Title

Asymmetric Wicking and Reduced Evaporation Time of Droplets Penetrating a Thin Double-layered Porous Material

Document Type

Article

Publication Date

9-26-2013

Publication Title

Applied Physics Letters

Abstract

We study numerically and experimentally the penetration and evaporation dynamics of droplets wicking into a thin double-layered porous material with order-of-magnitude difference in the physical properties between the layers. We show that such double-layered porous materials can be used to create highly asymmetrical wicking properties, preventing liquid droplets wicking from one surface to the other, while allowing wicking in the reverse direction. In addition, these double-layered porous materials are shown to reduce the evaporation time of droplets penetrating into the porous material, compared with a single-layered porous material of equal thickness and physical properties similar to either of the layers.

Volume

103

Issue

13

First Page

131041

Last Page

131044

DOI

https://doi.org/10.1063/1.4823534

ISSN

0003-6951

Comments

ESSN: 1077-3118

Rights

© 2013 AIP Publishing LLC.

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