Resonating periodic waveguides as ultra resolution sensors in biomedicine

D. Wawro, Purnomo Sidi Priambodo, R. Magnusson

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)

Abstract

Optical sensor technology based on subwavelength periodic waveguides is applied for tag-free, high-resolution biomedical and chemical detection. Measured resonance wavelength shifts of 6.4 nm for chemically attached Bovine Serum Albumin agree well with theory for a sensor tested in air. Reflection peak efficiencies of 90% are measured, and do not degrade upon biolayer attachment. Phase detection methods are investigated to enhance sensor sensitivity and resolution. Direct measurement of the resonant phase response is reported for the first time using ellipsometric measurement techniques.

Original languageEnglish
Article number11
Pages (from-to)52-57
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5515
DOIs
Publication statusPublished - 1 Dec 2004
EventNanoengineering: Fabrication, Properties, Optics, and Devices - Denver, CO, United States
Duration: 4 Aug 20046 Aug 2004

Keywords

  • Biosensor
  • Diffractive optics
  • Guided-mode resonance effect
  • Optical sensor

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