Siloxane antiferroelectric liquid crystalline dimer exhibiting two field-free zero birefringent states.
Journal article, 2004

We studied the optical and electro-optical properties of a siloxane antiferroelectric liquid crystalline dimer exhibiting a large molecular tilt that reached a maximum value of 53°. When the molecular tilt angle in the antiferroelectric phase exceeded 45°, it was found that the field-free position of the slow vibration direction, which corresponds to the largest refractive index, flipped from a position along the smectic layer normal, to a position perpendicular to it. When the tilt angle became 45°, a zero birefringent state, which was theoretically predicted by de Meyere in 1996, was also found to occur twice in the antiferroelectric phase of the siloxane dimer.

dimer

siloxane

liquid crystalline

polarization

tilt

antiferroelectric

Author

Nils Olsson

University of Gothenburg

Ingolf Dahl

University of Gothenburg

Bertil Helgee

Chalmers, Department of Materials and Surface Chemistry, Polymer Technology

University of Gothenburg

Lachezar Komitov

University of Gothenburg

Liquid Crystals

0267-8292 (ISSN) 1366-5855 (eISSN)

Vol. 31 12 1555-1568

Subject Categories

Inorganic Chemistry

Telecommunications

Physical Chemistry

Other Engineering and Technologies not elsewhere specified

Atom and Molecular Physics and Optics

Organic Chemistry

Condensed Matter Physics

DOI

10.1080/02678290412331323130

More information

Created

10/7/2017