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Micromachines 2017, 8(4), 105; doi:10.3390/mi8040105

A Novel Electroosmotic Micromixer with Asymmetric Lateral Structures and DC Electrode Arrays

1
Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP), Chinese Academy of Science, Changchun 130033, Jilin, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
3
Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, Hainan, China
*
Author to whom correspondence should be addressed.
Academic Editors: Xiangchun Xuan and Shizhi Qian
Received: 28 February 2017 / Revised: 21 March 2017 / Accepted: 27 March 2017 / Published: 29 March 2017
(This article belongs to the Special Issue Micro/Nano-Chip Electrokinetics, Volume II)
View Full-Text   |   Download PDF [8882 KB, uploaded 29 March 2017]   |  

Abstract

We present a novel electroosmotic micromixer that consists of arrays of direct current (DC) asymmetric electrode and asymmetric lateral structures. By embedding asymmetric electrode arrays on the top and bottom walls of a rectangular microchannel appropriately, the flow perturbations and vortexes can be induced when a DC electric field is imposed. An efficient lateral structure is then sequentially combined with the rectangular microchannel, which enhances the mixing effect significantly. The effects of operational parameters such as the Reynolds number, the applied potential, and the Peclet number on the mixing performance are analyzed in detail by numerical simulations. The results indicate that an enhanced mixing performance can be achieved with low applied potential. The novel method proposed in this paper provides a simple solution for mixing in the field of micro-total-analysis systems. View Full-Text
Keywords: electroosmotic; micromixer; asymmetric electrode; lateral structure; mixing performance electroosmotic; micromixer; asymmetric electrode; lateral structure; mixing performance
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Chen, L.; Deng, Y.; Zhou, T.; Pan, H.; Liu, Z. A Novel Electroosmotic Micromixer with Asymmetric Lateral Structures and DC Electrode Arrays. Micromachines 2017, 8, 105.

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