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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 3 — Feb. 4, 2008
  • pp: 1786–1795

Thin-film sensing with planar terahertz metamaterials: sensitivity and limitations

John F. O’Hara, Ranjan Singh, Igal Brener, Evgenya Smirnova, Jiaguang Han, Antoinette J. Taylor, and Weili Zhang  »View Author Affiliations

Optics Express, Vol. 16, Issue 3, pp. 1786-1795 (2008)

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The limiting effects of varying the thickness of a dielectric overlayer on planar double split-ring resonator (SRR) arrays are studied by terahertz time-domain spectroscopy. Uniform dielectric overlayers from 100 nm to 16 µm thick are deposited onto fixed SRR arrays in order to shift the resonance frequency of the electric response. We discuss the bounds of resonance shifting and emphasize the resulting limitations for SRR-based sensing. These results are presented in the context of typical biosensing situations and are compared to previous work and other existing sensing platforms.

© 2008 Optical Society of America

OCIS Codes
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(160.3918) Materials : Metamaterials
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: November 19, 2007
Revised Manuscript: January 14, 2008
Manuscript Accepted: January 14, 2008
Published: January 25, 2008

Virtual Issues
Vol. 3, Iss. 3 Virtual Journal for Biomedical Optics

John F. O'Hara, Ranjan Singh, Igal Brener, Evgenya Smirnova, Jiaguang Han, Antoinette J. Taylor, and Weili Zhang, "Thin-film sensing with planar terahertz metamaterials: sensitivity and limitations," Opt. Express 16, 1786-1795 (2008)

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