Materials Literature
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The reduction of the Ag(111)-p(4x4)-O surface oxide with CO was used to study the restructuring of the surface during reaction. Scanning tunneling microscopy images taken during the reaction show the formation of Ag islands and pits within the reacted areas surrounded by unreacted p(4x4)-O. The number of Ag adatoms in…
The phonon symmetry of a series of Aurivillius compounds ${[{\mathrm{Bi}}_{2}{\mathrm{O}}_{2}]}^{2+}$${[{A}_{n\ensuremath{-}1}{B}_{n}{\mathrm{O}}_{3n+1}]}^{2\ensuremath{-}}$ is studied by a site symmetry analysis of bulk crystals followed by the consecutive analysis of their common structural subunits, i.e., the metal…
Abstract Three new thioantimonate(III) complexes [Ni(1,2‐PDA) 3 ]Sb 4 S 7 ( 1 ) (1,2‐PDA = 1,2‐propanediamine), [dmenH 2 2+ ]Sb 8 S 13 · H 2 O ( 2 ) (dmen = N , N ‐dimethylethylenediamine), and [deenH 2 2+ ]Sb 10 S 16 · H 2 O ( 3 ) (deen = N , N ‐diethylethylenediamine), prepared under solvothermal conditions, have be…
Investigation into the effect on the rheological, physico – mechanical and swelling properties of natural rubber vulcanizates using coconut fibre as fillers were carried out. The coconut fibre was characterized in terms of pH, moisture content, ash content, loss on ignition, conductivity, particle size and surface are…
Nanopowder of yttrium aluminum garnet (YAG, Y3Al5O12) doped with neodymium ions (Nd:YAG) was prepared in the water/cetyltrimethylammonium bromide/1-butanol/n-heptane system. Aluminum, yttrium, and neodymium nitrates were used as starting materials, and ammonia was used as a precipitating agent. Coprecipitate hydroxide…
Reactions between [M'(III)(CN)(6)](3-) anions (M' = Co, Cr, or Fe) and mononuclear complexes of M(II) ions (M = Cr, Mn, Co, Ni, or Zn) produce a family of pentanuclear clusters {[M(tmphen)(2)](3)[M'(CN)(6)](2)]}. The core of the clusters is formed by five metal ions that are bridged through six CN- linkers into a trig…
Abstract We synthesized a novel low‐band‐gap, conjugated polymer, poly[4,7‐bis(3′,3′‐diheptyl‐3,4‐propylenedioxythienyl)‐2,1,3‐benzothiadiazole] [poly(heptyl 4 ‐PTBT)], consisting of alternating electron‐rich, diheptyl‐substituted propylene dioxythiophene and electron‐deficient 2,1,3‐benzothiadiazole units, and its ph…
We have performed bulk and surface-sensitive inelastic x-ray scattering experiments on liquid indium with 3 meV energy resolution. The experimental data are well reproduced within a generalized hydrodynamic model including structural and microscopic relaxation processes. We find a longitudinal viscosity of 22 mPa s in…
We demonstrate via computer simulation that mixtures of colloids and polymers confined to thin films have the ability to undergo an interface localization transition. While one wall of the film is assumed to be hard for both particles, at the other wall, an additional repulsive potential acts, but on the colloids only…
Crystallization from solutions is an important technique for a wide range of industries. One of the prime requirements for crystallization is that molecular aggregation or clustering occurs prior to the formation of stable nuclei. Despite this, very little work has been carried out to investigate the nature of supersa…
Purpose The present work aims to focus on the simulation of tensile, shear and bending deformation of the plain‐weft knitted fabrics in an analogous manner to the tests performed on the Kawabata Evaluation System for Fabrics. Design/methodology/approach The simulation of the tests is based on the modelling of the fabr…
Ceria has become a very important material for catalytic applications. Many applications take advantage of its high oxygen storage capacity (OSC). We propose a new polycrystalline multilayered nanotube structure that could go some way to further unlocking the oxygen storage capabilities of the material. We illustrate…
The reaction of Hg(TePh)2 with AgX (X = Cl, NO3) in the presence of PPh3 and PMePh2 in dimethylformamide (DMF) affords the cluster [Hg6Ag4(TePh)16] (1) at room temperature or [Hg6Ag4Te(TePh)14]2 (2) with heating. When Hg(TePh)2 is reacted with [Co(PPh3)2Cl2] or [Ni(PPh3)2Cl2], the clusters [Hg8Te(PhTe)12Cl4]Q [3; Q =…
An efficient optimization method for the crystallization of biological macromolecules has been developed and tested. This builds on a successful high-throughput technique for the determination of initial crystallization conditions. The optimization method takes an initial condition identified through screening and the…
Abstract Ultrasound irradiation is used for anchoring silver nanoparticles with an average size of ∼ 51 nm onto the surface of poly(methyl methacrylate) PMMA chips (2 mm diameter), and silver nanoparticles with an average size of ∼ 20 nm onto the surface of the PMMA spheres (1–10 μm). The sonochemical reduction was ca…
A photonic relative-humidity (RH) sensor employing the guided-mode resonance effect is designed, fabricated, and characterized. An agarose-gel transduction layer is integrated with a periodic silicon-nitride film to form a sensitive optical resonance structure. As the agarose-gel humidifies, the resonance wavelength s…
Altitudinal gradients provide excellent opportunities to study relationships between species distribution and climatic variables. We studied the species composition of 39 samples of moss-inhabiting diatoms, collected at 50 m intervals from 100–650 m above sea level. The samples contained a total of 130 diatom species,…
The authors use the analytical equation of state obtained by the discrete perturbation theory [A. L. Benavides and A. Gil-Villegas, Mol. Phys. 97, 1225 (1999)] to study the phase diagram of fluids with discrete spherical potentials formed by a repulsive square-shoulder plus an attractive square-well interaction (SS+SW…
Abstract Electrospinning can produce tissue‐engineering scaffolds possessing appropriate strength, biomimetic structure, economic appeal, and biocompatibility. To investigate how microstructural changes could potentially affect adherent mammalian cells, tensile samples were strained to 10, 40, and 80% extension, and a…
The d8...d10 heterobimetallic RhIAuI(tfepma)2(CNtBu)2Cl2 (1) complex (tfepma = bis[bis(trifluoroethoxy)phosphino]methylamine) is oxidized by KAuIIICl4 to give the first structurally characterized d7-d9 RhII-AuII singly bonded metal complex [RhIIAuII(tfepma)2(CNtBu)2Cl3]+[AuICl2]- (2). Complex 2 undergoes a thermal int…