Electrohydrodynamic impedance studies

C. R. S. Silva, O. E. Barcia, O. R. Mattos, and C. Deslouis, "Partially Blocked Surface Studied by the Electrohydrodynamic Impedance," Journal of Electro-analytical Chemistry, 365 (1994) 133-138. 

The fact of modulating the square root of Q was naturally supported by the results of the Levich theory in steady-state conditions [8]. With the increasing development of impedance techniques, aided by a sophisticated instrumentation [2], the authors of the present work promoted the use of impedance concept for this type of perturbation and introduced the so-called electrohydrodynamic (EHD) impedance [9, 10]. A parallel approach has been also investigated by use of velocity steps in both theoretical and experimental studies [5, 11, 12]. More recently, Schwartz et al. considered the case of hydrodynamic modulations of large amplitude for increasing the sensitivity of the current response and also for studying additional terms arisen with non linearities [13-15],... 

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