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Sensors 2009, 9(12), 9444-9451; doi:10.3390/s91209444
Article

Circular High-Q Resonating Isotropic Strain Sensors with Large Shift of Resonance Frequency under Stress

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Received: 31 August 2009; in revised form: 13 October 2009 / Accepted: 3 November 2009 / Published: 25 November 2009
(This article belongs to the Special Issue Microbial Sensors and Biosensors)
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Abstract: We present circular architecture bioimplant strain sensors that facilitate a strong resonance frequency shift with mechanical deformation. The clinical application area of these sensors is for in vivo assessment of bone fractures. Using a rectangular geometry, we obtain a resonance shift of 330 MHz for a single device and 170 MHz for its triplet configuration (with three side-by-side resonators on chip) under an applied load of 3,920 N. Using the same device parameters with a circular isotropic architecture, we achieve a resonance frequency shift of 500 MHz for the single device and 260 MHz for its triplet configuration, demonstrating substantially increased sensitivity.
Keywords: RFIC; Q-factor; resonators; circular architecture; bioMEMS sensors; frequency shift; sensitivity RFIC; Q-factor; resonators; circular architecture; bioMEMS sensors; frequency shift; sensitivity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Melik, R.; Unal, E.; Kosku Perkgoz, N.; Puttlitz, C.; Demir, H.V. Circular High-Q Resonating Isotropic Strain Sensors with Large Shift of Resonance Frequency under Stress. Sensors 2009, 9, 9444-9451.

AMA Style

Melik R, Unal E, Kosku Perkgoz N, Puttlitz C, Demir HV. Circular High-Q Resonating Isotropic Strain Sensors with Large Shift of Resonance Frequency under Stress. Sensors. 2009; 9(12):9444-9451.

Chicago/Turabian Style

Melik, Rohat; Unal, Emre; Kosku Perkgoz, Nihan; Puttlitz, Christian; Demir, Hilmi Volkan. 2009. "Circular High-Q Resonating Isotropic Strain Sensors with Large Shift of Resonance Frequency under Stress." Sensors 9, no. 12: 9444-9451.


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