Wavelength-scanning surface plasmon resonance imaging

Soichi Otsuki, Kaoru Tamada, S. Wakida

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

A new surface plasmon resonance (SPR) imaging technique was proposed. After measurements were conducted at varying wavelengths, the wavelength affording the minimum brightness (SPR wavelength) was determined at each pixel of the image. A two-dimensional map of the SPR wavelength could be converted to a thickness profile by use of a nonlinear calibration curve, which was obtained by Fresnel calculation. An array of protein thin layers on a gold film was evaluated in air to present the layers' surface structure in nanometer scale.

Original languageEnglish
Pages (from-to)3468-3472
Number of pages5
JournalApplied optics
Volume44
Issue number17
DOIs
Publication statusPublished - 2005 Jun 10
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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