Study of Reentrant Nematic and Smectic Phases Using Dielectric Relaxation

Abstract

Dielectric properties are reported of new pure substances exhibiting reentrant nematic and reentrant smectic phases. The quasistatic dielectric constants (ε′_‖, ε′_⊥, ε′_is) and the dispersion of ε*_‖, ε*_⊥ and ε*_is is the radiofrequency range (5Hz-1GHz) have been investigated. The current experimental dielectric behaviours are examined and discussed using our experimental data.