Effects of graphene on electro-optic switching and spontaneous polarization of a ferroelectric liquid crystal
Abstract
A small quantity of graphene flakes was doped in a ferroelectric liquid crystal (FLC), and the field-induced ferroelectric electro-optic switching was found to be significantly faster in the FLC + graphene hybrid than that of the pure FLC. Further studies revealed that the suspended graphene flakes enhanced the FLC's spontaneous polarization by improving smectic-C ordering resulting from the π–π electron stacking, and reduced rotation viscosity by trapping some of the free ions of the FLC media. These effects coherently impacted the FLC-switching phenomenon, enabling the FLC molecules to switch faster on reversing an external electric field.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 15, 2014
- Source ID
- 10.1063/1.4896112
Entities
People
- Rajratan Basu
Organizations
- Office of Naval Research
- United States Naval Academy