Effect of backflow on the orientational and dissipation processes in Langmuir films.
The numerical study of the system of hydrodynamic equations that include both director motion and fluid flow, for a number of dynamic regimes in the 4-n -pentyl- 4' -cyanobiphenyl multilayer film on the water surface has been carried out. Calculations show that the relaxation time over which the torques exerted per unit of liquid crystals volume puts the director n[over] to be normal to the air-water interface, is one order of magnitude less in the case of accounting for the backflow effect than without accounting for that effect. The role of the charged water surface potential on the orientational relaxation process in the 5CB multilayer film on the water surface also has been investigated.
Department of Physical Electronics, Tokyo Institute of Technology, O-Okayama 2-12-1, Tokyo, Japan. iwamoto@pe.titech.ac.jp
Mitsumasa
M
Iwamoto
A A
AA
Vakulenko
A V
AV
Zakharov