A highly flexible superhydrophobic microlens array with small contact angle hysteresis for droplet-based microfluidics

Title
A highly flexible superhydrophobic microlens array with small contact angle hysteresis for droplet-based microfluidics
Authors
임매순김동한Xing-Jiu Huang이주형윤준보최양규
Issue Date
2009-01
Publisher
IEEE MEMS Conference
Abstract
This paper reports a highly flexible superhydrophobic and superhydrorepellent microlens array substrate with very low flow resistance. Even though the microlens array has no nanostructures, it shows hydrophobic property due solely to its geometrical effect. A contact angle of 165deg and hysteresis of 3deg are achieved on a flexible polydimethylsiloxane (PDMS) microlens array substrate with a Teflon (polytetrafluoroethylene) coating. Moreover, double-layered metals (Cr/Au) are sandwiched between the PDMS and Teflon layers for electrostatic or electrowetting-on-dielectric (EWOD) actuation. Due to its low flow resistance and superhydrophobicity, the array can be used as a microfluidic component that reduces external pressure and power consumption for mobility.
URI
http://pubs.kist.re.kr/handle/201004/71057
ISSN
-
Appears in Collections:
KIST Publication > Conference Paper
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