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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 2 — Jan. 17, 2011
  • pp: 458–466

Graphene-on-silver substrates for sensitive surface plasmon resonance imaging biosensors

Seung Ho Choi, Young L. Kim, and Kyung Min Byun  »View Author Affiliations

Optics Express, Vol. 19, Issue 2, pp. 458-466 (2011)

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Taking advantage of the high impermeability property of graphene and the sharp surface plasmon resonance (SPR) curve of silver, we numerically demonstrate that SPR imaging biosensors with a graphene-on-silver substrate can be used to achieve the dramatically high sensitivity as well as to prevent silver oxidation. Results of our numerical study show that a silver substrate with a few graphene layers can significantly increase the imaging sensitivity, compared to the conventional gold-film-based SPR imaging biosensor. In particular, single layered graphene deposited on the 60-nm thick silver film amplifies the SPR imaging signal more than three times. Therefore, the proposed SPR substrate could potentially open a new possibility of SPR imaging detection for sensitive and high-throughput assessment of multiple biomolecular interactions.

© 2011 OSA

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(310.0310) Thin films : Thin films
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:

Original Manuscript: November 24, 2010
Revised Manuscript: December 21, 2010
Manuscript Accepted: December 21, 2010
Published: January 3, 2011

Virtual Issues
Vol. 6, Iss. 2 Virtual Journal for Biomedical Optics

Seung Ho Choi, Young L. Kim, and Kyung Min Byun, "Graphene-on-silver substrates for sensitive surface plasmon resonance imaging biosensors," Opt. Express 19, 458-466 (2011)

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