Inducing drop to bubble transformation via resonance in ultrasound
Zang, Duyang; Li, Lin; Di, Wenli; Zhang, Zehui; Ding, Changlin; Chen, Zhen; Shen, Wei; Binks, Bernard P.; Geng, Xingguo
Professor Bernard P Binks B.P.Binks@hull.ac.uk
Professor of Physical Chemistry
Bubble formation plays an important role in industries concerned with mineral flotation, food, cosmetics, and materials, which requires additional energy to produce the liquid–gas interfaces. A naturally observed fact is, owing to the effect of surface tension, a bubble film tends to retract to reduce its surface area. Here we show a “reverse” phenomenon whereby a drop is transformed into a bubble using acoustic levitation via acoustic resonance. Once the volume of the cavity encapsulated by the buckled film reaches a critical value V*, resonance occurs and an abrupt inflation is triggered, leading to the formation of a closed bubble. Experiments and simulations both reveal that V* decreases with increasing acoustic frequency, which agrees well with acoustic resonance theory. The results afford enlightening insights into acoustic resonance and highlight its role in manipulating buckled fluid–fluid interfaces, providing a reference for fabricating unique core–shell-like materials.
|Journal Article Type||Article|
|Publication Date||Dec 1, 2018|
|Publisher||Nature Publishing Group|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Zang, D., Li, L., Di, W., Zhang, Z., Ding, C., Chen, Z., …Geng, X. (2018). Inducing drop to bubble transformation via resonance in ultrasound. Nature communications, 9(1), https://doi.org/10.1038/s41467-018-05949-0|
|Keywords||General Biochemistry, Genetics and Molecular Biology; General Physics and Astronomy; General Chemistry|
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
You might also like
Aqueous foams in the presence of surfactant crystals
Capsules from Pickering emulsion templates