has been suggested as a possible candidate mixed metal oxide for use in the photocatalytic splitting of water in visible light. In this study, we report electronic-structure calculations, using both standard and hybr…
Abstract Two polybutadiene‐graft‐acrylonitrile‐styrene copolymer (PBD‐ g ‐SAN) impact modifiers with different rubber particle size were synthesized by seeded emulsion polymerization. Acrylonitrile‐butadiene‐styrene (ABS) blends with a constant rubber concentration of 15 wt% were prepared by blending those impact modi…
We report that for graphene with a finite band gap (such as semihydrogenated graphene or graphene with spin-orbit coupling), there exists a strong nonlinear optical response for energies lower than the band gap where the linear response is forbidden. At low temperatures, the nonlinear current in graphene with a gap is…
We have explored the effect of Au-nanoparticle (NP)-induced surface plasmons on the performance of polymer-fullerene photovoltaic devices utilizing single-walled carbon-nanotube (SWNT) films as the transparent electrode for hole collection. The Au NPs were produced by ultrafast laser ablation in liquids and were incor…
In control: An enantiomerically pure monomer selects the formation of a supramolecular belt (see structure; blue N, red O, gray C, white H) over a helix. Induced tautomerization allows for a three-hydrogen-bond motif to be employed in cyclic homoleptic aggregation.
A novel multiblock poly(ester urethane) (PBESTU) was synthesized through chain-extension reaction of hydroxyl-terminated poly(butylene succinate) (PBS−OH) and poly(ethylene succinate- co -ethylene terephthalate) (PETS−OH), using toluene-2,4-diisocyanate (TDI) as chain extender. The chemical structure and molecular wei…
Phase-pure polycrystalline Ba0.6K0.4+xFe2As2 with 0≤x≤0.1 were prepared using a one-step solid-state reaction method. We found that overdoping of potassium can improve the critical current density (Jc). High-field Jc for samples with x=0.1 is three times higher than that for samples with x=0. Overdoping of K has minim…