Effect of particle size on the stripping dynamics during impacting of liquid marbles onto liquid film

Abstract

The robust attachment of particles at fluid interfaces is favorable for engineering new materials owing to large capillary energy, but it meets significant challenges when particle removal is a requirement. The previous study has shown that soap films can be utilized to achieve particle separation from liquid marbles. Here, we investigate the effects of particle size on the particle separation from liquid marbles by fast dynamics of drop impact on a soap film. Experimental observations disclose that the fast dynamics of liquid marble involve coalescence, bouncing, stripping, or tunneling through the film by controlling the falling height and drop volume. More importantly, the active regime of stripping mode can be selective-controlled by tuning the particle size, and the smaller stabilizing particles make wider stripping regime. This is attributed to the smaller change of surface energy resulting from the larger surface tension of LM wrapped by smaller particles. Theoretical analysis reveals that the stripping thresholds are determined by the energy competition between kinetic energy, the increased surface energy and viscous dissipation, which offers important insights into particle separation by tuning the particle size. The present study provides guidelines for applications that involve phase separation.

Article information

Article type
Paper
Submitted
22 Apr 2022
Accepted
19 Jun 2022
First published
23 Jun 2022

Soft Matter, 2022, Accepted Manuscript

Effect of particle size on the stripping dynamics during impacting of liquid marbles onto liquid film

Y. Feng, L. Wang, J. Xu and G. Liu, Soft Matter, 2022, Accepted Manuscript , DOI: 10.1039/D2SM00506A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements