Nano Archive

Calculation of curvature dependent surface plasmon resonance in gold nanospheroid and nanoshell

Zhu, Jian (2009) Calculation of curvature dependent surface plasmon resonance in gold nanospheroid and nanoshell. Journal of Nanoparticle Research, 11 (4). pp. 785-792.

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Official URL: http://www.springerlink.com/content/q34q888601x6jh...

Abstract

In this paper, theoretical calculations based on dipole-limit are performed to investigate the effects of curvature on the surface plasmon resonance (SPR) properties of nanometer size gold spheroid and shell. By comparing the aspect ratio with the shell thickness, we demonstrated that the curvature radius is a common better factor that can be used to predict the SPR wavelength and shift fashion. For nanospheroid, increasing the ratio of curvature radius corresponding to the climaxes leads to an increase in the ratio of SPR wavelength, whereas increasing the ratio of curvature radius of outer and inner surface in nanoshell leads to an decrease in the ratio of SPR wavelength. As a morphologic factor, curvature radius plays an important role in affecting the distribution of electron density, and consequently controlling the SPR frequency.

Item Type:Article
ID Code:4535
Deposited By:Prof. Alexey Ivanov
Deposited On:08 May 2009 06:11
Last Modified:08 May 2009 09:53

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