Continuous flow actuation between external reservoirs in small-scale devices driven by surface acoustic waves

Lab on a Chip
Michael B DentryLeslie Y Yeo

Abstract

We have designed and characterized a surface acoustic wave (SAW) fluid actuation platform that significantly improves the transmission of sound energy from the SAW device into the fluid in order to obtain enhanced performance. This is in distinct contrast to previous SAW microfluidic devices where the SAW substrate is simply interfaced with a microchannel without due consideration given to the direction in which the sound energy is transmitted into the fluid, thus resulting in considerable reflective and dissipative losses due to reflection and absorption at the channel walls. For the first time, we therefore demonstrate the ability for continuous fluid transfer between independent reservoirs driven by the SAW in a miniature device and report the associated pressure-flow rate relationship, in which a maximum flow rate of 100 μl min(-1) and pressure of 15 Pa were obtained. The pumping efficiency is observed to increase with input power and, at peak performance, offers an order-of-magnitude improvement over that of existing SAW micropumps that have been reported to date.

References

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Citations

Nov 26, 2015·Analytical Chemistry·Damith E W PatabadigeChristopher T Culbertson
Sep 27, 2014·Analytical Chemistry·Marco TravagliatiMarco Cecchini
May 29, 2015·Lab on a Chip·Ali Oskooei, Axel Günther
May 31, 2018·Soft Matter·Jasmine O CastroLeslie Y Yeo
Mar 29, 2014·Advanced Materials·Richie J ShiltonMarco Cecchini
Jul 28, 2016·Science Advances·David J CollinsYe Ai
Jun 21, 2016·Biofabrication·Stephanie KnowltonSavas Tasoglu
Apr 3, 2019·Micromachines·Hendrik HubbePouyan E Boukany
Dec 28, 2019·Analytical Chemistry·Hongwei CaiFeng Guo
May 16, 2019·Analytical Chemistry·Zhuhao WuFeng Guo
Aug 28, 2021·Micromachines·Qianwen XuShiwei Ricky Lee

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