| Issue |
Europhys. Lett.
Volume 67, Number 3, August 2004
|
|
|---|---|---|
| Page(s) | 411 - 417 | |
| Section | Condensed matter: structure, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10078-8 | |
| Published online | 01 July 2004 | |
Influence of director fluctuations on the electric-field phase diagrams of nematic liquid crystals
Raman Research Institute - C.V. Raman Avenue, Bangalore 560 080, India
Received:
5
January
2004
Accepted:
24
May
2004
We report the first experimental high–electric-field phase
diagram of a nematic liquid crystal with negative
dielectric anisotropy. The variation of the paranematic-nematic
transition temperature 
is essentially
linear with 
, whereas the Landau-de Gennes theory
predicts a quadratic variation. It is argued that the quenching
of director fluctuations by the field contributes significantly
to the thermodynamics of the transition.
PACS: 64.70.Md – Transitions in liquid crystals / 61.30.Gd – Orientational order of liquid crystals; electric and magnetic field effects on order / 61.30.Dk – Continuum models and theories of liquid crystal structure
© EDP Sciences, 2004
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