A Novel Preconcentration Method for Microchip Based Electrophoresis and its Numerical Simulation

Author:

Cai Hao Yuan1,Chen Xing1,Li Hui1,Cui Da Fu1

Affiliation:

1. Chinese Academy of Sciences

Abstract

A novel preconcentration method for efficient DNA sample stacking during sample introduction and injection in microchip electrophoresis is presented in this paper. The method suggests that a pair of sample stacking electrodes is designed after the double-T section. A sample stacking electrical field can be established after sample introduction inside the double-T section, so that the sample stacking procedure can be controlled accurately and efficiently. In order to test this method’s validity, a numerical model is setup using COMSOL Multiphysics software. The simulation result shows that the peak DNA concentration can be increased up to 10 fold by this method. These results demonstrate the great potential for significantly enhance DNA sequencing speed and resolution in microchip electrophoresis.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Reference11 articles.

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3. M.G. Vazquez M, Mitnik L, Desmarais S, Matsudaira P, Ehrlich D, Anal Chem, 74 (2002) 1952-(1961).

4. D.S. Burgi, B.C. Giordano in: Handbook of Capillary and Microchip Electrophoresis and Associated Microtechniques 3rd Edition, edited by J.P. Landers, Chapter 13, CRC Press (2008).

5. G. Henkelman, G. Johannesson and H. Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D. Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000).

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