This paper proposes a cross-correlation wavenumber domain imaging method, which is suitable for leakage orientation in stiffened structures. The method carries on the spatial Fourier transform to the ...

A polymer corrugated diaphragm-based fiber-optic Fabry-Perot (FP) interferometer is proposed as an ultrasonic sensor and directly fabricated on an optical fiber tip by direct laser writing via ...

Google is upgrading the ultrasonic fingerprint biometric sensor for its latest flagship smartphone release. In 2024 the Google Pixel 9 featured an ultrasonic fingerprint sensor for the first time, ...