Materials Literature
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The applications of Ti and its alloys are limited to high-performance products because of expensive cost and poor plastic formability. In this study, pure Ti powder was consolidated by using spark plasma sintering (SPS), warm compaction and cold compaction, respectively. The mechanical properties of the hot-extruded p…
A biomimetic strategy for the monofunctionalization of a calix[6]arene core is described. It is based on host-guest chemistry (mimicking the Michaelis-Menten adduct in enzymes) and allows the finely tuned pre-organization of the substrate (an alkyne) with respect to the reactant (three azido groups introduced at the c…
Abstract This article provides a concise summary of recent research progress, including synthetic strategies, structural diversity, theoretical studies, and third‐order nonlinear optical (NLO) properties, on Mo(W)/S(Se)/Ag heterobimetallic clusters. It offers a preliminary analysis of their metal‐cation‐directed synth…
INTRODUCTION: Bracken (Pteridium spp) illudane glycosidess are labile biologically active terpenoids that undergo decomposition in mild alkali or acid, heat and enzymatic reactions. Hypothetically, quantitation of these weakly chromophoric carcinogens may be challenged by plant sample preparation procedures that may a…
Integrated planar photonic crystal circuits in silicon on insulator were fabricated with a single-etch-step process by a foundry using complementary metal-oxide-semiconductor processing techniques. The devices studied integrate three key elements: i) input/output grating couplers consisting of 2D uniform arrays of hol…
Nanoporous carbons with a high specific surface area were prepared directly from thermoplastic acrylic resin as carbon precursor and MgO powder as template by carbonization over the temperature range, $500-1000^{\circ}C$ . The effect of the carbonization temperature on the pore structure and $CO_2$ adsorption capacity…
A series of optically active, helically twisted [1 + 1]macrocycles connected via o-, m-, and p-linkages (o-, m-, and p-) was prepared from the corresponding linear duplexes stabilized by complementary amidinium-carboxylate salt bridges bearing two arms with terminal vinyl groups at both ends through the ring-closing m…
Cross-linked polymer networks with orientational order constitute a wide class of soft materials and are relevant to biological systems (e.g., F -actin bundles). We analytically study the nonlinear force–extension relation of an array of parallel-aligned, strongly stretched semiflexible polymers with random cross-link…
Phase equilibria in the ternary systems K 2 SO 4 –K 2 B 4 O 7 –H 2 O and Na 2 SO 4 –Na 2 B 4 O 7 –H 2 O at 348 K were studied by the isothermal solution saturation method. The solubilities and densities of the solution in these ternary systems were determined experimentally. Using the experimental data, the phase diag…
In vitro toxicity assays based on the evaluation and retention of advanced and specific cellular functions are proposed to investigate mesoporous silicon nanovectors. This approach provides greater insight compared to simple cellular viability and toxicity assays. Electron microscopy images demonstrate internalized na…
In this study, a 0.25 LiFe 5 O 8 –0.75 Li 2 ZnTi 3 O 8 solid solution ceramic was developed via the solid‐state reaction method. Its phase evolution, microstructure, and sintering behavior were investigated and it was found that the 25 mol.% LiFe 5 O 8 phase is almost fully soluble in Li 2 ZnTi 3 O 8, and only the Li…
The measurement of near-infrared (NIR) cathodoluminescence (CL) with sufficient sensitivity to allow full spectral mapping has been investigated through the application of optimized grating spectrometers that allow the ultraviolet (UV), visible, and NIR CL spectra to be measured simultaneously. Two optical spectromete…
We report on the effect of halide doping on the Aerosol-assisted Chemical Vapour Deposition of tin oxide. Specifically, the importance of precursor interactions is highlighted. A halide exchange reaction involving part substitution of the tin precursor is believed to occur in the solvent; the complex acting as a marke…
α‐Butyl ω‐N, N‐dihydroxyethyl aminopropylpolymethylhydrosiloxane (PDMS), a monotelechelic polydimethylsiloxane with a diol‐end group, which is used to prepare siloxane–urethane dispersion, was successfully synthesized. Then, novel silicone‐based polyurethane (PU)‐dispersion was prepared by the addition polymerization…
Abstract This article presents a fractal design methodology for frequency selective surfaces (FSSs) by printing a finite planar array of Vicsek fractal metallic patches on a single dielectric layer. Shapes presented by the Vicsek fractal as a function of the fractal parameters (level and scale factor) were exploited t…
Light-weight solid foams are utilized in applications such as packaging and insulation mainly due to their intrinsically high porosity, low relative density and associated mechanical and transport properties. Here hollow core spherical shells are prepared with walls made of a polyhedral silica nanofoam with open cells…
Fluorescent organic molecules that respond to changes in the $Fe^{2+}$ concentration with selectivity to other abundant di-valent metal ions will offer the ability to understand the dynamic fluctuations of the $Fe^{2+}$ ion in interesting media. The use of 6-Br-ppmbi, derived from 2-pyridin-2-yl-benzimidazole, for met…
The ionic liquid precursor tetrabutylammonium hydroxide (TBAH) is used to synthesize In(OH)3 particles. The ionic liquid TBAH is demonstrated to be effective for the synthesis of In(OH)3 nanorods with a controlled size. The effect of the indium salt and the added water amount on the final products is investigated. The…
Abstract Energetic crystals with nanoparticle inclusions were preparated and characterized, focusing on the nanosized iron(III) oxide‐ammonium perchlorate system, generated using an ethyl acetate/acetone antisolvent:solvent system. It is shown that capture is dependent on antisolvent‐to‐solvent ratio; increased quanti…
The quantum spin Hall insulator is characterized by the presence of gapless helical edge states where the spin of the charge carriers is locked to their direction of motion. In order to probe the properties of the edge modes, we propose a design of a tunable quantum impurity realized by a local gate under an external…