A theoretical and experimental investigation into the enhancement of near electro-magnetic field via plasmonic effects

C. Y. Lin*, F. C. Chien, C. H. Huang, S. J. Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In this study, we use the finite-difference time-domain (FDTD) method and an attenuated-total-reflection (ATR) fluorescent optical microscope to investigate into the enhancement of near electro-magnetic (EM) field via plasmonic effects. In order to enhance the near EM field on the sensing surface, a metallic particle layer is added under the Kretschmann configuration of the conventional surface plasmon resonance sensor based on the ATR method. The affiliation by the simulation and experimental results can help us to understand the mechanisms of surface plasmons and particle plasmons on the sensor surface, and the effects of the EM field enhancement are classified as the surface plasmon effect, particle plasmon effect, interparticle coupling effect, and gap mode effect. By analyzing and comparing the results based on the FDTD method and the ATR fluorescent microscope, we can understand more about the plasmonic effects in order to deign a novel ultra-high resolution plasmonic biosensor.

Original languageEnglish
Title of host publicationPlasmonics in Biology and Medicine III
DOIs
StatePublished - 26 Jun 2006
EventPlasmonics in Biology and Medicine III - San Jose, CA, United States
Duration: 23 Jan 200624 Jan 2006

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6099
ISSN (Print)1605-7422

Conference

ConferencePlasmonics in Biology and Medicine III
CountryUnited States
CitySan Jose, CA
Period23/01/0624/01/06

Keywords

  • Finite-difference time-domain
  • Near field scanning optical microscope
  • Particle plasmons
  • Plasmonic biosensing
  • Surface plasmons

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