Rapid Deceleration-Driven Wetting Transition during Pendant Drop Deposition on Superhydrophobic Surfaces
Name
Kwon-2011-Rapid Deceleration-D.pdf
Size
442.36 KB
Format
Adobe PDF
Checksum (MD5)
c6cc23da74af6794c3fd113c78155d2c
Author(s)
Kwon, HyukMin
Paxson, Adam T.
Varanasi, Kripa K.
Patankar, Neelesh A.
Date Issued
January 2011
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Kwon, Hyuk-Min, et al. "Rapid Deceleration-Driven Wetting Transition During Pendant Drop Deposition on Superhydrophobic Surfaces.” Phys. Rev. Lett. 106, 036102 (2011). © 2011 American Physical Society.
Version
Final published version
Abstract
A hitherto unknown mechanism for wetting transition is reported. When a pendant drop settles upon deposition, there is a virtual “collision” where its center of gravity undergoes rapid deceleration. This induces a high water hammer-type pressure that causes wetting transition. A new phase diagram shows that both large and small droplets can transition to wetted states due to the new deceleration driven and the previously known Laplace mechanisms, respectively. It is explained how the attainment of a nonwetted Cassie-Baxter state is more restrictive than previously known.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevLett.106.036102
