Materials Literature
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Composite MoS 2 /carbon nanotube material has been produced by hydrothermal decomposition of a mixture of multiwall carbon nanotubes (CNTs) and a water solution of ammonium molybdate and thiourea. Transmission electron microscopy and Raman spectroscopy showed formation of MoS 2 layers on the CNT surface and MoS 2 flak…
A facile strategy for the large-scale fabrication of Bi2S3 nanodots is presented. Surface modification and control over the size of the nanodots is easily achieved. The as-prepared hydrophilic Bi2S3 nanodots exhibit long in vivo circulation time and, more significantly, a contrast efficacy higher than that of the clin…
Domain wall conduction in insulating Pb(Zr(0.2) Ti(0.8))O(3) thin films is demonstrated. The observed electrical conduction currents can be clearly differentiated from displacement currents associated with ferroelectric polarization switching. The domain wall conduction, nonlinear and highly asymmetric due to the spec…
The cover shows a scanning electron microscopy (SEM) image of graphene-like crystals of Ti3C2 called MXene. On page 4248 Yury Gogotsi, Michel W. Barsoum, and co-workers describe the exfoliation of Ti3AlC2, a member of a 60+ group of layered ternary carbides and nitrides known as MAX phases, by etching the aluminum out…
Abstract Titanium dioxide (TiO2) is a unique material that can be used as an excellent photocatalyst, hence it will be very useful to solve the current world pollution problem. For photocatalytic application, the cold spray process, which uses supersonic high velocity technique at moderate temperature is considered to…
Ti-rich Mg1ЎxTi1+xO3 samples were synthesized by solid-state reaction. Sampleswere characterized by room temperature x-ray powder di®raction, scanning electron microscopyand energy dispersive spectroscopy of x-rays. Hexagonal lattice parameters a and c increasedwith increasing Ti content. Time-of-Flight-Secondary-Ion-…
Simple and up-scalable production of carbon nanotubes (CNTs) still remains difficult with current production methods. Plasma enhanced chemical vapour deposition (PECVD) provides an excellent method for producing high purity and large amounts of carbon nanotubes. This work demonstrates how PECVD can be used to tailor t…
Influence of developed technology of integrated processing (vibration treatment with the following chrome plating) is specified. Videlicet, the linear relationship between the force indentation, radius of deforming element and the thickness of chromium.
Novel low-angle bent molecules with 1,7-naphthalene central core and alkylthio tails form the hexagonal columnar phase as well as the well-known B4 phase. The columnar phase has a large two-dimensional hexagonal lattice of 65–70 Å and exhibits the antiferroelectric switching with the spontaneous polarization along the…
Tailoring rheological properties of colloidal suspensions with the adsorption of polyelectrolyte multilayers (PEMs) is based on the idea of controlling macroscopic mechanical properties by modifying the particle surface in a reproducible and well-understood manner. With layer-by-layer self-assembly, monodisperse polys…
A portable fibre optic dosimeter has been developed that uses transparent fluroperovskite dosimeters at the end of a multimode polymer fibre. It uses two stimulation sources that take advantage of the bimodal trap distribution so that the dose rate and cumulative dose can be monitored. Photoluminescence (PL), opticall…
The settling of marine diatoms Amphora coffeaeformis onto a photocatalytic titanium dioxide surface was monitored by ATR-IR. Attachment of the diatoms via their mucilaginous secretions was monitored via observation of protein amide I and II linkages, carboxylate linkages from a uronic acid polysaccharide, and sulfate…
Abstract Recent developments in hybrid low pressure thermal spray technologies such as Plasma Spray-Thin Film (PS-TF), PS-PVD, PS-CVD are being increasingly used to develop functional inorganic coatings and films for emerging high end energy applications. The requirements of such coatings and films are more highly spe…
We report on room temperature electroluminescence (EL) from n–n isotype heterostructures composed of Al-doped graded-band-gap Zn 1− x Mg x O (g-ZnMgO : Al) and ZnO films fabricated on Pt/Ti/SiO 2 /Si substrates. The isotype heterostructure device generated EL emission at operation voltages as low as 3–5 V, whose emiss…
The structure of kapok fiber was characterized using FTIR and <TEX>$^{13}C$</TEX>-NMR spectrometers, elemental analyzer, x-ray diffractometer, SEM and IMT I-Solution ver 7.5. The kapok has a hollow tube shape and is composed of cellulose I with crystallinity of 47.95%. To develop novel oil-sorbent materials necessary…
Solid-state welding takes place during the extrusion of hollow shapes and tubes made from selected metals such as aluminum and magnesium and their alloys. DEFORM TM is one of the most frequently used FEM software packages to analyze the metal flow in deformation processes. However, it has some limitations while applie…
Bio-ethanol based fuel cell is an energy source with a promising future. The low temperature solid oxide fuel cell fed by direct bio-ethanol is receiving considerable attention as a clean and highly efficient for the production of both electricity and high grade waste heat. The comparison of fuel cell performance with…
The effect on morphological, spectroscopic, and thermal properties of oil palm empty fruit bunch fibers (OPEFB fibers) and oil palm frond fibers (OPF fibers) following treatment and modification with sodium hydroxide and succinic anhydride, respectively, were investigated. The evidence of treatment was observed by wei…
We carry out a theoretical investigation of the recently reported M(smif)(2) series1,2 and find a number of interesting phenomena. These include complex potential energy surfaces with near-degenerate stationary points, low-lying states, non-trivial electron configurations, as well as non-innocent ligand behavior. The…
The self-consistent field theory (SCFT) is applied to the microphase separation of concentrated solutions of weakly charged polyelectrolytes. The generalized Poisson–Boltzmann equation describing the electrostatic interactions at the mean-field level is numerically solved by a full multigrid algorithm, which enables o…