High-sensitivity surface plasmon resonance sensors utilizing high-refractive-index silver nanoparticle sheets

Daisuke Tanaka, Shuhei Shinohara, Eiji Usukura, Pangpang Wang, Koichi Okamoto, Kaoru Tamada

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We propose an idea for improving the angular sensitivity of Kretschmann-type surface plasmon resonance (SPR) sensors through the use of highrefractive- index silver nanoparticle (AgNP) sheets on metal substrates. According to Fresnel simulations, the angular sensitivity will be improved threefold by using the multilayered AgNP coating on gold or silver substrates. We confirmed the validity of this method by a model measurement with a SiO 2 sputtered film, which has a refractive index similar to that of organic or biological molecules. This simple technique will contribute to realizing a high-sensitivity SPR sensor, especially for the detection of small molecules.

Original languageEnglish
Article number01AF01
JournalJapanese journal of applied physics
Volume53
Issue number1 PART 2
DOIs
Publication statusPublished - Feb 10 2014

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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