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Nanomaterials have attracted great interest in recent years because of the unusual mechanical, electrical, electronic, optical, magnetic and surface properties. The high surface/volume ratio of these materials has significant implications with respect to energy storage. Both the high surface area and the opportunity for nanomaterial consolidation are key attributes of this new class of materials for...
Delamination is a major mode of failure in laminated composites. This paper addresses development of advanced delamination resistant composites using interlaminar SiO2 nanofibers. The SiO2 nanofibers were manufactured using Tetra Ethyl Orthosilicate (TEOS) sol gel. The sol gel viscosity of 100–200 cps Voltage of 18kV and distance between spinneret and grounded collector plate of 80 mm were found to...
ZnS:Mn embedded PMMA nanocompositewere successfully synthesized by wet chemical method. Hexagonal structure, spherical shape and nano dimensional state (∼20nm) of the particulate filled nanocomposites were confirmed by X-ray diffraction and Transmission electron microscopy. The Absorption Study shows that the blue shift in the absorption spectrum as the result of quantum confinement effect and reduced...
The nanoscience and nanotechnology have brought with new chance for new applications of some traditional pollution treatment technology. A port of new instance, in a rare earth doped cerium oxide powder was used as a catalyst to investigate the removal of color and TOC from simulated wastewater of C.I. Reactive Blue 198. Graphite electrode was used as anode and cathode and electrolysis were carried...
Ni0.5−xMgxCu0.05Zn0.45Fe2O4 (x=0.0, 0.4 and 0.5) ferrites were prepared through sol-gel method and investigated their electromagnetic properties suitable for Multi layer chip inductor (MLCI) applications. Initial permeability and AC electrical resistivity are found to increase with increase in Mg substitutions. It is also observed that initial permeability is constant up to 10MHz frequency range showing...
Nano supported Ru/TiO2 and Pt/TiO2 catalysts were prepared by impregnation method, dried in a furnace, calcined at 400°C for 5 hours and reduced at two different temperatures, 375°C (LTR) and 575°C (HTR) for 4 hours. The catalysts were characterized by BET surface area, TPR, HRTEM, XRD and XPS techniques. The activity and selectivity of the catalysts were evaluated in liquid phase selective hydrogenation...
Carbon nanotubes have various unique properties beneficial for use in various electronic devices such as quantum wires, optical switchers, nano-transistors etc. Theoretical and experimental attempts were made in past decade to predict material properties of CNTs. Atomistic models of EPON 862 polymers were built in order to assess the effect of structure at the nanometer scale on the resulting bulk...
Two different amphiphilic poly(propyleneimine) dendrimers (APPI-G2-(N+Cl−)x) were synthesized by reductive methylation of poly(propyleneimine) dendrimer with HCOOH/HCHO and thus yield methylated dendrimer having eight dimethyl amino end groups. This in turn was converted into amphiphilic form via quaternization with 1-bromooctane. By varying the mole ratio of alkyl bromide to dendrimer, averages of...
We prepared nanocomposites of silica-ionic liquid with varying composition of silica nanoparticles (mean diameter d =14 nm) in 1-Ethyl-3-methyl bis (trifluromethanesulfonyl) imide (Emim TFSI) ionic liquid. Dynamic rheological measurements have revealed soft glassy nature of these nanocomposites at room temperature. Quite surprisingly, the nanocomposite is found to behave as a strong gel rather than...
In2O3 thin films were deposited by the sol gel dip coating method using the Acrylamide route. Basic characterizations were done using XRD, XPS, AFM and EDAX and confirm the stoichiometric In2O3 with cubic structure. AFM confirms the increase in surface roughness in the film with indium doping.
Nickel is deposited from different electrolytes as sulphate, sulphamate, chloride for its various applications. Electrodeposition of nickel is used mostly for corrosion protection of steel and for both decorative and functional applications. Bright, Semi-bright coatings can be obtained from various compositions of electrolytes for its various requirements. Nickel is also used for electroforming purposes...
The semiconducting polymer and inorganic metal oxide composites composed of polypyrrole /titanium dioxide (PPy/TiO2) were synthesized by sol-gel techniques. The products were characterized by FT-IR, Scanning electron microscopy (SEM), thermo gravimetric differential thermal analysis (TG-DTA) and XRD (X-ray diffraction) techniques. The corrosion performance of polypyrrole-titanium oxide composite incorporated...
We present a systematic investigation to compare the adsorption and substitutional doping of Fe atoms in ZGNR. The present calculations revealed that adsorption and substitutional doping are two different phenomenon which differ in stability. We predict that Fe adsorption in ZGNR is energetically more favourable than substitutional doping. Edge is found to be energetically preferred site for adsorption...
Nanocrystalline Zinc oxide (ZnO) thin films were prepared by using physical vapor deposition under a vacuum of 5 × 10−5 Torr by using rf magnetron sputtering technique at different substrate temperatures ranging from 373K to 573K. X-ray diffraction analysis (XRD) indicates that the films are polycrystalline, with strong preferential orientation of grains along the c-axis irrespective of their substrate...
The impact of technology scaling on three run-time leakage reduction techniques (Input Vector Control, Body Bias Control and Power Supply Gating) is evaluated by determining limits and benefits, in terms of the potential leakage reduction, performance penalty, and area and power overhead in 180nm, 90nm, and 45nm technologies. Cadence simulation results and estimations with various functional units...
Thin films of yttria stabilized zirconia corresponding to 0–12 mol % yttria were synthesized by combustion chemical vapour deposition technique in the temperature range of 900 – 1100°C on quartz substrate. Zirconium (IV) 2-ethyhexanoate and yttrium (III) 2-ethylhexanoate were used as the precursors. Cubic (c) fluorite structures of YSZ were formed at 8 and 12 % yttria addition. Monoclinic (m) and...
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