An optical microphone could soon be helping patients undergoing medical scans. Patients inside magnetic resonance imaging (MRI) scanners could soon be able to speak to physicians controlling the scan ...
Typically, optical pressure sensors use a silicon diaphragm placed at the end of an optical fiber interferometer. Variations in pressure cause the diaphragm to flex, altering the interferometer's ...
(a) The principle of the ultrasound testing in BHM; (a) FPI fiber-optic ultrasonic sensor; (b) Response of the sensor under 27.73 Pa acoustic excitation in frequency-domain; (c) Signal intensity ...
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