Comparing cleaning effects of gas and vapor bubbles in ultrasonic fields.

Ultrasonics Sonochemistry
Ryeol ParkWonjung Kim

Abstract

The dynamic actions of cavitation bubbles in ultrasonic fields can clean surfaces. Gas and vapor cavitation bubbles exhibit different dynamic behaviors in ultrasonic fields, yet little attention has been given to the distinctive cleaning effects of gas and vapor bubbles. We present an experimental investigation of surface cleaning by gas and vapor bubbles in an ultrasonic field. Using high-speed videography, we found that the primary motions of gas and vapor bubbles responsible for surface cleaning differ. Our cleaning tests under different contamination conditions in terms of contaminant adhesion strength and surface wettability reveal that vapor and gas bubbles are more effective at removing contaminants with strong and weak adhesion, respectively, and furthermore that hydrophobic substrates are better cleaned by vapor bubbles. Our study not only provides a better physical understanding of the ultrasonic cleaning process, but also proposes novel techniques to improve ultrasonic cleaning by selectively employing gas and vapor bubbles depending on the characteristics of the surface to be cleaned.

References

Jun 19, 2012·Ultrasonics Sonochemistry·Joost RoozeJos T F Keurentjes
Nov 16, 2013·Ultrasonics Sonochemistry·Liyan LiuWei Tan
May 20, 2015·Ultrasonics Sonochemistry·Georges L ChahineChao-Tsung Hsiao
Jun 10, 2015·Ultrasonics Sonochemistry·Timothy J Mason
Jul 5, 2015·Ultrasonics Sonochemistry·Nor Saadah Mohd YusofMuthupandian Ashokkumar
Jul 19, 2015·Ultrasonics Sonochemistry·Fabian Reuter, Robert Mettin
Jul 29, 2015·Ultrasonics Sonochemistry·Junhee ChoiWonjung Kim
Jun 2, 2016·Ultrasonics Sonochemistry·Fabian ReuterRobert Mettin
Feb 16, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Nayoung KimHyungrok Do
Feb 23, 2019·Ultrasound in Medicine & Biology·Nina VyasA Damien Walmsley

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