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Characterization of the tunable response of highly strained compliant optical metamaterials

Pryce, Imogen M. and Aydin, Koray and Kelaita, Yousif A. and Briggs, Ryan M. and Atwater, Harry A. (2011) Characterization of the tunable response of highly strained compliant optical metamaterials. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences, 369 (1950). pp. 3447-3455. ISSN 1364-503X. doi:10.1098/rsta.2011.0122.

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Metamaterial designs are typically limited to a narrow operating bandwidth that is predetermined by the fabricated dimensions. Various approaches have previously been used to introduce post-fabrication tunability and thus enable active metamaterials. In this work, we exploit the mechanical deformability of a highly compliant polymeric substrate to achieve dynamic, tunable resonant frequency shifts greater than a resonant linewidth. We investigate the effect of metamaterial shape on the plastic deformation limit of resonators. We find that, for designs in which the local strain is evenly distributed, the response is elastic under larger global tensile strains. The plastic and elastic limits of resonator deformation are explored and the results indicate that, once deformed, the resonators operate within a new envelope of elastic response. We also demonstrate the use of coupled resonator systems to add an additional degree of freedom to the frequency tunability and show that compliant substrates can be used as a tool to test coupling strength. Finally, we illustrate how compliant metamaterials could be used as infrared sensors, and show enhancement of an infrared vibration absorption feature by a factor of 225.

Item Type:Article
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Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2011 The Royal Society. One contribution of 9 to a Theo Murphy Meeting Issue ‘Metallic metamaterials and plasmonics’. Financial support from the Air Force Office of Scientific Research under grant no. FA9550-09-1-0673 is appreciated. I.M.P. acknowledges the support of a National Science Foundation Fellowship. We gratefully acknowledge critical support and infrastructure provided for this work by the Kavli Nanoscience Institute at Caltech. Portions of this work were performed in facilities sponsored by the Center for Science and Engineering of Materials, an NSF MRSEC. We gratefully acknowledge Professor George Rossman for access to his IR facilities and invaluable discussions. We thank Dr Shannon Boettcher and Elizabeth Santori for help with surface functionalization and David Valley and Vivian Ferry for useful discussions.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA 9550-09-1-0673
Subject Keywords:metamaterial; mechanical deformation; infrared sensors
Issue or Number:1950
Record Number:CaltechAUTHORS:20110816-134319812
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Official Citation:Imogen M. Pryce, Koray Aydin, Yousif A. Kelaita, Ryan M. Briggs, and Harry A. Atwater Characterization of the tunable response of highly strained compliant optical metamaterials Phil. Trans. R. Soc. A September 13, 2011 369 (1950) 3447-3455; doi:10.1098/rsta.2011.0122
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24890
Deposited By: Ruth Sustaita
Deposited On:16 Aug 2011 21:10
Last Modified:09 Nov 2021 16:27

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