Deceleration Driven Wetting Transition During "Gentle" Drop Deposition
Hyuk-Min Kwon, Adam T. Paxson, Kripa K. Varanasi, Neelesh A. Patankar
TL;DR
This paper investigates how gentle droplet deposition can induce a wetting transition from Cassie-Baxter to Wenzel states through rapid deceleration and water hammer effects.
Contribution
It introduces a novel understanding of wetting transitions driven by deceleration and pressure effects during gentle droplet deposition.
Findings
Deceleration causes a wetting transition via water hammer pressure.
High-speed video captures the transition dynamics.
The transition mechanism is linked to energy transfer during deposition.
Abstract
We present high speed video of Cassie-Baxter to Wenzel drop transition during gentle deposition of droplets where the modest amount of energy is channeled via rapid deceleration into a high water hammer pressure.
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Taxonomy
TopicsSurface Modification and Superhydrophobicity · Electrohydrodynamics and Fluid Dynamics · Fluid Dynamics and Heat Transfer