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 language | English (US) |
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Pages (from-to) | 8167-8174 |
Number of pages | 8 |
Journal | ACS nano |
Volume | 5 |
Issue number | 10 |
DOIs | |
State | Published - Oct 25 2011 |
Keywords
- active metamaterials
- plasmonics
- polymers
- refractive index sensing
- surface-enhanced spectroscopy
ASJC Scopus subject areas
- General Materials Science
- General Engineering
- General Physics and Astronomy