Materials Literature
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Organic-metal hybrid nanowires were synthesized by cooperative self-organization of the one-dimensional stacking of tetrathiafulvalene (TTF) via charge-transfer interaction with metallic gold originating from the redox reaction between TTF and gold ions. The nanowires can be easily obtained as purple precipitates just…
Abstract Reclaimed rubber powder (RRP) was treated by the addition of maleic anhydride (MA) to impart desired properties suitable for self‐adhesive sheets and concrete lining applications. The produced MA‐RRP was mixed with natural rubber (NR) with various compositions. A fixed 1 : 1 blend ratio of NR : RRP was reinfo…
The effects of oxygen plasma treatment on epitaxial ZnO thin films grown by molecular beam epitaxy were studied. The Au–ZnO–In junction exhibiting ohmic behaviour before the treatment gradually changes to a Schottky junction with the increase in oxygen plasma treatment time. The crystallinity and the surface microstru…
The room-temperature synthesis of beta-Ga2O3 nanocrystal was examined by coupling two biomimetic crystallization techniques, enzymatic peptide nanoassembly templating and aggregation-driven crystallization. The catalytic template of peptide assembly nucleated and mineralized primary beta-Ga2O3 crystals and then fused…
With maleic anhydride-modified PS (m-PS) microspheres as a template (core) and zinc nitrate and diethanolamine (DEA) as the starting materials, the m-PS/ZnO core−shell structure was synthesized by a wet chemical route. ZnO clusters were synthesized through controlled hydrothermal decomposition of Zn-DEA chelate at 70−…
Solvate-free sodium octahydrotriborate, NaB3H8, is prepared on a 20 gram scale from sodium amalgam and diborane in diethyl ether. This substance, which is chemically related to borohydride-based compounds being investigated as hydrogen storage materials, is also useful for the preparation of transition-metal complexes…
Two-dimensional colloidal suspensions exposed to periodic external fields exhibit a variety of molecular crystalline phases. There two or more colloids assemble at lattice sites of potential minima to build new structural entities, referred to as molecules. Using the strength of the potential and the filling fraction…
A secondary ammonium hydrochloride of the peptidic lipid, in which the l -prolyl- l -prolyl- l -proline fragment is coupled with an l -glutamate derivative carrying two long alkyl chains, self-assembles in water to form nanotube structures and acts as a template to transcribe them to silica nanotubes through sol−gel r…
The synthesis of three libraries of self-assembling hybrid dendrons containing a primary structure based on the sequence (4-3,4-3,5)12G2-CO(2)CH(3) generated from benzyl ether, biphenyl-4-methyl ether, and AB(2) repeat units constructed from (AB)(y)--AB(2) combinations of benzyl ethers, is reported. The structural and…
We report a theoretical investigation of the mechanical properties of idealized networks formed by single-walled carbon nanotubes showing crossbar and hexagonal architectures. The study was performed by using molecular mechanics calculations and impact dynamics simulations based on bond-order empirical potential. The…
Abstract Oxygen production with three operating modes, i.e. high‐pressure operation, sweep‐gas operation, and vacuum operation, using dense La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3−α (LSCF) hollow fiber membrane modules has been investigated both theoretically and experimentally. The results indicate that the vacuum operation…
Graft copolymers of chitosan and PEG-CO(2)H incorporating biologically active molecules and tags (mannose, cholesterol, a coumarin dye, and biotin) at the distal end of poly(ethylene glycol) (PEG) have been synthesized in excellent yields and nearly quantitative mass recoveries. Experimental conditions allowing the pr…
Dielectric properties of glass–ceramics containing barium/lead‐based sodium niobates and barium titanate‐based silicates were evaluated for capacitor applications. The glasses were formed by melt‐rolling the respective constituents which were then crystallized by reheating them at higher temperatures. Crystallization…
Atomic scale density functional calculations are used to predict the behaviour of defects in uranium mononitride (UN). Two different density functional codes (VASP and CASTEP) were employed with supercells containing from 8 to 250 atoms (providing a significant range of defect concentrations). Schottky and nitrogen Fr…
An important frontier in both metallurgy and mechanics is the development of a modelling framework that accurately represents length-scale effects and dislocation structure. Emerging mechanics formulations incorporate a length scale tied to distortion gradients aimed at modelling the effects from geometrically necessa…
Lead borate based glasses have been analyzed using Raman and infrared spectroscopy. The formation of different borate groups and the direction of BO3 <--> BO4 conversion strongly depends on the PbO- and/or PbF2-to-B2O3 ratio in chemical composition. PbF2-PbO-B2O3 based glasses containing Er3+ ions have been studied af…
We show that surface electromagnetic waves (SEMWs) propagating along two-dimensional (2D) interfaces separating different metamaterials can behave analogously to 3D electromagnetic waves in either usual or left-handed media, depending on the permeabilities and/or permittivities of the two materials forming the interfa…
There has long been confusion regarding the origin and temperature dependence of surface energetics and its responsibility for the processes and phenomena at a surface. From the perspective of bonds broken and its consequences on the remaining bonds of the undercoordinated surface atoms, we suggested herewith two esse…
Abstract Two novel complexes based on the Keggin POMs modified by the Cu(4,4′‐bipy) moiety, {[Cu(4,4′‐bipy)] 3 [HSiMo 12 O 40 ]} · 1.5H 2 O ( 1 ) and {[Cu(4,4′‐bipy)] 4 [SiW 12 O 40 ]} · 3H 2 O ( 2 ) (bipy = bipyridine), have been hydrothermally synthesized and characterized by routine physical methods and single‐crys…
This report introduces a Monte Carlo simulation method to quantitatively deconvolute the size-dependent UV−vis absorption spectra of colloidal semiconductor nanocrystals. The method was experimentally verified and then applied for studying the transition stage from net dissolution to Ostwald ripening of CdS nanocrysta…