Long-time isothermal currents in liquid crystals are in test. It is shown, that in nematic as well as isotropic pentacyanobiphenyl/5CB/quasi DC conductivity is observed for elevated time of measurements. The investigation of these current are presented. It is suggested that these current may originate from carrier exchange between solute molecules and electrode due to strong interface field.
Wiktor L. Szymanski,
Aleksander B. Szymanski,
"Interfacial effects in nematic liquid crystals", Proc. SPIE 4017, Polymers and Liquid Crystals, (14 December 1999); doi: 10.1117/12.373712; https://doi.org/10.1117/12.373712