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Gold (Au) nanoparticles were fabricated on Chrome (Cr) thin film to glass substrate by slow-rate of e-beam evaporation method. Gold nanoparticles were identified by using scanning electron microscopy, atomic force microscopy and energy dispersive X-ray spectroscopy measurements. Au and Cr-peaks were confirmed by single crystal X-ray diffraction measurements. Energy dispersive X-ray and UV-spectroscopy...
We report a simple and facile method to produce plasmonic nanoarray in nanoporous alumina templates. Reflectance properties of the alumina template exhibits stop bands in the spectrum. Two dimensional arrays of Polymer-Gold nanocomposite support discrete Plasmon resonance modes at visible and infrared frequencies when illuminated with light at normal incidence.
Plasmons are simply density waves of electrons, shaped when light hits the surface of a metal under particular conditions. These waves are produced at optical frequencies, very small and rapid waves; as a result they can in theory encode plenty of information. Surface Plasmon resonance (SPR) has become a significant optical tool for identifying a selection of specific binding interactions such as...
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...
Ion beam mixing of silver-covered oxide films by 400 keV argon ions induces the formation of silver nanoparticles on the oxide surface. Using consecutive conformal dielectric deposition and ion beam mixing, multiple layers of the nanoparticles can be fabricated. By means of diffusive reflection and absorption spectroscopy, surface plasmon resonances of silver nanoparicles are investigated in SiO2,...
Gold nanoparticles (Au NPs) have been attracting more attention because they have many color varieties in the visible region based on plasmon resonance, which is due to the collective oscillation of the electrons at the surface of the nanoparticles. We prepared 6 nm Au NPs to modify the surface of the glass substrate. Surface plasmons resonance of Au NPs in toluene is between 500 nm and 600 nm. When...
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