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Electromechanical effects on multilayered cells in nonuniform rotating fields

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Sebastián Franco, José Luis and Muñoz San Martín, Sagrario and Sancho Ruíz, Miguel and Martínez López, Genoveva and Álvarez Galindo, Gabriel (2011) Electromechanical effects on multilayered cells in nonuniform rotating fields. Physical Review E, 84 (1, Par). ISSN 1539-3755

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Official URL: http://pre.aps.org/pdf/PRE/v84/i1/e011926


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Abstract

We use the Maxwell stress tensor to calculate the dielectrophoretic force and electrorotational torque acting on a realistic four-shelled model of the yeast Saccharomyces cerevisiae in a nonuniform rotating electric field generated by four coplanar square electrodes. The comparison of these results with numerical calculations of the dipolar and quadrupolar contributions obtained from an integral equation for the polarization charge density shows the effect of the quadrupole contribution in the proximity of the electrode plane. We also show that under typical experimental conditions the substitution of the multilayered cell by an equivalent cell with homogeneous permittivity underestimates the quadrupole contribution to the force and torque by 1 order of magnitude.


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© American Physical Society. The financial support of UCM—Santander to Bioelectromagnetism Research Group 910305, UCM—Santander Grant No. GR35/10-A-91056, and Comisión Interministerial de Ciencia y Tecnología Project No. FIS2008-00209 is gratefully acknowledged

Uncontrolled Keywords:Stress-Tensor Method, Dielectrophoretic Force, Electric-Field, Saccharomyces-Cerevisiae.
Subjects:Sciences > Physics > Physics-Mathematical models
Sciences > Physics > Electronics
Sciences > Physics > Electricity
ID Code:20378
Deposited On:04 Apr 2013 11:30
Last Modified:10 Dec 2018 15:09

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