Non-wetting drops at liquid interfaces: from liquid marbles to Leidenfrost drops. Issue 31 (23rd June 2017)

• Record Type: Journal Article
• Authors: Wong, Clint Y. H.; Adda-Bedia, Mokhtar; Vella, Dominic
• Is Part Of: Soft matter. Volume 13:Issue 31(2017)
• Page Start: 5250
• Page End: 5260
• Publication Date: 2017-06-23
• Subjects: Soft condensed matter -- Periodicals; 530.413
• DOI: 10.1039/c7sm00990a
• Languages: English
• ISSNs: 1744-683X

Abstract

Abstract : We study the flotation of deformable, non-wetting drops at a liquid interface – a scenario that may be observed with a liquid marble floating on water, Leidenfrost drops, or by making the interface itself hydrophobic. Abstract : We consider the flotation of deformable, non-wetting drops on a liquid interface. We consider the deflection of both the liquid interface and the droplet itself in response to the buoyancy forces, density difference and the various surface tensions within the system. Our results suggest new insight into a range of phenomena in which such drops occur, including Leidenfrost droplets and floating liquid marbles. In particular, we show that the floating state of liquid marbles is very sensitive to the tension of the particle-covered interface and suggest that this sensitivity may make such experiments a useful assay of the properties of these complex interfaces.