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A soft-lithographed chaotic electrokinetic micromixer for efficient chemical reactions in lab-on-chips

Campisi, Michele and Accoto, Dino and Damiani, Francesco and Dario, Paolo (2010) A soft-lithographed chaotic electrokinetic micromixer for efficient chemical reactions in lab-on-chips. Journal of Micro-Nano Mechatronics, 5 (3). pp. 69-76.

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Abstract

Mixing is one of the basic functions which automated lab-on-chips require for the effective management of liquid samples. In this paper we report on the working principle, design, fabrication and experimental characterization of a soft-lithographed micromixer for microfluidic applications. The device effectively mixes two liquids by means of chaotic advection obtained as an implementation of a Linked Twisted Map (LTM). In this sense it is chaotic. The liquids are electrokinetically displaced by generating rolls through AC electroosmosis on co-planar electrodes. The device performance has been tested on dyed DI-water for several voltages, frequencies and flow-rates, displaying good mixing properties in the range of 10÷100 kHz, at low peak-to-peak voltages (∼15÷20 volts). Low voltage supply, small dimensions and possibility of fabrication via standard lithographic techniques make the device highly integrable in lab-on-a-chip platforms.

Item Type:Article
Uncontrolled Keywords:Micromixing · Lab-on-chip · Soft lithography · Chaotic advection · AC electroosmosis
Subjects:Physical Science > Nanoelectronics
Physical Science > Nanomagnetics
Material Science > Nanostructured materials
ID Code:9523
Deposited By:SPI
Deposited On:21 Oct 2010 09:11
Last Modified:21 Oct 2010 09:11

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