Free running droplets on packed powder beds
Access Status
Open access via publisher
Authors
Whitby, C.
Bian, X.
Sedev, Rossen
Date
2013Type
Conference Paper
Metadata
Show full item recordCitation
Whitby, C. and Bian, X. and Sedev, R. 2013. Free running droplets on packed powder beds. 1542 (1): pp. 1043-1046.
Source Title
AIP Conference Proceedings
ISBN
School
Department of Chemical Engineering
Collection
Abstract
We observed that water drops placed on horizontal beds of fine molybdenite particles move freely over the bed surface for about 1 second. The drops collect an irregular coating of unevenly distributed particles as they bounce and roll. We manipulated the distance that the drops travel, and hence the area of the droplet surface coated with particles, by varying the water surface tension and the kinetic energy of the initial droplet impact on the bed surface. Our results highlight the role of contact angle hysteresis in particle encapsulation of liquid drops.
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