Thermoresponsive switching of liquid flow direction on a two-face prism array

Sang Moon Kim; Do Hyun Kang; Jai Hyun Koh; Hyo Seon Suh; Hyunsik Yoon; Kahp Yang Suh; Kookheon Char

doi:10.1039/c3sm27901d

Thermoresponsive switching of liquid flow direction on a two-face prism array

Sang Moon Kim, Do Hyun Kang, Jai Hyun Koh, Hyo Seon Suh, Hyunsik Yoon, Kahp Yang Suh, Kookheon Char

Dept. of Chemical and Biomolecular Engineering

Seoul National University

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

27 Scopus citations

Abstract

We present a simple approach to reversibly switch the direction of liquid flow on physically symmetric and chemically asymmetric prism structures by exploiting the reversibility of surface wetting properties of a thermo-responsive polymer, poly(N-isopropyl-acrylamide). Such an asymmetric prism array creates a flow path in the direction of the lower critical contact angle. This allows a unidirectional "step flow" across the ridges of prism channels, which can be made reversible with a suitable temperature change.

Original language	English
Pages (from-to)	4145-4149
Number of pages	5
Journal	Soft Matter
Volume	9
Issue number	16
DOIs	https://doi.org/10.1039/c3sm27901d
State	Published - 28 Apr 2013

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abstract = "We present a simple approach to reversibly switch the direction of liquid flow on physically symmetric and chemically asymmetric prism structures by exploiting the reversibility of surface wetting properties of a thermo-responsive polymer, poly(N-isopropyl-acrylamide). Such an asymmetric prism array creates a flow path in the direction of the lower critical contact angle. This allows a unidirectional {"}step flow{"} across the ridges of prism channels, which can be made reversible with a suitable temperature change.",

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AU - Kim, Sang Moon

AU - Kang, Do Hyun

AU - Koh, Jai Hyun

AU - Suh, Hyo Seon

AU - Yoon, Hyunsik

AU - Suh, Kahp Yang

AU - Char, Kookheon

PY - 2013/4/28

Y1 - 2013/4/28

N2 - We present a simple approach to reversibly switch the direction of liquid flow on physically symmetric and chemically asymmetric prism structures by exploiting the reversibility of surface wetting properties of a thermo-responsive polymer, poly(N-isopropyl-acrylamide). Such an asymmetric prism array creates a flow path in the direction of the lower critical contact angle. This allows a unidirectional "step flow" across the ridges of prism channels, which can be made reversible with a suitable temperature change.

AB - We present a simple approach to reversibly switch the direction of liquid flow on physically symmetric and chemically asymmetric prism structures by exploiting the reversibility of surface wetting properties of a thermo-responsive polymer, poly(N-isopropyl-acrylamide). Such an asymmetric prism array creates a flow path in the direction of the lower critical contact angle. This allows a unidirectional "step flow" across the ridges of prism channels, which can be made reversible with a suitable temperature change.

UR - https://www.scopus.com/pages/publications/84878052144

U2 - 10.1039/c3sm27901d

DO - 10.1039/c3sm27901d

M3 - Article

AN - SCOPUS:84878052144

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Thermoresponsive switching of liquid flow direction on a two-face prism array

Abstract

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