Frequency tunable label-free surface acoustic wave-based flow sensor
Aurore F. Quelennec, Jason J. Gorman, Darwin Reyes-Hernandez
We present a label-free SAW-based flow sensor with enhanced precision and repeatability. This sensor improves the signal-to-noise ratio by one order of magnitude (dB scale) at an optimized frequency, and lowers the measurable flow rate to 5 μL/min (from 250 μL/min) when compared to our single frequency approach in time-domain. The device was designed so that the distance between the transducers is tunable to further increase its sensitivity to 40 mdB/(μL/min). This sensor provides an easy-to-integrating sensing element that does not affect the principal functionality of the microfluidic network and offers local flow information.
Proceedings of Micro Total Analysis Systems 2020
October 4-9, 2020
Virtual Online, MD, US
The 24th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2020)
, Gorman, J.
and Reyes-Hernandez, D.
Frequency tunable label-free surface acoustic wave-based flow sensor, Proceedings of Micro Total Analysis Systems 2020, Virtual Online, MD, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=930523
(Accessed December 2, 2023)