Journal
NANO LETTERS
Volume 10, Issue 10, Pages 4222-4227Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl102684x
Keywords
Metamaterials; polymers; plasmonic sensing
Categories
Funding
- Air Force Office of Scientific Research [FA9550-09-1-0673]
- National Science Foundation
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Metamaterial designs are typically limited to operation over a narrow bandwidth dictated by the resonant line width Here we report a compliant metamaterial with tunability of Delta lambda similar to 400 nm, greater than the resonant line width at optical frequencies, using high-strain mechanical deformation of an elastomeric substrate to controllably modify the distance between the resonant elements Using this compliant platform, we demonstrate dynamic surface-enhanced infrared absorption by tuning the metamaterial resonant frequency through a CH stretch vibrational mode, enhancing the reflection signal by a factor of 180 Manipulation of resonator components is also used to tune and modulate the Fano resonance of a coupled system
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