Materials Literature
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Epitaxial films of In(2)O(3) have been grown on Y-stabilised ZrO(2)(111) substrates by molecular beam epitaxy over a range of thicknesses between 35 and 420 nm. The thinnest films are strained, but display a 'cross-hatch' morphology associated with a network of misfit dislocations which allow partial accommodation of…
We demonstrate the broadening of fundamental resonance in terahertz metamaterial by successive insertion of metal rings in the original unit cell of a split ring resonator (SRR) forming an inter connected nested structure. With the subsequent addition of each inner ring, the fundamental resonance mode shows gradual br…
Nano-zirconium-oxide (nano-Zr-oxide) and nano-silver-oxide (nano-Ag-oxide) were in situ synthesized and deposited into cotton gauze fabrics by reduction of zirconium oxychloride or silver nitrate solutions, in the presence of fabric samples using sodium hydroxide-hydrogen peroxide mixture solution at pH 9.5. The resul…
In the present study, the effect of the polymeric additive Pluronic F127 on the growth rate of Ibuprofen (IBU) crystals from ethanol–water mixtures and its temperature and additive concentration dependence is investigated quantitatively. It is found that the addition of Pluronic F127 (PF127) to the solvent mixture slo…
Abstract The dispersion of carbon nanotubes (CNTs) in liquid plays an important role in fundamental research and applied science. The most common technique applied to disperse CNTs is ultrasonication. The surfactants used for CNT dispersion are ethanol, sodium dodecyl benzenesulfonate (SDBS), dodecyltrimethylammonium…
Using time-resolved far-infrared spectroscopy, we observe multiple routes for photoinduced phase transitions in V(2)O(3). This includes (i) a photothermal antiferromagnetic to paramagnetic transition and (ii) an incipient strain-generated paramagnetic metal to paramagnetic insulator transition, which manifests as cohe…
Abstract The effect of a series of polar, amphiphilic, and non‐polar solvents of various molecular weights on the glass transition ( T g ) of polyamide 6,6 (PA66) amorphous phase was studied. The sorption at equilibrium was measured by immersing the polymer in each solvent. Differential scanning calorimetry (DSC) and…
A flax-reinforced sandwich structure suitable for replacing wood in the top plates of string musical instruments was developed. The mechanical properties of Sitka spruce, the most widely used wood species for this application, were taken as a benchmark when the new materials were developed. The materials were characte…
In this paper, a novel catalyst, titanate nanotube (TNT) confined CeO 2 was designed and synthesized. Such catalyst showed a remarkable resistance to alkali metal poisoning in deNO x application. The catalyst effectively shielded the main active phase, CeO 2, from the poisons with the tubular channel of H 2 Ti 12 O 25…
A potential antitumoral fluorescent indole derivative, methyl 6-methoxy-3-(4-methoxyphenyl)-1H-indole-2-carboxylate, was evaluated for the in vitro cell growth inhibition on three human tumor cell lines, MCF-7 (breast adenocarcinoma), A375-C5 (melanoma), and NCI-H460 (non-small cell lung cancer), after a continuous ex…
We used a quantum Monte Carlo method to study the magnetic impurity adatoms on graphene. We found that by tuning the chemical potential we could switch the values of the impurity local magnet moment between relatively large and small values. Our computations of the impurity spectral density found its behavior to diffe…
A systematic study of the Cu-catalyzed chemical vapor deposition of graphene under extremely low partial pressure is carried out. A carbon precursor supply of just$\it P$$\bf_{CH_4}$$\sim$0.009 mbar during the deposition favors the formation of large-area uniform monolayer graphene verified by Raman spectra. A diluted…
In this work, we systematically investigated the morphologies of polymers prepared by chemical oxidation of aniline and methyl-, methoxy-, or ethoxy-substituted aniline under the same experimental conditions. No matter the presence or absence of 10-camphorsulfonic acid (CSA), the oxidation of aniline produces nanotube…
CdS nanocrystalline materials have been prepared by reaction of Cd(II) ions with an alkaline solution of thiocarbamide in the aqueous solution phase. The effect of reaction time and surfactants (cetyltrimethyl ammonium bromide (CTAB), sodium dodecyl sulfate (SDS)) on morphology and size of the products has been invest…
Doping of TiO(2) is a very active field, with a particularly large effort expended using density functional theory (DFT) to model doped TiO(2); this interest has arisen from the potential for doping to be used in tuning the band gap of TiO(2) for photocatalytic applications. Doping is also of importance for modifying…
Bioimaging and therapeutic agents accumulated in ectopic tumors following intravenous administration of hybrid nanocrystals to tumor-bearing mice. Solid, nanosized paclitaxel crystals physically incorporated fluorescent molecules throughout the crystal lattice and retained fluorescent properties in the solid state. Hy…
Effect of polymer concentration and composition on the electro-optic properties of blue phase liquid crystal (BPLC) composites is investigated. By increasing the polymer concentration, a more stable structure and faster response time are obtained, while keeping a low hysteresis (~ 3%). The major tradeoff is the increa…
Nanoparticles conjugated with functional ligands are expected to have a major impact in medicine, photonics, sensing, and nanoarchitecture design. One major obstacle to realizing the promise of these materials, however, is the difficulty in controlling the ligand/nanoparticle ratio. This obstacle can be segmented into…
Molybdenum disulfide (molybdenite) monolayer islands and flakes have been grown on a copper surface at comparatively low temperature and mild conditions through sulfur loading of the substrate using thiophenol (benzenethiol) followed by the evaporation of Mo atoms and annealing. The MoS(2) islands show a regular Moiré…
Protein adsorption onto brush displaying surfaces is strongly affected by collapse, an effect utilized in protein chromatography and in harvesting cell sheets for tissue engineering applications. For relatively small particles, the free energy penalty incurred upon insertion into the brush F ins is related to the work…