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2008 Design of Medical Devices Conference Abstracts

Design and Fabrication of a Micropump With Mixing Function for LOC OPEN ACCESS

[+] Author and Article Information
Ho-jin Kang, Bum-kyoo Choi

 Sogang University, Department of Mechanical Engineering, Seoul, Korea

J. Med. Devices 2(2), 027511 (Jun 11, 2008) (1 page) doi:10.1115/1.2934349 History: Published June 11, 2008

Abstract

A micropump, which includes a mixing function, has been fabricated. For the application to LOC (Lab On a chip), the micropump utilized PBS (Phosphate Buffered Saline) solution as the working medium. The solution is commonly used in biochemistry and cell culturing. The portable system and low energy consumption are important to realize the LOC device. In spite of a low voltage of 4V, the flow rate of the micropump was 0.02466mlmin. The new micropump shows more enhanced performance than existing micropumps. The micropump uses Lorentz force actuation. The Lorentz force acting onto the ionic current in the PBS solution generates the fluid flow in the micropump. For the accurate prediction on flow direction, a computer simulation has been made using commercial CFD code. The results of simulation showing circulation direction were verified by experiment. The fluid circulation from each electrode combined and acted as the mixer in the micropump. The micropump was fabricated 20.2mm in length, 1mm in width and 400 μm in electrode length. To measure accurately, a high speed digital camera was used.

Copyright © 2008 by American Society of Mechanical Engineers
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