APM Acoustoelectric Coupling

Like the viscous entrainment of liquid by the surface, the electrical entrainment of ions decays exponentially with distance from the solid/liquid interface. Since the electric field has a decay length of A/2ir, however, ion coupling extends several micrometers into the liquid. Ion, dipole, and induced-dipole motion resulting from this acoustoelectric coupling lead to a perturbation in plate mode velocity and attenuation. 

67 from the dielectric constant for each solvent and a best-fit value of = 

2 X lO (same value used to fit all data). The model works well in the range of conductivities tr 2ac, where Tc = 

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