Materials Literature
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We reported the high strength of magnetoelectric (ME) coupling of trilayered composites prepared by electro-deposition. The ME coupling of Ni–lead zirconate titanate–Ni trilayered structure was measured in the range of 1–120 kHz. The trilayered composites exhibit high ME voltage coefficient because of good interfacial…
We have designed and synthesized a new functional (amino reactive) highly efficient fluorescent molecular switch (FMS) with a photochromic diarylethene and a rhodamine fluorescent dye. The reactive group in this FMS -N-hydroxysuccinimide ester- allows selective labeling of amino containing molecules or other materials…
A series of semialicyclic polyimides (PIs) have been successfully prepared by the polycondensation of two alicyclic dianhydrides, 1,2,3,4-cyclobutanetetracarboxylic dianhydride (CBDA) and 1,2,4,5-cyclohexanetetracarboxylic dianhydride (CHDA) with two sulfur-containing aromatic diamines, 4,4′-thiobis[( p -phenylenesulf…
We report the synthesis and characterization of a new series of rod−coil block copolymers, regioregular poly(3-alkylthiophene)- b -polylactide (P3AT-PLA), where the alkyl chain in the polythiophene moiety is either 6 or 12 carbons in length. After utilizing a controlled polymerization technique to synthesize end-funct…
Alanates and boranates are studied intensively because of their potential use as hydrogen storage materials. In this paper we present a first-principles study of the electronic structure and the energetics of beryllium boranate, Be(BH4)2. From total energy calculations we show that - in contrast to the other boranates…
By combining ab initio all-electron localized orbital and pseudopotential plane-wave approaches we report on calculations of the electron affinity (EA) and the ionization potential (IP) of (5, 5) and (7, 0) single-wall carbon nanotubes. The role played by finite-size effects and nanotube termination has been analysed…
The observed correlation of oxygen vacancies and room temperature ferromagnetic ordering in Co doped ZnO 1−δ nanoparticles reported earlier (Naeem et al 2006 Nanotechnology 17 2675–80) has been further explored by transport and optical measurements. In these particles room temperature ferromagnetic ordering had been o…
With the eigenfunctional theory, we study a general interacting electron system, and give a rigorous expression of its ground state energy which is composed of two parts, one part is contributed by the non-interacting electrons, and another one is represented by the correlation functions that are controlled by the ele…
Based on the two-step-switching model, the process of electromechanical poling of a ferroelectric ceramics is simulated. A difference of the remnant polarizations between two poling protocols (mechanical stress is applied before and after the application of poling field) is found from our simulations, which is also ob…
We present Monte Carlo simulations of the first stages of the coherent precipitation of copper in $\ensuremath{\alpha}\text{\ensuremath{-}}\mathrm{Fe}$. Our method is based on a vacancy mediated diffusion model, which takes into account the dependence of vacancy concentrations and migration barriers on the local atomi…
We have investigated the transport properties of ${\mathrm{LaVO}}_{3}/{\mathrm{SrTiO}}_{3}$ Mott-insulator--band-insulator heterointerfaces for various configurations. The (001)-oriented $n$-type ${\mathrm{VO}}_{2}/\mathrm{LaO}/{\mathrm{TiO}}_{2}$ polar discontinuity is conducting, exhibiting a ${\mathrm{LaVO}}_{3}$ t…
Understanding the complementary roles of surface energy and roughness on natural nonwetting surfaces has led to the development of a number of biomimetic superhydrophobic surfaces, which exhibit apparent contact angles with water greater than 150 degrees and low contact angle hysteresis. However, superoleophobic surfa…
Carbon nanotube field-effect transistors (CNTFETs) have been considered as a replacement for, or complement to, future semiconductor devices due to high mobility, low defect structure, and intrinsic nanometer scale of carbon nanotubes (CNTs).The great superiority in performance for CNTFETs vis-a-vis state-of-the-art s…
An investigation into the kinetics of two inorganic coagulant namely: aluminum sulphate octadecahydrate (Al2(SO4)3.18H2O) an ammonium aluminum sulphate dodecahydrate (NH4Al(SO4)2.12H2O) was studied to determine the effect of certain kinetic parameters on coagulation performance of the above mentioned coagulants. Resul…
The adsorption behaviour of Fe on the tenfold surface of the decagonal quasicrystal Al 72.6 Ni 10.5 Co 16.9 has been studied using scanning tunnelling microscopy, low energy electron diffraction (LEED), Auger electron spectroscopy (AES) and x-ray magnetic circular dichroism (XMCD). The results show the growth of a dis…
Oxygen engineering is an important tool for on-demand tailoring of manganese related perovskites into optimized performances.Anionic vacancies can be induced in both doped and undoped manganites by means of topotactic reduction processes under oxygen controlled atmosphere.This has given rise to the stabilization of ne…
The pseudo-Fourier modal analysis of two-dimensional arbitrarily shaped grating structures is described. It is shown that the pseudo-Fourier modal analysis has an advantage of improved structure modeling over the conventional rigorous coupled-wave analysis. In the conventional rigorous coupled-wave analysis, grating s…
The mean-squared displacement, velocity autocorrelation function, and the non-Gaussian parameter, obtained by dynamic light scattering on suspensions of particles with hard-sphere interactions, are compared with the results of the idealized version of mode-coupling theory. Both leading order asymptotic and full numeri…
Abstract Structure‐thermal property interrelationships are characterized and reported for organic/inorganic addition cure polyimide composite matrices based on 3,3′,4,4′‐benzophenone tetracarboxylic dianhydride, the reactive terminal group 4‐phenylethynyl phthalic anhydride, and stoichiometric controlled diamine ratio…
Abstract Various lignin model compounds were oxidized with polyoxometalate (POM), K 5 [SiVW 11 O 40 ]·12 H 2 O, in sodium acetate buffer ( I =0.2 M, pH 5.0) and the reaction kinetics were investigated. The reactions were found to have second order reaction rates, first order with regards to both lignin model compound…