Materials Literature
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We have prepared and isolated a variety of cadmium selenide cluster molecules by the reaction of Cd(O 2 C–R) 2 (H 2 NR′) 2 (R = C 4 H 9, 4-X-Ph; X = H, −OMe, −SMe, −Me, −F, and −CF 3; R′ = dodecyl, phenethyl) with tri- n -octylphosphine selenide (TOPSe) and diphenylphosphine selenide (DPPSe). Reactions conducted with…
Biosynthesis of nanoparticles using microorganisms has attracted a lot of attention in recent years as this route has the potential to lead to synthesis of monodisperse nanoparticles. Here, we report the intracellular synthesis of stable lead sulfide nanoparticles by a marine yeast, Rhodosporidium diobovatum. The PbS…
Abstract This paper describes a layer‐by‐layer (LBL) electrostatic self‐assembly process for fabricating highly efficient antimicrobial nanocoatings on a natural cellulose substrate. The composite materials comprise a chemically modified cotton substrate and a layer of sub‐5 nm copper‐based nanoparticles. The LBL proc…
Whether gold is catalytically active on its own has been hotly debated since the discovery of gold-based catalysis in the 1980s. One of the central controversies is on the O(2) activation mechanism. This work, by investigating aerobic phenylethanol oxidation on gold nanoparticles in aqueous solution, demonstrates that…
Background elimination and improved sensitivity were achieved by time-resolved (TR) detection with a FRET biosensor for traces of biomolecules such as avidin at concentrations down to 4.8 nM. As shown in the picture, UV excitation of biotinylated NaYF4:Ce/Tb nanocrystals triggers energy transfer to fluorescein isothio…
The influence of the bond alternation on electronic energy band structure of armchair carbon nanotubes is studied by the tight-binding approximation. It is shown that the armchair carbon nanotubes at ground state with Kekule structure open small band gap at the Fermi level. Dependence of energy band gap of armchair ca…
Asphalt pavement, which is relatively easy to burn in comparison to cement concrete pavement, is not often used in road tunnel. By adding flame retardant (FR) additives, asphalt pavement would be made less flammable. In this paper, the effect of three different combinations of flame retardant additives on an asphalt b…
In the last few years, silicon has drawn increased attention due to the possible application as thermoelectric material. In this paper we are presenting the results of the investigation on several heavily phosphorus doped polycrystalline silicon thin films. The samples were prepared in LPCVD reactor and then subjected…
In this review, the effect of chemicals, flame radiation, grafting and their combination on the surface of low density polyethylene (LDPE)were studied.Like the most of the polymers, LDPE is inherently hydropolic; we explored the possible options for redenring the polymer surface hydrophilic without changes in bulk pro…
Until recently, engineering materials could be characterised successfully using relatively simple testing procedures. However, advanced materials technology has led to the development of materials with complex meso-, micro- and nano-structures that can no longer be characterised with simple testing procedures. Materia…
Advanced
"The anion composition dependence of the characteristic glow peak temperature of europium doped KCl0.50KBr0.25RbX0.25:Eu2+ (X=Cl, Br) mixed crystals are studied. Each material shows a thermoluminescence glow curve consisting of two main glow peaks with a temperature is between KCl:Eu2+ and KBr:Eu2+. The most intense i…
Co-combustion performance of blends of municipal solid waste with high ash content and low calorific value and corn stalk was investigated using a thermogravimetric analyzer coupled with a Fourier transform infrared spectroscopy. Ignition temperature, emissions of major gaseous pollutants, and the ash characterization…
The magnetic material is the paramount player in the design of magnetic components. The magnetics design engineer has three standard words when making the normal design trade-off study: cost, size, and performance. Silicon steel was one of the first alloys to be used in transformers and inductors. Silicon steel offers…
Abstract Using Wilson's GF matrix method as modified by Higgs for an infinite system, we report normal modes and their dispersion for polyoxymethylene using the Urey‐Bradley force field. Heat capacity has been evaluated as a function of temperature from dispersion curves via density‐of‐states. The results obtained agr…
A temperatura y presión ambiente el Ti, Zr y Hf cristalizan en la fase hexagonal compacta. Recientemente se ha reportado que estos elementos son élasticamente metaestables [14] en la estructura cúbica centrada en las caras (fcc). En este trabajo presentamos el esfuerzo triaxial ideal de los metales Ti, Zr y Hf con est…
A molten carbonate fuel cell (MCFC) system is modeled and a control strategy is proposed. A spatially distributed two-dimensional dynamic model of single cell direct internal reforming MCFC was developed as a numerical process by reducing the PDE model to a set of ODE's using the cubic spline collocation method and th…
Abstract Amorphous hydrogenated silicon films different in thickness (600 – 2400 nm) were deposited by plasma enhanced chemical vapour deposition on Corning glass substrates at 250 °C using silan 10% / argon 90% gas mixture. The samples were consequently isothermally heated in a high temperature vacuum chamber at 0.1…
Several epoxy matrix composite panels were fabricated by resin transfer molding (RTM) E862/W resin onto a triaxially braided carbon fiber pre-form. Nanoparticles including carbon nanofiber, synthetic clay, and functionalized graphite were dispersed in the E862 matrix, and the extent of particle filtration during proce…
"Structures, binding energies, and magnetic moments of Fe n (n = 2-13) clusters have been obtained by pseudopotential density functional theory. A Troullier-Martin scheme was used to generate the iron's pseudopotential and we have successfully reproduced results (lattice constant and magnetic moment) for the bulk BCC…