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3-D Simulation of Electroosmotic Injection and Migration in Microchannels: Effects of Non-Rectangular Cross Section
Journal article

3-D Simulation of Electroosmotic Injection and Migration in Microchannels: Effects of Non-Rectangular Cross Section

Doh-Hyoung Lee, Bakhtier Farouk and H.-S Noh
Separation science and technology, v 46(2), pp 195-204
28 Dec 2010

Abstract

DC, direct current pinched injection microchip capillary electrophoresis 3-D simulation EDL, electric double layer DC electrokinetics electroosmosis 3-D, three-dimensional
A numerical study of the 3-D characteristics of electroosmotic injection and migration of sample species in microchip capillary electrophoresis systems is reported. In particular, the effect of a non-rectangular cross section commonly found in isotropically-etched microchannels is thoroughly investigated through 3-D numerical simulations. A non-rectangular cross section resulted in a vertically non-uniform sample plug during the loading stage. Conventional 2-D simulation approach can result in up to 40% errors in the calculation of injection qualities. It was also found that the 2-D simulation using a proper channel width has a good agreement with the 3-D simulation data.

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Web of Science research areas
Chemistry, Multidisciplinary
Engineering, Chemical
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