A Miniature Photoacoustic Sensing System with Advanced PMUT and VCSEL Devices

This study presents a high-fill-factor piezoelectric micromachined ultrasonic transducer (PMUT) array fabricated via the cavity silicon-on-insulator (CSOI) process. The center frequency of the PMUT is 4.89 MHz in air and 3.5 MHz in a gel-type couplant, along with a -6 dB photoacoustic (PA) bandwidth...

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Publié dans:IEEE transactions on ultrasonics, ferroelectrics, and frequency control. - 1986. - PP(2025) vom: 01. Okt.
Auteur principal: Fang, Yexing (Auteur)
Autres auteurs: Bao, Aocheng, Shi, Zihao, Gan, Jinghan, Sheng, Bowen, Zhang, Haixia, Lu, Yipeng
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Sujets:Journal Article