Development and modeling of electrically triggered hydrogels for microfluidic applications

Author

Bassetti, Michael J. ; Chatterjee, Aveek N. ; Aluru, N.R. ; Beebe, David J.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Wisconsin-Madison, Madison, WI, USA

Volume

14

Issue

5

fYear

2005

Firstpage

1198

Lastpage

1207

Abstract

In this paper, we present progress in the development of electrically triggered hydrogels as components in microfluidic systems. Stimuli-responsive hydrogels are fabricated using liquid-phase photopolymerization techniques and are subjected to different voltage signals in order to determine their volume change response characteristics. A chemoelectromechanical model has been developed to predict the swelling and deswelling kinetics of these hydrogels. The Nernst-Planck equation, Poisson equation, and mechanical equations are the basic governing relationships, and these are solved in an iterative manner to compute the deformation of the hydrogel in response to varied electrical input.

Keywords

Poisson equation; microfluidics; polymer gels; Nernst-Planck equation; Poisson equation; chemoelectromechanical model; electrically triggered hydrogels; liquid-phase photopolymerization technique; mechanical equation; microfluidic applications; microfluidics; Electrodes; Kinetic theory; Laboratories; Microfluidics; Physics; Poisson equations; Predictive models; Protocols; Valves; Voltage; Actuator; electric field; electrically triggered hydrogel; hydrogel; microfluidics; valve;

fLanguage

English

Journal_Title

Microelectromechanical Systems, Journal of

Publisher

ieee

ISSN

1057-7157

Type

jour

DOI

10.1109/JMEMS.2005.845407

Filename

1516201