Compliant metamaterials for resonantly enhanced infrared absorption spectroscopy and refractive index sensing

Imogen M. Pryce, Yousif A. Kelaita, Koray Aydin, Harry A. Atwater*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

147 Scopus citations

Abstract

Metamaterials can be designed to operate at frequencies from the visible to the mid-IR, making these structures useful for both refractive index sensing and surface-enhanced infrared absorption spectroscopy. Here we investigate how the mechanical deformation of compliant metamaterials can be used to create new types of tunable sensing surfaces. For split ring resonator based metamaterials on polydimethylsiloxane we demonstrate refractive index sensing with figures of merit of up to 10.1. Given the tunability of the resonance of these structures through the infrared after fabrication, they are well suited for detection of the absorption signal of many typical vibrational modes. The results highlight the promise of postfabrication tunable sensors and the potential for integration.

Original languageEnglish (US)
Pages (from-to)8167-8174
Number of pages8
JournalACS nano
Volume5
Issue number10
DOIs
StatePublished - Oct 25 2011

Keywords

  • active metamaterials
  • plasmonics
  • polymers
  • refractive index sensing
  • surface-enhanced spectroscopy

ASJC Scopus subject areas

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

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