Self-Propelled Droplet Removal from Hydrophobic Fiber-Based Coalescers.
Journal Article (Journal Article)
Fiber-based coalescers are widely used to accumulate droplets from aerosols and emulsions, where the accumulated droplets are typically removed by gravity or shear. This Letter reports self-propelled removal of drops from a hydrophobic fiber, where the surface energy released upon drop coalescence overcomes the drop-fiber adhesion, producing spontaneous departure that would not occur on a flat substrate of the same contact angle. The self-removal takes place above a threshold drop-to-fiber radius ratio, and the departure speed is close to the capillary-inertial velocity at large radius ratios.
Full Text
Duke Authors
Cited Authors
- Zhang, K; Liu, F; Williams, AJ; Qu, X; Feng, JJ; Chen, C-H
Published Date
- August 2015
Published In
Volume / Issue
- 115 / 7
Start / End Page
- 074502 -
PubMed ID
- 26317724
Electronic International Standard Serial Number (EISSN)
- 1079-7114
International Standard Serial Number (ISSN)
- 0031-9007
Digital Object Identifier (DOI)
- 10.1103/physrevlett.115.074502
Language
- eng