Patent ID: 11860378
Assignee: OXFORD UNIVERSITY INNOVATION LIMITED
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. An optical cell, comprising: a first and second cell wall spaced apart by a gap, a first and second electrode for causing an electric field within the gap and a liquid crystal composition in the gap comprising mobile ions, wherein the liquid crystal composition has a chiral nematic phase with a pitch of 50 nm to 1000 nm, and wherein the liquid crystal composition is selected to exhibit fluid turbulence due to movement of the mobile ions in response to the electric field such that the fluid turbulence in the liquid crystal composition results in time varying spatially random scattering of light transmitted through the liquid crystal composition, wherein the liquid crystal composition has positive dielectric anisotropy and wherein the liquid crystal composition has positive anisotropic electrical conductivity.