ABSTRACT
This chapter considers the case of homogeneous particles exhibiting a single dielectric dispersion, this is somewhat simplified since there is only a single dielectric dispersion for any given medium conductivity. Three key features are used in best-fit analysis; those being the value of the crossover frequency in low conductivity media, the gradient of the rise in crossover as a function of the increasing medium conductivity, and the conductivity at which the crossover drops by a decade or more. Since the concentration governs the medium conductivity, this expression indicates that since the conductivity of the medium is increased, so the conductivity of the particle will increase but by a lesser degree. Dielectrophoresis is much more efficient than laser trapping, since both the generation of the laser beam and the dispersal of laser energy in the medium are wasteful of the energy.
