Materials Literature
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A systematic study of the interaction between π-extended porphyrins and single-walled carbon nanotubes (SWNTs) is reported here. Zinc porphyrins with 1-pyrenyl groups in the 5,15-meso positions, 1, as well as compounds where one or both of the pyrene groups have been fused at the meso and β positions of the porphyrin…
Patterned films of decorated nitrogenated carbon (C-N) nanotubes were catalytically synthesised by hot filament chemical vapour deposition (HF-CVD) in a nitrogen-methane-ammonia environment. The systematic study of a transition between different kinds of C-N nanostructures as a function of the local substrate temperat…
We treat the ground state, elementary excitations, and neutron scattering cross section for a system of trimers consisting of three tightly bound spins 1/2 on a distorted Kagomé lattice, subject to isotropic nearest neighbor (usually antiferromagnetic) Heisenberg interactions. The interactions between trimers are assu…
Graphene has extremely low mass density and high mechanical strength, key qualities for efficient wide-frequency-response electrostatic audio speaker design. Low mass ensures good high frequency response, while high strength allows for relatively large free-standing diaphragms necessary for effective low frequency res…
Os biopolímeros têm atraído grande interesse na área de embalagens em virtude de sua biodegradabilidade, grande disponibilidade na natureza, baixo custo e facilidade de processamento. Estas características permitem a sua aplicação no desenvolvimento de novos filmes biodegradáveis e comestíveis. Este trabalho foi divid…
This paper studied the effects of different catalytic activation processes towards intermetallic diffusion and mechanical properties on nickel plated heat spreader after high temperature storage (HTS). Heat spreader performs as medium to dissipate heat from silicon die towards heat-sink and is normally made by copper…
This study investigates the use of methyl esters of Algae oil and its blends as fuel for a CI engine. Algae oil is not ideally suited as an engine fuel as such because of its high viscosity and low volatility. A process of transesterification has to be done to improve the properties of algae oil to make it comparable…
Silicene is a one-atom-thick 2D crystal of silicon with a hexagonal lattice structure that is related to that of graphene but with atomic bonds that are buckled rather than flat. This buckling confers advantages on silicene over graphene, because it should, in principle, generate both a band gap and polarized spin-sta…
1024x768 A facial skin condition evaluation system is described in this paper to make the users know their facial skin condition. Different kinds of texture features are calculated from the facial skin image. The contrast, deviation information, entropy and energy are calculated from the gray and blue parts of the ima…
In this paper, we present the investigation results on doping to a BK7 glass sample ( OHARA, S-BSL7 ) by use of a CO2 laser. CO2 laser system generates CW ( continuous wave ) laser beam with a wavelength of 10.6 μm. Laser beam irradiated on a sample substrate ( 30 mm × 5 mm × 0.67 mm thick ). A surface of the glass wa…
A technique of mounting a microlens array (MLA) on a solar cell as an encapsulation layer is presented. The uniform cylinder-shaped MLA was fabricated through simple and cost-effective micromachining processes. The efficiency of the triple-junction InGaP/GaAs/Ge solar cell was considerably enhanced by replacing a bare…
The standard molar enthalpy of combustion (Δc H (o) m) and formation (Δf H (o) m) of quaternary ammonium tetrachlorozincate [n-CnH2n+1N(CH3)3]2ZnCl4 have been determined for the hydrocarbon chain length from even number 8 to 18 of carbon atoms (n) by an oxygen-bomb combustion calorimeter. The results indicated that th…
We found that the tip size of a tapered hollow micro-tube can affect the properties of an emitted Bessel light beam. In addition, the incident light polarization state was also found to influence the characteristics of the emitted light beam. From a lithography viewpoint, we looked at the correlation between an emitte…
The IR- and Raman-active phonon frequencies, as well as the elastic constants of orthorhombic GeSe, were calculatedas a function of hydrostatic pressure using the method of density functional in the ABINIT software package. Comparison with the published results of theoretical calculations and experimental data of the…
The 1, 2-dicyano-1, 2-bis (2-ethoxy-2-oxo-1-ethyl) thio ethylene has been prepared from sodium cis 1,2-dicyano 1,2-ethylenedithiolate (NAMNT) and ethyl chloroacetate by treatment with Sodium iodide in dry acetone. 2,3,7,8,12,13,17,18-Octakis[2-propyloxy-2-oxo-1-ethyl)thio]-21H,23H-porphyrazine was obtained from 1,2-di…
We report fully momentum dependent, self-consistent calculations of the gap symmetry, Fermi surface (FS) anisotropy and Tc of superconducting (SC) LiFeAs using the experimental band structure and a realistic small-q electron phonon interaction within the framework of Migdal-Eliashberg theory. In the stoichiometric reg…
The purpose of this work is simulation of magnetised plasmas in the ITER project framework. In this context, kinetic Vlasov-Poisson like models are used to simulate core turbulence in the tokamak in a toroidal geometry. This leads to heavy simulations because a 6D dimensional problem has to be solved, even if reduced…
Ethanolic and Aqueous extract of ArisaemaLeschenaultii was evaluated for its Antiulcer activity against naproxen induced ulcer.Different extracts of blume of A. leschenaultii gave dose dependent increase in anti-ulcer activity against naproxen induced ulcer.Ethanolic extract of blume of A. leschenaultii showed better…
We developed a process for the fabrication of thin vertical mirrors as integrated structures of MEMS electrostatic actuators. The mirrors can be implemented as a vertical extension of the actuator sidewall, or can be positioned at any movable part of the actuator. The process involves the fabrication of a mesa structu…
Though all sixteen combinations of NAA + BAP, and NAA + KN induced callus from leaf explants of Coleus forskohlii with a variable response, 0.5 mg/l NAA + 1.5 mg/l BAP was the most efficient (100%) followed by 1.0 mg/l NAA + 2.5 mg/l KN (86%). Investigations were made for anti-inflammatory and analgesic activity of hy…