Effect of silver nanoisland-embedded grating for surface plasmon based total internal reflection fluorescence imaging

Kyujung Kim, Dong Jun Kim, Donghyun Kim

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

We present the enhancement of total internal reflection fluorescence microscopy by the excitation of localized surface plasmons using nanoisland embedded subwavelength grating. The presence of nanoislands may provide additional field enhancement even at moderate grating period. For fabrication of nanoisland embedded grating patterns, a silver film was first evaporated on a glass substrate. Next, silver grating was patterned by e-beam lithography. Subsequently, nanoisland shapes were chemically formed. Field enhancement was measured by fluorescent excitation of microbeads on periodic silver nanoislands. The performance is compared to the microbead excitation on a silver nanograting without nanoislands and nanoislands formed on a thin film without grating patterns as controls. The result confirms additional field enhancement by nanoisland embedded periodic patterns.

Original languageEnglish
Article number722417
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume7224
DOIs
Publication statusPublished - 2009 May 25
EventQuantum Dots, Particles, and Nanoclusters VI - San Jose, CA, United States
Duration: 2009 Jan 252009 Jan 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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