Theory and experiment on resonant frequencies of liquid-air interfaces trapped in microfluidic devices

Journal of Applied Physics
Chandraprakash ChindamTony Jun Huang

Abstract

Bubble-based microfluidic devices have been proven to be useful for many biological and chemical studies. These bubble-based microdevices are particularly useful when operated at the trapped bubbles' resonance frequencies. In this work, we present an analytical expression that can be used to predict the resonant frequency of a bubble trapped over an arbitrary shape. Also, the effect of viscosity on the dispersion characteristics of trapped bubbles is determined. A good agreement between experimental data and theoretical results is observed for resonant frequency of bubbles trapped over different-sized rectangular-shaped structures, indicating that our expression can be valuable in determining optimized operational parameters for many bubble-based microfluidic devices. Furthermore, we provide a close estimate for the harmonics and a method to determine the dispersion characteristics of a bubble trapped over circular shapes. Finally, we present a new method to predict fluid properties in microfluidic devices and complement the explanation of acoustic microstreaming.

References

Apr 22, 2004·Lab on a Chip·Robin H LiuPiotr Grodzinski
Aug 26, 2009·Lab on a Chip·Daniel AhmedTony Jun Huang
Apr 29, 2011·Topics in Current Chemistry·Lorenzo CaprettoXunli Zhang
Sep 29, 2011·Lab on a Chip·Priscilla Rogers, Adrian Neild
Feb 7, 2013·Lab on a Chip·Peter Glynne-Jones, Martyn Hill

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Citations

Jun 26, 2014·Integrative and Comparative Biology·Yun Chen, Sungyon Lee
Dec 31, 2015·Small·Yuliang XieTony Jun Huang
Nov 26, 2015·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Darya Vladimirovna Radziuk, Helmuth Möhwald
Sep 6, 2014·Lab on a Chip·Charles A CartierKyle J M Bishop
Jun 7, 2014·Lab on a Chip·Nitesh NamaFrancesco Costanzo
Sep 11, 2021·Scientific Reports·Elnaz Attar Jannesar, Hossein Hamzehpour
Nov 13, 2021·Chemical Reviews·Athanasios G AthanassiadisPeer Fischer

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