Switchable opening and closing of a liquid marble via ultrasonic levitation

Zang, Duyang; Li, Jun; Chen, Zhen; Zhai, Zhicong; Geng, Xingguo; Binks, Bernard P.

Abstract

Liquid marbles have promising applications in the field of microreactors, where the opening and closing of their surfaces plays a central role. We have levitated liquid water marbles using an acoustic levitator and, thereby, achieved the manipulation of the particle shell in a controlled manner. Upon increasing the sound intensity, the stable levitated liquid marble changes from a quasi-sphere to a flattened ellipsoid. Interestingly, a cavity on the particle shell can be produced on the polar areas, which can be completely healed when decreasing the sound intensity, allowing it to serve as a microreactor. The integral of the acoustic radiation pressure on the part of the particle surface protruding into air is responsible for particle migration from the center of the liquid marble to the edge. Our results demonstrate that the opening and closing of the liquid marble particle shell can be conveniently achieved via acoustic levitation, opening up a new possibility to manipulate liquid marbles coated with non-ferromagnetic particles.

Citation

Zang, D., Li, J., Chen, Z., Zhai, Z., Geng, X., & Binks, B. P. (2015). Switchable opening and closing of a liquid marble via ultrasonic levitation. Langmuir : the ACS journal of surfaces and colloids, 31(42), 11502-11507. https://doi.org/10.1021/acs.langmuir.5b02917

• Journal Article Type: Article
• Acceptance Date: Oct 5, 2015
• Online Publication Date: Oct 6, 2015
• Publication Date: Oct 27, 2015
• Deposit Date: Nov 10, 2015
• Publicly Available Date: Nov 23, 2017
• Journal: Langmuir
• Print ISSN: 0743-7463
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 31
• Issue: 42
• Pages: 11502-11507
• DOI: https://doi.org/10.1021/acs.langmuir.5b02917
• Keywords: Spectroscopy; Electrochemistry; General Materials Science; Surfaces and Interfaces; Condensed Matter Physics
• Public URL: https://hull-repository.worktribe.com/output/380972
• Publisher URL: http://pubs.acs.org/doi/abs/10.1021/acs.langmuir.5b02917
• Additional Information: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.langmuir.5b02917
• Contract Date: Nov 23, 2017