Viscoelectric constant

Viscoelectric Constant A reflection of the increase in viscosity of a liquid due to the presence of an electric field. It is given by the increase in viscosity divided by the viscosity in the absence of an electric field and divided also by the square of the electric-field gradient. 

The subscripts indicate the presence (Z ) or absence (0) of an electric field. The factor/is the viscoelectric constant for a variety of liquids,/has a value of about 2 X 10 V m. It means that the viscosity of the liquid undergoes a 2%-300% increase by applying an electric field of 10 -10 V m". In electrical double layers such field strengths are quite realistic. For the diffuse part of the electrical double layer, d /(x)/djc can be calculated using Equation 9.27 or 9.28. For instance, in a solution of a 1 1 electrolyte of 0.1 M ionic strength, the field strength at x where / = 50mV amounts to 6.4 x 10 V m". ... 

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