Materials Literature
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Anisotropically phase-segregated nanoparticles, so-called patchy nanoparticles, are promising materials, because the close coupling of different components on the nanoscale may significantly improve application performance, or even create new properties. We review the seed-mediated synthesis of various kinds of metal…
Hyperbranched poly(amido amine) is grown from the surface of carbon nanotubesvia a multi-step Michael addition reaction, hence the amido and amine units are linked onto the surface of carbon nanotubes. These amido and amine units can facilitate the assembly of carbon nanotubes with other functional polymersviahydrogen…
Stress corrosion cracking (SCC) has been reported at the aged components in many nuclear power plants. Toshiba has been developing the underwater laser welding. This welding technique can be conducted without draining the water in the reactor vessel. It is beneficial for workers not to exposure the radiation. The weld…
We discuss transport through double-gated single- and few-layer graphene devices. This kind of device configuration has been used to investigate the modulation of the energy band structure through the application of an external perpendicular electric field, a unique property of few-layer graphene systems. Here we disc…
To improve driving safety,the authors propose an approach to locate a driver's mouth by a web camera and extract texture features from mouth comers for monitoring drivers' yawning.Firstly,it detects drivers' left and right mouth corners by gray projection based on the result of driver face detection,and then it extrac…
A new mononuclear low-spin nickel(II) dithiolato complex, [NiL(2)] (1), reacts with copper iodide to form the hetero-octanuclear cluster [{Ni(L)(2)}(2)(CuI)(6)] (2) with four trigonal-planar CuI(2)S and two tetrahedral CuI(2)S(2) sites; anagostic interactions between the nickel(II) ions and aromatic protons have been…
Large area arrays of patterned carbonate nanofibers have been constructed viapolymer controlled mineralization. Micropatterned octadecyltrichlorosilane (OTS)-coated domains on the smooth substrate were found to preferentially deposit mineral films, which could act as a secondary template for growth of nanofibers after…
The thermoluminescence (TL) properties of a well-characterised natural α-cristobalite from Lanzarote (Canary Islands, Spain) have been studied. The natural blue emission (at 400 nm) of this silica polymorph of quartz reveals the appearance of three groups of components peaked at 150, 230–240 and 370 °C, which could be…
We show that suspended nano and microfibres electrospun from liquid crystalline cellulosic solutions will curl into spirals if they are supported at just one end, or, if they are supported at both ends, will twist into a helix of one handedness over half of its length and of the opposite handedness over the other half…
A novel spherical ordered mesoporous carbon with a high surface area and cage-type porous structure was prepared by direct carbonization of silica/triblock copolymer/butanol composite using F127 and butanol as both structure-directing agent and carbon precursor.
The corrosion behavior of a pure aluminum/pure magnesium couple in a weakly conductive sodium sulfate solution was investigated. Potential and current distributions on the surface of the model couple at the beginning of immersion were obtained by solving the Laplace equation using a finite element method algorithm. Ma…
Changes occurring in jute and coir fiber composites with 2–8% concentration of a NaOH treatment for 24 h were investigated, respectively, for void content, microscopy images, mechanical properties and water absorption. The jute and coir fibers were vacuum dried before molding composite specimens. Mechanical properties…
The purpose of this research is to experimentally and numerically evaluate the mechanical performance of carbon nanotube (CNT)-reinforced polymer composites subjected to tension in a cryogenic environment. Cryogenic tensile tests were conducted on CNT/polycarbonate composites to identify the effects of CNTs on their t…
Hollow silica spheres with holes on the shells were prepared using l-16Ala6PyBr via a sol-gel method.
Donor–π–acceptor type pyridinium dyes that have been newly synthesized showed bathochromic shift of the absorption band with decreasing dielectric constant (εr) of solvent (negative solvatochromism), and the bathochromic shifts in halogenated solvents were larger than those in non-halogenated solvents of similar εr va…
A 1-cyano-1,2-bis(biphenyl)ethene derivative having hexa(ethylene glycol) groups as amphiphilic side chains showed aggregate-induced enhanced emission in water; upon heating the intensity of the enhanced emission was attenuated in a lower temperature range than the temperature range where exciton interaction is still…
Pristine and shorted multi-walled carbon nanotubes (pMWCNT and sMWCNT, respectively) non-covalently modified with a block copolymer (poly[sodium (2-sulfamate-3-carboxylate) isoprene-b-styrene]—abbreviated as CSI) are used for the formation of CdS semiconductor nanohybrids. The CdS nanoparticles are preferentially loca…
We compare the electronic structures of metal(II) (Co, Ni, Cu) phthalocyanines adsorbed on conducting and insulating substrates: Au(111) and the organic ferroelectric polyvinylidene fluoride (PVDF). The different 3d orbital contributions to the metal phthalocyanines result in different substrate interactions, and diff…
AIM: To present three patients with ocular disease who developed a range of complications following use of traditional medications. SETTINGS AND DESIGN: Case series METHODS: Three patients who were examined in the Ophthalmic department of a tertiary care teaching hospital in the Sultanate of Oman between 2003 and 2004…
Mesoporous oxide fibers were prepared in one-pot by permeating surfactant-containing clear precursor solutions into the confined spaces of polycarbonate membranes and subsequent calcination.