Thermoresponsive switching of liquid flow direction on a two-face prism array
- Thermoresponsive switching of liquid flow direction on a two-face prism array
- 고재현; 김상문; 강도현; 서효선; 윤현식; 서갑양; 차국헌
- Issue Date
- Soft Matter
- VOL 9, NO 16-4149
- 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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