Lehmann rotation of twisted bipolar cholesteric droplets: role of Leslie, Akopyan and Zel’dovich thermomechanical coupling terms of nematodynamics - Archive ouverte HAL
Article Dans Une Revue Liquid Crystals Année : 2016

Lehmann rotation of twisted bipolar cholesteric droplets: role of Leslie, Akopyan and Zel’dovich thermomechanical coupling terms of nematodynamics

Résumé

We show that the Leslie and texture-dependent Akopyan and Zel’dovich thermomechanical coupling terms of nematodynamics cannot explain the thermal Lehmann rotation of the twisted bipolar droplets observed in the coexistence region between a cholesteric phase and the isotropic liquid. On the other hand, these terms are pertinent below the transition temperature and can be determined by measuring the director rotation velocity in two different molecular configurations. In addition, a complete characterisation of the liquid crystal used (CCN-37) is also given.

Domaines

Chimie
Fichier non déposé

Dates et versions

hal-01648013 , version 1 (24-11-2017)

Identifiants

Citer

P. Oswald, G. Poy, A. Dequidt. Lehmann rotation of twisted bipolar cholesteric droplets: role of Leslie, Akopyan and Zel’dovich thermomechanical coupling terms of nematodynamics. Liquid Crystals, 2016, 44 (6), pp.969 - 988. ⟨10.1080/02678292.2016.1255363⟩. ⟨hal-01648013⟩
64 Consultations
0 Téléchargements

Altmetric

Partager

More