Electric-field-controlled light scattering in ferroelectric liquid crystals

Speckle‐noise suppression due to a single ferroelectric liquid‐crystal cell

“…A helix FLC with electrically controlled birefringence and light scattering [11][12][13] developed at the Lebedev Institute was used. The scheme of a cell with this FLC is shown in Fig.…”

“…However, the dipole moments of some FLC molecules are initially oriented at an angle with the E direction, and a domain with such energetically unfavorable orientation of molecules is not stable. Because of this, 13 in such a domain the regions appear where the dipole molecules are reoriented into an energetically favorable direction; first of all, in smectic layers with maximal deviation of the azimuth angle from ϕ = 0 (or ϕ = π).…”

“…The evolution of this process results in the formation of transient domains, 13,15 i.e., small regions with some dipole moments oriented opposite to the E direction that divides regions with dipoles oriented along the E direction. The transient domains represent a coupled state of two 180°d omain walls of different signs.…”

Paper No S5.1: Fast Bistable Intensive Light Scattering in Helix‐Free Ferroelectric Liquid Crystals

“…In our past work , we reported the electro‐optical response of dynamic light scattering observed in a helical FLC test cell. A scattering texture consisting of microdomains appeared during a nonlinear reorientation process of the FLC molecular director in responding to an alternating electric field E .…”

Light Scattering of Short Helix Pitch Ferroelectric Liquid Crystal

“…Modulation of the helix free FLC domains structure in electric field [8][9][10] is an origin of the electrically controlled polarized light scattering [11,12]. Any level of the polarized light scattering can be memorized in this case after the driving voltage switching off because of the multistability effect [8][9][10].…”