Near-field optical imaging of polarization-dependent plasmonic resonance in metal nanoparticle pairs

Hsing Ying Lin, Chen Han Huang, Chih-Han Chang, Yung-Chiang Lan, Hsiang-Chen Chui

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The near-field distribution of plasmonic coupling effect in gold nanoparticle pairs was directly investigated by a nearfield scanning optical microscope (NSOM) in the fiber-collection mode. NOSM images show that the localized plasmonic coupling and the electromagnetic field distribution of nanoparticle pairs are systematically influenced by the interparticle space and axial direction of incident polarization. This observation can facilitate the understanding of localized hot spots in surface-enhanced Raman spectroscopy in the near field and can be used as a guideline for fabricating specific nanostructures in controlling the spatial distribution of surface plasmon (SP) modes for ultrasensitive sensors or photonic devices.

Original languageEnglish
Title of host publicationQuantum Sensing and Nanophotonic Devices VII
DOIs
Publication statusPublished - 2010 May 13
EventQuantum Sensing and Nanophotonic Devices VII - San Francisco, CA, United States
Duration: 2010 Jan 242010 Jan 28

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7608
ISSN (Print)0277-786X

Other

OtherQuantum Sensing and Nanophotonic Devices VII
CountryUnited States
CitySan Francisco, CA
Period10-01-2410-01-28

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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