Showing papers in "Current Applied Physics in 2010"

TL;DR: Graphene-based gas sensors showed fast response, good reversibility, selectivity and high sensitivity as discussed by the authors, which can open the door for the development of nano-sized gas sensors that are extremely sensitive.

TL;DR: In this article, LiBr was used as a filler to improve the electrical conductivity of PVA/PVP blend, which indicates that there is a charge transfer complexes arise between the polymer blend and Li-ions.

TL;DR: In this paper, hollow spheres of vanadium pentoxide made up of self assembled nanorods have been prepared successfully by solvothermal method by using XRD analysis, the diameter of the hollow spheres were around 2-3μm, while the nanorod forming the micro spheres were with diameters in the range of 100-200nm and are of few hundreds of nanometers in length.

TL;DR: In this paper, the effects of Ga content in the CIGS absorber layer on the properties of the corresponding thin films and solar cells fabricated using a co-evaporation technique were examined.

TL;DR: In this article, an Fe-based perpendicular alloy with small damping constant was applied to an MTJ storage layer and small switching current of 9μA was obtained for a write current width of 5μms.

TL;DR: In this paper, the density functional theory was employed to understand the electronic structure (band structure and density of states) of barium molybdate (BaMoO4) powders.

TL;DR: In this article, the effect of laser incident energy on the structural, morphological and optical properties of CZTS thin films was studied by means of X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and optical absorption.

TL;DR: In this article, a single-phase BaFe 0.5 Nb 0.3 O 3 (BFN) ceramics were prepared by solid-state reaction method and were characterized by X-ray Diffraction (XRD) technique.

TL;DR: In this article, the average size of the prepared ZnO nanoparticles is found to be 50nm and the frequency-dependent dielectric dispersion of the sample is investigated in the temperature range from 293 to 383 K and in a frequency range from 100 Hz to 1 MHz by impedance spectroscopy.

TL;DR: In this paper, various replacements for conventional cadmium sulfide (CdS) buffer layer, such as ZnO, ZnS (O,OH), ZnSe, InS and Zn1−xMgxO based buffer layers have been studied by solar cell capacitance simulator (SCAPS) in terms of layer thickness, absorber layer band gap and operating temperature.

TL;DR: In this article, the low pressure chemical vapor deposition (LP-CVD) of Al doped ZnO thin film was investigated for transparent electrode of thin film solar cell.

TL;DR: In this paper, the authors synthesize magnetic Fe 3 O 4 -chitosan nanoparticles via photochemical method in an emulsifier-free aqueous system at room temperature for the first time.

TL;DR: In this paper, the geometry, electronic structure, polarizability and hyperpolarizability of organic dye sensitizer TA-St-CA, which contains a π-conjugated oligo-phenylenevinylene unit with an electron donor-acceptor moiety, was studied using density functional theory (DFT), and the electronic absorption spectrum was investigated via time-dependent DFT (TD-DFT) with several hybrid functionals.

TL;DR: In this article, the effect of resorcinol to catalyst ratio (R / C ratio) on volume shrinkage, BET surface area, and electrochemical property of carbon aerogels was investigated by cyclic voltammetry measurement.

TL;DR: The unidirectional crystal growth method has been employed for the bulk growth of semi-organic non-linear optical bisthiourea zinc chloride single crystal along a-axis with high solute-crystal conversion efficiency as discussed by the authors.

TL;DR: In this paper, the influence of annealing temperatures on the magnetic properties of nanocrystalline cobalt ferrites was investigated by means of X-ray diffractometer (XRD) and transmission electron microscopy (TEM).

TL;DR: In this paper, the effect of dispersion uniformity of multi-walled carbon nanotube (MWCNT) on the thermal conductivity of poly(dimethyl siloxane) (PDMS) composites was investigated by comparing experimentally obtained and calculated results based on simple models.

TL;DR: In this article, He's energy balance method is applied to nonlinear vibrations and oscillations and the results reveal that the energy balance methodology is very effective and convenient and does not require linearization or small perturbation.

TL;DR: Mesoporous Co 3 O 4 microspheres with unique crater-like morphology were obtained by utilizing the mesoporous silica material MCM-41 as a template.

TL;DR: In this article, an electrosynthesis process of hydrophilic polyaniline nanofiber electrode for electrochemical supercapacitor is described, which is shown to exhibit amorphous nature as confirmed from XRD study.

TL;DR: In this article, the use of tapioca starch for improvement of corrosion resistance of AA6061 alloy in seawater was examined and shown to significantly decrease the corrosion rates, corrosion current densities (icorr), and double layer capacitance (Cdl).

TL;DR: In this paper, measurements of optical constants (absorption coefficient, refractive index, extinction coefficient, real and imaginary part of the dielectric constant) have been made on Se 75 S 25− x Cd x (where x ǫ = 0, 2, 4, 6 and 8) thin films of thickness 3000 A as a function of photon energy in the wave length range 400-1000nm.

TL;DR: In this paper, two kinds of additives (Na 2 B 4 O 7 and EDTA) were doped in Na 2 SiO 3 -Na 3 PO 4 solution system to improve the corrosion resistance of ceramic coatings formed on Mg-5mass%Li substrate by micro-arc oxidation (MAO).

TL;DR: In this article, the potential future roles of fuel cells and hydrogen and highlights some work being conducted at the National Fuel Cell Research Center are discussed, highlighting the environmental and energy efficiency performance, diversity, continuous power capabilities, and potential future economic competitiveness of fuel cell and hydrogen technologies that could enable their future contributions to a more sustainable and renewable energy future.

TL;DR: In this paper, an inexpensive and one-step approach for synthesis of silver nanoparticles (Ag NPs) using arc discharge between titanium electrodes in AgNO 3 solution was presented.

TL;DR: In this paper, the authors have studied the life cycle analysis of the VLS-PV systems installed in desert area using sc-Si, mc-Si and a-Si/sc-Si.

TL;DR: In this article, a versatile and effective technique which using non-toxic chemicals to prepare stable aqueous dispersions of silver nanoparticles (NPs) via modified Tollens process was presented.

TL;DR: In this article, the best multilayer films have low sheet resistance of 19.8 Ω/Sq and average transmittance values of 61% in visible region, and the highest figure of merit (FTC) is 6.9 × 10−4 Ω−1.

TL;DR: The physical and electrochemical properties of the activated carbon pellet electrodes have been investigated in this paper, where a single step carbonization process of pre-carbonized rubber wood sawdust at a temperature of 800°C that followed with a CO2 activation process at temperature in the range of 700-1000°C.

TL;DR: In this article, the effects of these dopants on the structural, morphological, electrical, and optical properties of deposited ZnO thin films have been studied, and the results showed that all the films have columnar structure with hexagonal wurtzite phase.