R. Moldovan et Mr. Puica, Concentration dependence in the Landau-de Gennes theory for nematic lyotropic liquid crystals, PHYS LETT A, 286(2-3), 2001, pp. 205-209
The Letter presents an attempt to include the concentration dependence in t
he Landau-de Gennes theory for the nematic to isotropic phase transition fo
r nematic lyotropic liquid crystals by introducing a critical concentration
for the lyotropic solutions. This allows to describe phase transitions of
micellar solutions as depending on temperature and concentration. An estima
tion of phenomenological coefficients of the CsPFO/water system is made, an
d we obtained the trends of the order parameter curves in function of tempe
rature and concentration in good agreement with experimental results from l
iterature. (C) 2001 Elsevier Science B.V. All rights reserved.