A statistical-mechanical theory of the elastic constants of a liquid crystal based on the Onsager expansion is reexamined, with emphasis on the terms linear in the gradients of the director. This gives a microscopic theory of the piezoelectric effect in nematic liquid crystals, and of the spontaneous twisting of a cholesteric. Model cases of tapered rods, bent rods, and threaded rods are considered.
|Number of pages||7|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|State||Published - 1976|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics