Journal
MICROFLUIDICS AND NANOFLUIDICS
Volume 9, Issue 6, Pages 1115-1124Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10404-010-0632-1
Keywords
Moving dielectrophoresis; Analytical solution for DEP; Traveling dielectrophoresis; Fourier series; Cells transportation
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Electrokinetics manipulation and separation of living cells employing microfluidic devices require good knowledge of the strength and distribution of electric field in such devices. AC dielectrophoresis is performed by generating non-uniform electric field using microsize electrodes. Among the several applications of dielectrophoretic phenomenon, this present study considers the recently introduced phenomenon of moving dielectrophoresis. An analytical solution using Fourier series is presented for the electric field distribution and dielectrophoretic force generated inside a microchannel. The potential at the upper part of the microchannel has been found by solving the governing equation of the electric potential with specific boundary conditions. The solutions for the electric field and dielectrophoretic force show excellent agreement with the numerical results. Microdevices were fabricated and experiments were carried out with living cells confirming and validating the analytical solutions.
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