THEORETICAL-STUDIES OF THE INFLUENCE OF BACKFLOW ON THE DYNAMICAL BEHAVIOR OF A FREDERICKS TRANSITION OF A FERROELECTRIC SMECTIC C-ASTERISKLIQUID-CRYSTAL IN THE BOOKSHELF GEOMETRY
T. Carlsson et al., THEORETICAL-STUDIES OF THE INFLUENCE OF BACKFLOW ON THE DYNAMICAL BEHAVIOR OF A FREDERICKS TRANSITION OF A FERROELECTRIC SMECTIC C-ASTERISKLIQUID-CRYSTAL IN THE BOOKSHELF GEOMETRY, Liquid crystals, 15(4), 1993, pp. 461-477
The elastic hydrodynamic theory for the ferroelectric smectic C phase
is reviewed and the governing equations for the dynamical behaviour o
f a surface stabilized ferroelectric liquid crystalline cell are writt
en down, taking the possibility of macroscopic mass flow in the system
into account. The influence of backflow effects on the dynamical cell
behaviour and a control parameter, determining whether backflow effec
ts will be of importance or not, is derived. It is shown that when bac
kflow effects are pronounced, the response time of the switching can b
e considerably decreased. Also, the shape of the c-director and veloci
ty-profiles across the cell are shown to be strongly dependent on the
presence of backflow.