Current Research

Superhydrophobic Surfaces

Jet Impingement on Superhydrophobic Surfaces

Through analytical models and experimentation we characterize the possible dynamics when a laminar jet impinges on a horizontal, superhydrophobic surface.  Multiple scenarios are possible after the jet hits the surface, including thin film growth out to a hydraulic jump, thin film breakup into droplets or filaments, or a collapse of the downstream water depth at the point of impingement.

Videos:

http://youtu.be/oKNqGkcE3uA

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Drag Reduction in Channels with Superhydrophobic Walls

 

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Heat Transfer in Channels with Superhydrophobic Walls

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Droplet Evaporation on Superhydrophobic Surfaces

Videos:

Droplet boiling on smooth hydrophobic surface at 130 C: http://youtu.be/c0V1LaDBdtg

Droplet boiling on smooth hydrophobic surface at 150 C: http://youtu.be/duTErfLtw6g

Droplet boiling on smooth hydrophobic surface at 230 C: http://youtu.be/eT-gn46YkiQ

 

 

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Droplet Bouncing on Superhydrophobic Surfaces

 

Videos:

Droplet impingement on a superhydrophobic surface: http://youtu.be/lzY_w4F5B4U

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Pool boiling on Superhydrophobic Surfaces

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*** NEW - APS 2013 videos ***

Liquid Droplet Impact Dynamics on Micro-Patterned Superhydrophobic Surfaces: http://arxiv.org/abs/1310.3799

Sessile droplet evaporation on superheated superhydrophobic surfaces: http://arxiv.org/abs/1310.3795