• Uma Pachauri
• P. S. Rawat
• Deepika P. Joshi

-In the present work the optical properties of gold coated silica nanoparticles (SiO2@Au) were discussed. Mono-dispersed silica nanoparticles were synthesized by Stober process and gold nanoparticles were synthesized by citrate reduction method. The evolution of gold-coverage over the surface of functionalized silica particles were demonstrated via tunneling electron microscopy (TEM), FTIR and UV-Visible spectroscopy for morphological and optical study. The study suggested that surface plasmon resonance absorption spectra from 350 nm to 600 nm of the core–shell nanoparticles can be effectively controlled and tuned by the surface gold coverage or by the size of SiO2@Au core-shell nanoparticles.

-Shell nanoparticles, Silica nanoparticles, Gold nanoparticles, UV-Vis spectroscopy.

"STRUCTURAL AND TAILORED OPTICAL PROPERTIES OF GOLD COATED SILICA (SIO2@AU) NANOPARTICLES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.1191-1193, August-2018, Available :http://www.jetir.org/papers/JETIRA006206.pdf

"STRUCTURAL AND TAILORED OPTICAL PROPERTIES OF GOLD COATED SILICA (SIO2@AU) NANOPARTICLES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp1191-1193, August-2018, Available at : http://www.jetir.org/papers/JETIRA006206.pdf