Abstract
The nonlinear dielectric effect (NDE) describes changes of dielectric constant under the strong electric field, with the metric defined $$ \left( {\varepsilon \left( E \right) - \varepsilon \left( {E \to 0} \right)} \right)/E^{2} $$ . This contribution discusses (i) miscibility, (ii) the isotropic phase of nematic liquid crystals, and (iii) the supercooled nitrobenzene. For comparison, the precritical evolution of $$ \varepsilon = \varepsilon \left( {E \to 0} \right) $$ is also presented. The discussion is extended for dynamic issues related to the “linear” and “nonlinear” relaxation times. Finally, basic problems of the dual-field NDE experimental technique are briefly presented.
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