Article (Scientific journals)
One-piece micropumps from liquid crystalline core-shell particles
Fleischmann, Eva-Kristina; Liang, Hsin-Ling; Kapernaum, Nadia et al.
2012In Nature Communications, 3, p. 1178
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Keywords :
liquid crystal elastomer; actuator; microfluidics
Abstract :
[en] Responsive polymers are low-cost, light weight and flexible, and thus an attractive class of materials for the integration into micromechanical and lab-on-chip systems. Triggered by external stimuli, liquid crystalline elastomers are able to perform mechanical motion and can be utilized as microactuators. Here we present the fabrication of one-piece micropumps from liquid crystalline core-shell elastomer particles via a microfluidic double-emulsion process, the continuous nature of which enables a low-cost and rapid production. The liquid crystalline elastomer shell contains a liquid core, which is reversibly pumped into and out of the particle by actuation of the liquid crystalline shell in a jellyfish-like motion. The liquid crystalline elastomer shells have the potential to be integrated into a microfluidic system as micropumps that do not require additional components, except passive channel connectors and a trigger for actuation. This renders elaborate and high-cost micromachining techniques, which are otherwise required for obtaining microstructures with pump function, unnecessary.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Fleischmann, Eva-Kristina
Liang, Hsin-Ling
Kapernaum, Nadia
Giesselmann, Frank
Lagerwall, Jan  ;  Seoul National University
Zentel, Rudolf
Language :
English
Title :
One-piece micropumps from liquid crystalline core-shell particles
Publication date :
2012
Journal title :
Nature Communications
ISSN :
2041-1723
Publisher :
Nature Pub.lishing Group, London, United Kingdom
Volume :
3
Pages :
ARTN: 1178
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 21 March 2015

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