“…If the reorientation of the dipole moments of molecules occurs in a phase with a change of an electric field, that is, there is no phase shift between the exciting action and the dielectric response of the structure, then the susceptibility χ st is a constant. In particular, for FLC with helicoidally twisted directors, the section of the dependence χ st (f), where the static susceptibility does not depend on the frequency of the electric field change, is in the range from 1 to 10 Hz [15].…”