A study of electroviscosity in a liquid crystal
Abstract
A theory to explain the electroviscosity of the liquid crystal MBBA was developed. The electroviscosity theories for the other liquid crystals were shown to be nonapplicable. Inherent shear strength was shown to be a possible explanation for a published viscosity effect. The theory of producing this shear strength from an electric field was developed along with the effects on liquid crystal flow. The theory was compared with liquid crystal flow measurements. The electroviscosity in MBBA was degraded by the boundary layer effect as well as the effects of ion current. Several ways were found to reduce or eliminate these effects. The possibility of a 60 Hz three phase device was investigated.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1979
- Bibcode:
- 1979PhDT........81H
- Keywords:
-
- Electric Fields;
- Liquid Crystals;
- Viscosity;
- Boundary Layers;
- Flow Theory;
- Shear Strength;
- Electronics and Electrical Engineering