The phase-response effect of size-dependent optical enhancement in a single nanoparticle

Chen Han Huang, Hsing Ying Lin, Cheng Hsiang Lin, Hsiang Chen Chui, Yun Chiang Lan, Shi Wei Chu

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

We demonstrate detailed simulations and experiments of near-field phase-response in a single silver nanoparticle. The plasmon-photon interaction is directly observed in the vicinity of silver nanoparticles through a near-field scanning optical microscope (NSOM). Our results manifest the correlation of phase-response and size-dependent optical enhancement. Detailed interference behaviors between optical excitation and plasmon mediated re-radiation are revealed on a single particle basis. This observation facilitates nano-applications in controlling the spatial distribution of surface plasmon (SP) modes by means of nanostructures.

Original languageEnglish
Pages (from-to)9580-9586
Number of pages7
JournalOptics Express
Volume16
Issue number13
DOIs
Publication statusPublished - 2008 Jun 23

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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