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Flexible metamaterials for wireless strain sensing

Appl. Phys. Lett. 95, 181105 (2009); doi:10.1063/1.3250175

Published 4 November 2009

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Rohat Melik,1 Emre Unal,1 Nihan Kosku Perkgoz,1 Christian Puttlitz,2 and Hilmi Volkan Demir1
1Department of Electrical Engineering, Department of Physics, Nanotechnology Research Center, and Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
2Department of Mechanical Engineering and School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado 80523, USA
We proposed and demonstrated flexible metamaterial-based wireless strain sensors that include arrays of split ring resonators (SRRs) to telemetrically measure strain. For these metamaterial sensors, we showed that a flexible substrate (e.g., Kapton tape) delivers greater sensitivity and a more linear response as compared to using silicon substrates. Specifically, these tape-based flexible SRR sensors exhibit a significantly improved sensitivity level of 0.292 MHz/kgf with a substantially reduced nonlinearity error of 3% for externally applied mechanical loads up to 250 kgf. These data represent a sixfold increase in sensitivity and a 16-fold reduction in error percentage. ©2009 American Institute of Physics
History: Received 9 July 2009; accepted 27 September 2009; published 4 November 2009
Permalink: http://link.aip.org/link/?APPLAB/95/181105/1
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EPAPS

KEYWORDS and PACS

Keywords
PACS
  • 07.07.Df
    Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
  • 07.10.Pz
    Instruments for strain, force, and torque
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (12)
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  11. D. J. Quinn, “Microstructure, residual stress, and mechanical properties of thin film materials for a microfabricated solid oxide fuel cell,” M.S. thesis, Massachusetts Institute of Technology, 2006.
  12. See EPAPS supplementary material at http://dx.doi.org/10.1063/1.3250175 for nonlinearity-errors of silicon-based sensor and tape-based flexible sensor in terms of percentage. [EPAPS]

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