The experimental results on thermo- and electro-optical properties of two liquid crystalline model dimers: disiloxane and disilazane and their blends with polyester resin (Polimal 192) are reported. The effects of temperature, voltage, and frequency of alternating electric field on electro-optical and switching results are discussed. Siloxane dimer shows a tendancy to planar orientation of molecules in (ac) electric field resulting from its negative dielectric anisotropy. Silazane dimer shows the trend toward homeotropic orientation of molecules, which is disturbed by the occurrence of an electrodynamic instability involving turbulent flow (at 2 kHz applied voltage.

Date Published: 2 August 1995
PDF: 10 pages
Proc. SPIE 2372, Liquid Crystals: Materials Science and Applications, (2 August 1995); doi: 10.1117/12.215525

Published in SPIE Proceedings Vol. 2372:
Liquid Crystals: Materials Science and Applications
Jozef Zmija, Editor(s)