Question: Dielectrophoretic driving forces when an electric potential is imposed across an uncharged nonconducting medium, one may write (V E) = 0 where e is

Dielectrophoretic driving forces when an electric potential is imposed across an uncharged nonconducting medium, one may write (V ∙ εE) = 0 where e is the dielectric constant. Show how this equation can be used to calculate the distribution of electric field E in the region between two coaxial cylindrical metal electrodes of outer and inner radii R₂ and R₁, respectively. You may neglect variations in the dielectric constant. Toward which electrode will particles of positive susceptibility migrate, and how will their migration velocity vary with position?

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