META Conference, META'10

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Near-field optical imaging of polarization-/distance-dependent plasmon coupling in metal nanoparticle pairs
Hsing-Ying Lin, Chen-Han Huang, Chih-Han Chang, Yun-Chiang Lan, Hsiang-Chen Chui

Last modified: 2009-11-07


The plasmonic coupling effect in gold nanoparticle pairs was investigated by a near-field scanning optical microscope. Results manifest the correlation of nanoparticle pairs’ axis and the polarization-dependent optical enhancement, which facilitates the understanding of localized hot spots in surface-enhanced Raman spectroscopy and nano-applications in controlling spatial plasmonic modes by nanostructures.