Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 18, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3250175
Keywords
metamaterials; polymers; resonators; strain measurement; strain sensors
Categories
Funding
- Turkish National Academy of Sciences
- European Science Foundation
- NIHR [01EB010035-02]
- TUBITAK EEEAG [105E066, 105E065, 104E114, 106E020, 107E088, 107E297]
- EU [021391]
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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.
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