Plasmonic optical properties of a single gold nano-rod

Polarization-contrast microscopy coupled with an atomic force microscope is utilized to attain far-field optical images of the multipolar surface plasmon resonance (SPR) modes of single gold nano-rod. Modulated standing modes resulted from the interference of longitudinal SPR modes and incident ligh...

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Published inOptics express Vol. 15; no. 12; pp. 7132 - 7139
Main Authors Huang, Hung Ji, Yu, Chin-Ping, Chang, Hung Chun, Chiu, Kuo Pin, Ming Chen, Hao, Liu, Ru Shi, Tsai, Din Ping
Format Journal Article
LanguageEnglish
Published United States 11.06.2007
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Summary:Polarization-contrast microscopy coupled with an atomic force microscope is utilized to attain far-field optical images of the multipolar surface plasmon resonance (SPR) modes of single gold nano-rod. Modulated standing modes resulted from the interference of longitudinal SPR modes and incident light are observed and studied. By counting the average distance of adjacent beats on this single gold nano-rod, the wave vector of longitudinal SPR modes can be obtained. We found a linear relationship between the wave vectors of the incident light and the induced SPR modes. Experimental results demonstrate a feasible way on acquiring plasmonic optical properties from an individual single gold nano-rod.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.15.007132