When the potential of a small loop of wire is raised by a few volts with respect to a flat counter electrode it is possible to trap a dielectric particle in a position of stable equilibrium. 50 mu m diameter particles of divinyl benzene suspended in water have been studied. The dielectrophoretic response of such particles as a function of the frequency of the applied voltage should enable relaxation processes at the particle-liquid interface to be determined.
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Bahaj et al. (1979) studied this question.
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