Document Type

Article

Publication Date

3-15-2012

Abstract

Droplet impact dynamics determines the performance of surfaces used in many applications such as anti-icing, condensation, boiling, and heat transfer. We study impact dynamics of water droplets on surfaces with chemistry/texture ranging from hydrophilic to superhydrophobic and across a temperature range spanning below freezing to near boiling conditions. Droplet retraction shows very strong temperature dependence especially on hydrophilic surfaces; it is seen that lower substrate temperatures lead to lesser retraction. Physics-based analyses show that the increased viscosity associated with lower temperatures combined with an increased work of adhesion can explain the decreased retraction. The present findings serve as a starting point to guide further studies of dynamic fluid-surface interaction at various temperatures. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3692598]

Publication Title

Applied Physics Letters

Volume

100

Issue

11

Required Publisher's Statement

Copyright 2012 American Institute of Physics. The original published version of this article may be found at http://dx.doi.org/10.1063/1.3692598.

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