Electric sonic amplitude


Electric sonic amplitude

Electric sonic amplitude is an electroacoustic phenomena that is reverse to colloid vibration current. It occurs in colloids, emulsions and other heterogeneous fluids under influence of oscillating electric field. This field moves particles relative to the liquid, which generates ultrasound.

Electric sonic amplitude was experimentally discovered by Oja with co-authors in early 1980’s. [Oja, T., Petersen, G., and Cannon, D. “Measurement of Electric-Kinetic Properties of a Solution”, US Patent 4,497,208,1985] It is also widely used for characterizing ζ-potential in dispersions and emulsions. There is review of this effect theory, experimental verification and multiple applications published by Hunter. [Hunter, R.J. “Review. Recent developments in the electroacoustic characterization of colloidal suspensions and emulsions”, Colloids and Surfaces, 141, 37-65, 1998]

References

ee also

*Interface and Colloid Science


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