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we are reporting the fabrication of reduced graphene oxide (RGO) - silver (Ag) nanocomposite films for temperature sensor application on the basis of negative temperature coefficient (NTC) resistive element. The nanocomposite was successfully prepared by the solution mixing of RGO nanosheets and Ag metal nanoparticles in N-Methyl-2-Pyrrolidone (NMP) using ultrasonication process. It was found that,...
This paper describes the two routes with grafting schemes (covalent or not covalent) for producing non-conductive ferromagnetic films of core double-shell cobalt–graphene–polystyrene nanocomposites. Films present high moment (103 emu/g) and high resistivity ($10^{10}~\mu \Omega \cdot $ cm) leading to a constant permeability of 1.9 with a magnetic loss tangent of $10^{\mathrm {-3}}$ at 10 GHz.
We have recently reported on the effect of silver nanoparticles plasma polymerized stack deposited on a polyethylene film preventing charge injection of both polarities under DC field. We investigate here the effects of the size and density of the silver nanograins on the barrier effect for charge injection. Size and density of the nanoparticles, and the surface coverage are controlled through the...
The effect of calcination temperature on the photoelectrochemical properties of the electrodeposited TiO2 and TiO2/SiO2 films as well as the corresponding dye-sensitized solar cells (DSSCs) was investigated in combination with photoresponse and AC impedance measurement. The thermal treatment of as-prepared electrodeposited TiO2-based films was found to decrease the charge transfer resistances at the...
A novel nanocomposite material was designed and synthesized for potential use in energy storage devices. It comprises of gold nanoparticles of diameter 5nm and SU-8 polymer. Scanning Electron Microscopy, Transmission Electron Microscopy and Energy Dispersive X-ray Spectroscopy techniques were used for the characterization of the nanocomposite material. The presented work represents a major first step...
Hybrid nanocomposites based on crystalline nanoparticles dispersed in polymer matrix has been widely studied in the past few years because of the ability of these materials to combine both properties of organic polymer and inorganic nanoparticles. The aim of this work is to tune mechanical properties of piezoelectric polymer by adding nanoparticles to the matrix. In this paper alumina nanoparticles...
Polymer nanocomposites have attracted wide interest as a method of enhancing polymer properties and extending their applications. In polymer nanocomposites, chemically dissimilar components are combined at the nanometer scale, and stronger interactions between the polymer and nanoparticles produce markedly improved materials with better electrical, mechanical, thermal, and rheological performances...
Pure ZnO, pure MgO and 5 wt%MgO/ZnO nanocomposites were produced by flame spray pyrolysis (FSP) in a single step using zinc naphthenate and magnesium acetate tetrahydrate as Zn and Mg precursors. The particle properties were analyzed by XRD, BET and TEM analyses. The sensing films were prepared by mixing the nanoparticles into an organic paste composed of ethyl cellulose and terpineol as a vehicle...
Surface plasmon resonance (SPR) of metal-dielectric composite films formed by noble metal nanoparticles embedded in a dielectric is very sensitive to the changes in the refractive index of the dielectric induced by physical absorption or chemical reactions and is therefore exploited for gas sensing applications. In this study, Au-WO3-x nanocomposite thin films were fabricated by pulsed laser deposition...
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