Bio-inspired microfluidic devices for passive, directional liquid transport: Model-based adaption for different materials

被引：35

作者：

Buchberger, Gerda ^{[1
]}

Hischen, Florian ^{[2
]}

Comanns, Philipp ^{[2
]}

Baumgartner, Richard ^{[3
]}

Kogler, Alexander ^{[3
]}

Buchsbaum, Andreas ^{[4
]}

Bauer, Siegfried ^{[3
]}

Baumgartner, Werner ^{[1
]}

机构：

[1] Johannes Kepler Univ Linz, Inst Biomed Mechatron, Altenberger Str 69, A-4040 Linz, Austria

[2] Rhein Westfal TH Aachen, Inst Biol 2, D-52074 Aachen, Germany

[3] Johannes Kepler Univ Linz, Dept Soft Matter Phys, A-4040 Linz, Austria

[4] Res Ctr Non Destruct Testing GmbH RECENDT GmbH, A-4040 Linz, Austria

来源：

EUROSENSORS 2015 | 2015年 / 120卷

关键词：

microfluidics; microfluidic diode; passive; unidirectional; aspect ratio; DIODE;

D O I：

10.1016/j.proeng.2015.08.576

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Texas Horned lizard has the ability to harvest moisture from ambience with its skin and to transport water directionally to its snout; at the same time water is hindered to flow in opposite direction. We present a passive microfluidic device for directional liquid transport which is inspired by this natural role model. To this end, we deduce a subnatural capillary network from the measurement data of the Texas Horned lizard's skin. We adapt the network to various liquid-polymer combinations with the help of a mathematical model. Applying a CO2 laser we engrave the structures into poly(methyl methacrylate) (PMMA). By distance measurements we verify that our devices transport liquids of different contact angles in a preferential direction, while stopping it in opposite direction. The applied network of interconnected capillary channels is advantageous, when it comes to defects during production or when particles block part of the capillary channels. The proposed concept is thought to be useful for micro-analysis devices and lubrication. (C) 2015 The Authors. Published by Elsevier Ltd.

引用

页码：106 / 111

页数：6