Abstract
These materials are the helix-free ferroelectric liquid crystals (FLCs) with small spontaneous polarization (less than 50 nC / cm2) and high viscosity (from 0.3 to 1.0 Poise). They were specially designed for fast low-voltage displays and light modulators operating in transparent or scattering mode. The FLC director reorientation is due to motion of solitons at the transition to Maxwellian mechanism of energy dissipation. Such FLCs are able to efficiently modulate the visible and near IR radiation at frequencies up to 7 kHz at the electric field strength of the order of 1-2 V/μm. The hysteresis-free and smooth dependence of the optical response on the external electric field is in the frequency range up to 6 kHz. In the bistable light scattering mode one can memorize an optical state for the time exceeding the switching time up to six orders of magnitude. Besides, the spatially inhomogeneous modulation of the light phase delay is demonstrated that is able to suppress the speckle-noise in images formed by a laser beam. Novel FLC-materials are compatible with FLCOS, 3D and FSC technologies.
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