Wide range room temperature electroclinic liquid crystal mixture with large induced tilt and very small layer contraction

Abstract

Optical polarizing microscopy, synchrotron X-ray scattering, and electro-optic studies in the SmA* phase of a formulated wide range room temperature liquid crystal mixture indicate a large electric field induced optical tilt up to 23.5 along with a very small contraction of smectic layers. Applied field primarily lifts the zero-field degeneracy of the azimuthal order of the molecules in smectic layers resulting in small layer contraction. V

Effect of non-mesogenic chiral terphenylate on the formulation of room temperature ferroelectric liquid crystal mixtures suitable for display applications

“…It might be mentioned here that when four fluorinated chiral dopants differing only in number and location of fluorine atoms in the molecular rigid core were doped (60 wt% of each) in the same host mixture (HM) they produced two ferroelectric and two antiferroelectric liquid crystal mixtures [16,17]. Not only that, one of the dopant at lower concentration (10 wt%) produced an electroclinic mixture with large field-induced tilt and very small layer contraction [18] and at much higher concentration (75 wt%), it formed a wide range ferroelectric mixture with a few hundred micro-second switching time [19]. Also, a different fluorinated chiral dopant with an oligomethylene spacer was found to produce a ferroelectric mixture with much faster response time [20].…”