INVESTIGADORES
CONDAT Carlos Alberto
artículos
Título:
Flow induced transitions in smectic liquid crystals
Autor/es:
C.A. CONDAT; D. THIRUMALAI
Revista:
JOURNAL OF CHEMICAL PHYSICS
Editorial:
American Institute of Physics
Referencias:
Año: 1987 vol. 86 p. 4548 - 4554
ISSN:
0021-9606
Resumen:
The effects of an elongational flow field on the liquid-crystalline A-C and N-A phase transitions are investigated using a mean field approximation. The presence of the flow is shown to make the A-C transition sharper; it becomes first order at high strain rates. The N-A transition is weakened because the flow makes the nematic range effectively wider. It is also shown that the theory presented here can be used to analyze the effects of constant external electric field gradients on a system of molecules which do not have permanent dipole moments.
