PMUT-Powered Photoacoustic Detection: Revolutionizing Microfluidic Concentration Measurements
Abstract
This report introduces a novel optofluidic platform based on piezo-MEMS technology, capable of identifying subtle variations in the fluid concentration. The system utilizes piezoelectric micromachined ultrasound transducers (PMUTs) as receivers to capture sound waves produced by nanosecond photoacoustic (PA) pulses emanating from a fluid target housed in PDMS microchannels. Additionally, a dedicated low-noise single-channel amplifier has been developed to extract the minute analog voltage signals from the PMUTs, given the inherently weak ultrasound signals generated by fluid targets. The PMUTs' proficiency in detecting changes in fluid concentration under both static and time-varying conditions has been documented and verified, confirming the platform's efficacy in monitoring fluid concentrations.
Keywords
Cite
@article{arxiv.2312.02917,
title = {PMUT-Powered Photoacoustic Detection: Revolutionizing Microfluidic Concentration Measurements},
author = {Kaustav Roy and Akshay Kumar and Vijayendra Shastri and Isha Munjal and Kritank Kalyan and Anuj Ashok and Anthony Jeyaseelan and Jaya Prakash and Rudra Pratap},
journal= {arXiv preprint arXiv:2312.02917},
year = {2023}
}
Comments
9 pages, 10 figures