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生活與物理-奈米生技 - 中研院物理研究所

生活與物理-奈米生技 - 中研院物理研究所

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DEP for Manipulation of Biomolecules<br />

<br />

• Dielectrophoresis (DEP) is a phenomenon in which a<br />

force is exerted on a dielectric particle in a non-uniform<br />

electric field – <br />

<br />

<br />

Force acting on<br />

polarizable particles:<br />

Sphere of radius r,<br />

ε m = 80 for water<br />

C.F. Chou et al.,<br />

Biophysical Journal (2002)<br />

• DEP is a technique which can be used to separate cells<br />

or molecules based on their difference in polarizability

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