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Plasmonics

, Volume 9, Issue 3, pp 651–657 | Cite as

Tunable Properties of Surface Plasmon Resonances: The Influence of Core–Shell Thickness and Dielectric Environment

  • Nilesh Kumar Pathak
  • Alok Ji
  • R. P. Sharma
Article

Abstract

In the present study, we have investigated the extinction spectra of coated sphere (using dipole model) with different core–shell radius, in which the core is TiO2 and the shell is made up of silver or gold nanoparticles. Nanoparticles exhibit surface plasmon resonance peak; these plasmonic peaks are highly tunable in wavelength range of 300 to 1,100 nm; in fact, the blue and red shifting of resonance peak highly depends on the core–shell thickness. The broadness of resonance peaks are analysed in terms of full width at half maxima (FWHM), and the width of these resonance peaks is also the function of core–shell radius.

Keywords

Core–shell geometry Surface plasmon resonance Noble metal nanoparticle and extinction spectra 

Notes

Acknowledgements

This research is financially supported by MNRE India.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Centre for Energy StudiesIndian Institute of TechnologyDelhiIndia

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