A Wafer-Bonded, Floating Element Shear-Stress Sensor Using a Geometric Moire Optical Transduction Technique
FLORIDA UNIV GAINESVILLE MECHANICAL AND AEROSPACE ENGINEERING
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This paper presents a geometric Moire optical-based floating-element shear stress sensor for wind tunnel turbulence measurements. The sensor was fabricated using an aligned waferbondthin-back process producing optical gratings on the backside of a floating element and on the top surface of the support wafer. Measured results indicate a static sensitivity of 0.26 micronsPa, a resonant frequency of 1.7 kHz, and a noise floor of 6.2square root Hz.
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