Materials Literature
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Cell damage caused by redox cycling in which the anode is electrochemically oxidized was investigated in order to detect the initial damage before cell failure. In order to prevent catastrophic destruction of the cell, partial electrochemical oxidation was used in the redox treatment and controlled at a very low degre…
This paper presents a realization of composite right/left handed transmission lines using coupled microstrip lines. This structure exploits the advantages of the microstrip lines, while increases the coupling by a ∞oating conductor at the ground plane. The performance of this composite right/left-handed line is demons…
Purpose: Ureilites are a rare type of meteorites containing tiny diamond grains. In our research we used two ureilites: NWA 3140 and DaG 868. The aim of this paper is to show the non-uniformity of carbon in ureilites, especially differences of ureilitic diamonds. Design/methodology/approach: One of the best methods to…
Purpose: During the last 20 years DLC (diamond-like carbon) layers became a very attractive material in many medical and engineering applications. While the layer’s stress and adhesion were always a concern, several adhesion improvement methods have been proposed. A majority of those methods consists of either the dep…
The continued miniaturization of silicon-based electronic circuits is fast approaching its physical limitations. It is unlikely that advances in miniaturization, following the so-called Moore's Law, can continue in the foreseeable future. Nanoelectronics has to go beyond silicon technology. New device paradigms based…
Photoluminescence characterization on CdNb 2 O 6 oxides by the solid state reaction were investigated in this work. The products were characterized by X-ray diffraction, scanning electron microscopy, photoluminescence spectroscopy and absorption spectra. The excitation wavelengths at 272 and 330 nm, were associated wi…
Metals have a variety of behaviors when deposited onto diblock copolymer films, in particular, poly(styrene-b-methylmethacrylate). Silver is known to form nanowires, whereas gold forms ellipsoidal nanoparticles of different sizes on each of the blocks, and chromium creates a uniform film on PS-b-PMMA. We show that wit…
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…