A PMUT based photoacoustic system as a microfluidic concentration detector

Kaustav Roy; Vijayendra Shastri; Akshay Kumar; Jagi Rout; Isha Isha; Kritank Kalyan; Jaya Prakash; Rudra Pratap

doi:10.1117/12.2608934

3 March 2022 A PMUT based photoacoustic system as a microfluidic concentration detector

Kaustav Roy, Vijayendra Shastri, Akshay Kumar, Jagi Rout, Isha Isha, Kritank Kalyan, Jaya Prakash, Rudra Pratap

Proceedings Volume 11960, Photons Plus Ultrasound: Imaging and Sensing 2022; 1196013 (2022) https://doi.org/10.1117/12.2608934
Event: SPIE BiOS, 2022, San Francisco, California, United States

Conference Poster

Abstract

We report on the development of a novel piezo-MEMS-based optofluidic platform to detect the concentration of various species dissolved in a fluid. This platform employs piezoelectric micromachined ultrasound transducers (PMUTs) to work as a photoacoustic receiver, receiving ultrasound from fluid targets present in microfluidic channels while illuminated with a nanosecond pulsed laser. We fabricate both the PMUTs and the microfluidic channels and subsequently use them for the experiment. We also show the capability of PMUTs as a general photoacoustic receiver and demonstrate its signal-to-noise characteristics (~31) and its wide fractional bandwidth (~73%).

Conference Presentation

Citation Download Citation

Kaustav Roy, Vijayendra Shastri, Akshay Kumar, Jagi Rout, Isha Isha, Kritank Kalyan, Jaya Prakash, and Rudra Pratap "A PMUT based photoacoustic system as a microfluidic concentration detector", Proc. SPIE 11960, Photons Plus Ultrasound: Imaging and Sensing 2022, 1196013 (3 March 2022); https://doi.org/10.1117/12.2608934

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