On the thermal dependence of the twist viscosity in nematic liquid crystals

Jacques Prost , G. Sigaud , B. Regaya

We show that the twist viscosity γ1 of 4-methoxy-4' n butyl azoxybenzene varies according to the law : γ1 ∼ S exp(E/kT). Generalization to nematics with negative order parameter suggests that the relevant expression could be : γ1 ∼ |S| exp(E/kT).

Mots clés: nematic liquid crystals; organic compounds; viscosity of liquids; thermal dependence; twist viscosity; negative order parameter; 4 methoxy 4' n butyl azoxybenzene

Domaines: Articles anciens

Jacques Prost, G. Sigaud, B. Regaya. On the thermal dependence of the twist viscosity in nematic liquid crystals. Journal de Physique Lettres, 1976, 37 (12), pp.341-343. ⟨10.1051/jphyslet:019760037012034100⟩. ⟨jpa-00231307⟩