A novel sensor based on a miniature multilayer ceramic capacitor was developed to refine and extend methods for point measurements of large acoustic pressures, such as those used in resonant systems filled with liquid or gas. The sensor features a fairly flat sensitivity in the frequency range between 20 kHz and 35 kHz and linearity up to nearly 60 kPa, while its size of about 0.5 mm does not significantly disturb resonance conditions or quality factor of the measured system. The sensor also allows to easily separate useful signals from background electromagnetic interference by selectively applying its polarisation DC voltage. A detailed description is given of sensor design, its properties, calibration, as well as its application to a single-bubble cavitation experiment.
A novel capacitor-based miniature ultrasonic sensor for point measurement of acoustic pressure in resonators with fluids
Buogo, SilvanoPrimo
Membro del Collaboration Group
;
2025
Abstract
A novel sensor based on a miniature multilayer ceramic capacitor was developed to refine and extend methods for point measurements of large acoustic pressures, such as those used in resonant systems filled with liquid or gas. The sensor features a fairly flat sensitivity in the frequency range between 20 kHz and 35 kHz and linearity up to nearly 60 kPa, while its size of about 0.5 mm does not significantly disturb resonance conditions or quality factor of the measured system. The sensor also allows to easily separate useful signals from background electromagnetic interference by selectively applying its polarisation DC voltage. A detailed description is given of sensor design, its properties, calibration, as well as its application to a single-bubble cavitation experiment.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
