Droplet impact onto superhydrophobic substrates

A liquid droplet impinging on a solid surface is a ubiquitous and essential process both in Nature and in technology.  The interplay of several parameters, including liquid type, surface property, and surrounding gas, often produces surprising outcomes and obscures underlying mechanism. With high-speed-imaging, we experimentally study drop impact on micro-and-nano- structured superhydrophobic surfaces, with a focus on the effects of small-scale roughness, impact velocity, and air pressure.

Figure 1: Cover of Langmuir showing water droplet impacting on superhydrophobic carbon nanofiber jungle.

Info: Detlef Lohse

Researchers: Amy TsaiDetlef Lohse.
Collaborators: Sergio Pachico, Leon Lefferts (Catalytic Processes and Materials, U Twente) 
Embedding: JMBC


Drop Impact upon Micro- and Nanostructured Superhydrophobic Surfaces[arΧiv]
P.A. Tsai, S. Pacheco, C. Pirat, L. Lefferts, and D. Lohse
Langmuir 25, 12293–12298 (2009)BibTeΧ
See also: cover of that issue

Max Planck Gesellschaft