A roughness-based wettability switching membrane device for hydrophobic surfaces

Junghoon Lee; Bo He; Neelesh A. Patankar

doi:10.1088/0960-1317/15/3/022

A roughness-based wettability switching membrane device for hydrophobic surfaces

Junghoon Lee^*, Bo He, Neelesh A. Patankar

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

68 Scopus citations

Abstract

This work presents the development of a wettability switching membrane device using the surface roughness effect. We designed and fabricated a roughness switchable membrane device, consisting of a thin poly(dimethylsiloxane) (PDMS) membrane bonded on the top of a rough PDMS substrate. A thin (less than 2 μm) PDMS membrane fabrication technique was developed. The membrane device was tested and it was found that the surface wettability can be switched from medium hydrophobic to superhydrophobic states by deflecting the membrane with a pneumatic method. The reported mechanism is the first demonstration of a wettability switching mechanism using surface roughness modification. Theoretical analysis was used to explain experimental results.

Original language	English (US)
Pages (from-to)	591-600
Number of pages	10
Journal	Journal of Micromechanics and Microengineering
Volume	15
Issue number	3
DOIs	https://doi.org/10.1088/0960-1317/15/3/022
State	Published - Mar 2005

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/0960-1317/15/3/022

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abstract = "This work presents the development of a wettability switching membrane device using the surface roughness effect. We designed and fabricated a roughness switchable membrane device, consisting of a thin poly(dimethylsiloxane) (PDMS) membrane bonded on the top of a rough PDMS substrate. A thin (less than 2 μm) PDMS membrane fabrication technique was developed. The membrane device was tested and it was found that the surface wettability can be switched from medium hydrophobic to superhydrophobic states by deflecting the membrane with a pneumatic method. The reported mechanism is the first demonstration of a wettability switching mechanism using surface roughness modification. Theoretical analysis was used to explain experimental results.",

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AU - He, Bo

AU - Patankar, Neelesh A.

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N2 - This work presents the development of a wettability switching membrane device using the surface roughness effect. We designed and fabricated a roughness switchable membrane device, consisting of a thin poly(dimethylsiloxane) (PDMS) membrane bonded on the top of a rough PDMS substrate. A thin (less than 2 μm) PDMS membrane fabrication technique was developed. The membrane device was tested and it was found that the surface wettability can be switched from medium hydrophobic to superhydrophobic states by deflecting the membrane with a pneumatic method. The reported mechanism is the first demonstration of a wettability switching mechanism using surface roughness modification. Theoretical analysis was used to explain experimental results.

AB - This work presents the development of a wettability switching membrane device using the surface roughness effect. We designed and fabricated a roughness switchable membrane device, consisting of a thin poly(dimethylsiloxane) (PDMS) membrane bonded on the top of a rough PDMS substrate. A thin (less than 2 μm) PDMS membrane fabrication technique was developed. The membrane device was tested and it was found that the surface wettability can be switched from medium hydrophobic to superhydrophobic states by deflecting the membrane with a pneumatic method. The reported mechanism is the first demonstration of a wettability switching mechanism using surface roughness modification. Theoretical analysis was used to explain experimental results.

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A roughness-based wettability switching membrane device for hydrophobic surfaces

Abstract

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