1985•Electronics LettersRequires access
Acoustic resonator transducer for operation in air
J. Fox, Butrus T. Khuri-Yakub, Gordon S. Kino
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Abstract
An acoustic resonator and electronic system for operation in air are described. The transducer operates in a resonant mode and can be utilised to measure the distance between the transducer and a reflecting object. Experimental results are presented for a 275 kHz resonator transducer that can measure distances with better than 0.5 μm resolution at a 0.6 mm range. Applications to noncontacting surface profile measurements are also demonstrated.