Definition
The total force exerted on a polarizable particle by a spatially nonuniform electrical field is the sum of the electrophoretic force (product of the net particle charge and the field strength) and the dielectrophoretic force (product of the particle dipole moment and the field strength gradient). Electrophoretic force effects vanish in an alternating current (AC) field of a sufficiently high frequency due to the zero time average over the field oscillations. In contrast, dielectrophoretic force operates in AC fields as its averaging yields a nonzero value whose magnitude is the product of the particle volume, the gradient of the time-average squared field strength, and the relative particle polarization at the field frequency. Depending on whether the particle is more or less polarizable...
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Khusid, B. (2016). AC Dielectrophoresis and Dipolar Interactions for Particle Manipulation. In: Bhushan, B. (eds) Encyclopedia of Nanotechnology. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-9780-1_101013
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DOI: https://doi.org/10.1007/978-94-017-9780-1_101013
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