Distortional Lifshitz Vectors and Helicity in Nematic Free Energy Density
International Journal of Sciences 2013 (07)
6 Pages Posted: 8 Jul 2017 Last revised: 15 Jul 2017
Date Written: July 11, 2013
Here we discuss the free energy of nematic liquid crystals using two vectors and the helicity, with the aim of having a compact form of its density. The two vectors are due to the splay and bend distortions of the director field. They have a polar nature, whereas the helicity is a pseudoscalar.
Keywords: Liquid crystals, Nematics, Free energy
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