Materials Literature
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A series of rationally designed pentanuclear clusters with D(3) symmetry have been synthesized and structurally characterized. The complexes were of formula [Ni(5)L(6)]X(n)Y(4-n) x mH(2)O [2-4, X = NO(3), Y = OH, n = 1, m = 3 (5); X = Br, n = 4, m= 4 (6); X = I, n = 4, m= 0 (7)], where the ligand [L, (Z)-1,2-di(1H-ben…
The effect of small amount of insoluble dopant on tetragonal to monoclinic (t-m) phase transformation of 3 mol%Y2O3 stabilized tetragonal zirconia polycrystal (3Y-TZP) is examined by ageing in hot water. The materials used are 3Y-TZP and 0.1 mol%SiO2-doped 3Y-TZP with grain size of 0.55 μm. The t-m phase transformatio…
Nanotechnology-based organic coatings have attracted increasing interest in recent years due to their high performances. In this article, the development of nanotechnology-based coatings is reviewed with regard to their potential applications, such as UV-blocking coatings, anti-scratch coatings, anti-abrasion coatings…
Electrochemical corrosion behaviour and chemical structure of the passive film of two newly developed austenitic stainless steels belonging to 200 series were studied in 1 M sulphuric acid (H2SO4). From polarization studies it was found that addition of Cu in the Cr–Mn–Ni stainless steel is beneficial in the passive r…
D textiles composites have a vast range of properties that can be superior to traditional 2D laminates. Warp interlock fabrics are generally defined into three main types as layer to layer, angle and orthogonal. Each of them can be used in different applications depending on their properties. In this work, the energy…
A bipyridine-based ligand 1 bearing two amphiphilic side chains allowed for the formation of metal complexes Pt(1)Cl2 (2), [Pt(1)2](BF4)2 (3), and [Pt(1)2][Pt(CN)4] (4), which are capable of templating the sol-gel synthesis of mesostrucutred silica to give 2-MS, 3-MS and 4-MS, respectively, whose silicate channels are…
It has long been believed that the phase transition behavior and clearing points (c.p.s) of phthalocyanine-based metallomesogens scarcely change regardless of the kind of central metal. In this work, we have synthesized a series of novel sandwich-type, europium complexes, bis[2,3,9,10,16,17,23,24-octakis(3,4-dialkoxyp…
Carboxylic groups have been incorporated in ethane-bridged PMO by one-pot synthesis using a triblock copolymer as template; their pK(a) measured by titration is higher than that of same groups incorporated in SBA-15.
Nanowires of carbon as well as nickel‐carbon (Ni‐C) were synthesized by spray‐pyrolysis. The carbon nanowires were synthesized using methanol as a precursor while the Ni‐C nanowires were obtained by using nickel chloride methanol solution as feed. It was found that low argon carrier gas flow rates (<100 cm 3 /min)…
Shock‐loading of a material in contact with a high explosive (HE) experiences a “Taylor wave” (triangular wave) loading profile in contrast to the square‐wave loading profile imparted via the impact of a flyer plate. Detailed metallographic and microtextural analysis of the damage evolution in spalled Cu samples as a…
(Note:Author for Correspondence: Neeraj Misra, B-981, sector-A, Mahanagar, Lucknow 226006, India) This work deals with a theoretical study of the molecular structure of colchicine. The equilibrium geometry, harmonic vibrational frequencies, infrared intensities and Raman scattering activities were calculated by the ab…
Generic approaches to nano-dots and nano-rings have been developed via sputtering an Au layer on one planar surface side of porous anodic aluminum oxide template and subsequent electrodeposition.
Poly (L-lactide) (PLLA) is attracting much attention as a biodegradable polymer. In this paper, effects of crystallinity on dielectric properties of PLLA are studied. At 80°C, which is above the glass transition temperature (about 60°C), the conductivity increases with a decrease in crystallinity. A thermally stimulat…
Pure Al2O3 powder was sintered by a pulsed electric current sintering (PECS) process with different pulse current waveforms from two types of power generators: an inverter (frequency 16 kHz) type and a pulsed direct current (DC) (frequency 300 Hz) type. The sample temperature during the PECS process as well as the sin…
The reaction process for the Ni-SDC cermet anode on the ScSZ electrolyte was examined by impedance spectrometry with wet hydrogen fuels and results were compared with previously obtained data for the Ni-ScSZ anode. Area specific conductivities (σSDC) for each rate controlling steps were obtained from the impedance spe…
Recently, core-shell type spherical nanoparticles (nanospheres) (core: cerium oxide, shell: organic polymer) that have a monodisperse size distribution and disperse easily in water and alcohol have been reported. Core-shell type cerium oxide/organic polymer nanospheres were characterized with respect to physicochemica…
The advanced state of development of molecular design and synthetic chemistry of porphyrins and related molecules makes these compounds good candidates for technological appli cations, in which well characterized and designed structures and properties are required. In particular, 2-dimensional molecular level control…
ZrO2/SiC composite ceramics were sintered and subjected to three-point bending. A surface crack of 100μm in diameter was made on each specimen. We studied crack-healing behavior. The main conclusions are as follows. (1) ZrO2/SiC composite ceramics could heal a crack. Then the best healing condition is 800°C × 30h in a…
Silk fibroin protein, isolated from cocoons of the domesticated mulberry silkworm, Bombyx mori, finds extensive application in biomaterial design. In this study, poly(ethylene glycol) (PEG) 4000 has been used for blending fibroin from both B. mori and Antheraea mylitta, the wild tropical non-mulberry silkworm. PEG-ble…
The foremost premise for the success of noninvasive volumetric myocardial Transmembrane (TMP) imaging from Body Surface Potential (BSP) recordings is a realistic yet efficient TMP-to-BSP mapping model that balances model accuracy with reconstruction feasibility. This papers presents a novel coupled meshfree-BEM platfo…