Evanescent signal detection and enhanced resolution with random silver nanoparticles

Wei Chih Liu, Din Ping Tsai

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Inspired by the subwavelength resolution capability of the super-resolution near-field structure, a simplified optical structure was proposed to investigate the complicated near-field optical interactions between random silver nanoparticles and evanescent waves from a zeroth-order grating. The simplified structure consisted of a glass thin film embedded with random silver nanoparticles on a zeroth-order glass grating. The near-field and far-field optical properties of this structure were investigated by the finite-difference time-domain (FDTD) numerical simulations and the optical resolution beyond diffraction limit was demonstrated.

Original languageEnglish
Pages (from-to)I94-I97
JournalScanning
Volume26
Issue number5 SUPPL.
Publication statusPublished - 2004

Keywords

  • Finite-difference time-domain method
  • Localized surface plasmon
  • Metallic nanoparticles
  • Near-field optical probe

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Instrumentation

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