Plasmon resonance absorption in sulfide-coated gold nanorods

Chatterjee, K. ; Basu, S. ; Chakravorty, D. (2006) Plasmon resonance absorption in sulfide-coated gold nanorods Journal of Materials Research, 21 (1). pp. 34-40. ISSN 0884-2914

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Gold nanorods 100 nm in diameter were grown within polycarbonate membranes as templates by the electrodeposition technique. A low-temperature sulfidation process was used to make gold sulfide nanoshells around the nanorods with a thickness of ~7 nm. Optical absorption measurements were carried out on sulfide-coated gold nanorods obtained by dissolving the polycarbonate membrane. Several peaks were observed. These were analyzed on the basis of longitudinal and transverse modes of gold nanorods, the core-shell structure of gold-gold sulfide, and the presence of nanoparticles of gold. Theoretical analysis was carried out using a modified Mie scattering formalism. Satisfactory agreement between experimental results and theoretical fits were obtained.

Item Type:Article
Source:Copyright of this article belongs to Cambridge University Press.
ID Code:65041
Deposited On:15 Oct 2011 12:19
Last Modified:15 Oct 2011 12:19

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