New method of determination of the Fr eedericksz threshold based upon precise fluctuation measurement

Aude Caussarieu 1 Artyom Petrosyan 1 Sergio Ciliberto 1
1 Phys-ENS - Laboratoire de Physique de l'ENS Lyon
Abstract : In this paper we report a new method for determining the critical threshold of the Fr eedericksz transition driven by an electric field. It is based on the measurement of the amplitude of the molecule fluctuations as a function of the voltage di erence applied to a planar nematic cell. The precise measurement of the director fluctuations of the liquid crystal is made possible by the use of a very precise and sensitive polarization interferometer. The great advantage of the method is that it does not depend on complex ts as it is usually done in literature.
Keywords : Fr eedericksz transition Liquid crystals interferometric techn
Document type :
Journal articles
Complete list of metadatas

Cited literature [8 references]  Display  Hide  Download
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00852856
Contributor : Sergio Ciliberto <>
Submitted on : Wednesday, August 21, 2013 - 3:37:52 PM
Last modification on : Thursday, April 19, 2018 - 2:54:03 PM
Long-term archiving on : Thursday, April 6, 2017 - 3:38:19 AM

Files

threshold_Fredericks.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : ensl-00852856, version 1
  • ARXIV : 1308.4702

Collections

ENS-LYON | UNIV-LYON1

Citation

Aude Caussarieu, Artyom Petrosyan, Sergio Ciliberto. New method of determination of the Fr eedericksz threshold based upon precise fluctuation measurement. Applied Physics Letters, American Institute of Physics, 2013, 103 (144109), pp.4. ⟨ensl-00852856⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

149

Files downloads

123

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD