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Electric Field-Induced Fluid Velocity Field Distribution in DNA Solution |
ZHANG Ling-Yun, WANG Peng-Ye |
Laboratory of Soft Matter Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Beijing 100190 |
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Cite this article: |
ZHANG Ling-Yun, WANG Peng-Ye 2008 Chin. Phys. Lett. 25 3818-3821 |
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Abstract We present an analytical solution for fluid velocity field distribution of polyelectrolyte DNA. Both the electric field force and the viscous force in the DNA solution are considered under a suitable boundary condition. The solution of electric potential is analytically obtained by using the linearized Poisson--Boltzmann equation. The fluid velocity along the electric field is dependent on the cylindrical radius and concentration. It is shown that the electric field-induced fluid velocity will be increased with the increasing cylindrical radius, whose distribution also varies with the concentration
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Keywords:
87.10.-e
82.35.Rs
87.15.Ad
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Received: 13 May 2008
Published: 26 September 2008
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