Circular High-Q Resonating Isotropic Strain Sensors with Large Shift of Resonance Frequency under StressReport as inadecuate




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1

Department of Electrical and Electronics Engineering, Bilkent University, Bilkent, 06800 Ankara, Turkey

2

Nanotechnology Research Center, and Institute of Materials Science and Nanotechnology, Bilkent University, Bilkent, 06800 Ankara, Turkey

3

Department of Physics, Bilkent University, Bilkent, 06800 Ankara, Turkey

4

Department of Mechanical Engineering and School of Biomedical Engineering, Orthopaedic Bioengineering Research Laboratory, Colorado State University, Fort Collins, CO 80523, USA





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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. View Full-Text

Keywords: RFIC; Q-factor; resonators; circular architecture; bioMEMS sensors; frequency shift; sensitivity RFIC; Q-factor; resonators; circular architecture; bioMEMS sensors; frequency shift; sensitivity





Author: Rohat Melik 1,2, Emre Unal 2, Nihan Kosku Perkgoz 2, Christian Puttlitz 4 and Hilmi Volkan Demir 1,2,3,*

Source: http://mdpi.com/



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