Flexoelectric coefficient measurements in the nematic liquid crystal phase of 5CB
F. Castles,
S. C. Green,
D. J. Gardiner,
S. M. Morris,
H. J. Coles
Affiliations
F. Castles
Centre of Molecular Materials for Photonics and Electronics, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
S. C. Green
MathWorks, Matrix House, Cambridge Business Park, Cambridge CB4 OHH, United Kingdom
D. J. Gardiner
Centre of Molecular Materials for Photonics and Electronics, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
S. M. Morris
Centre of Molecular Materials for Photonics and Electronics, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
H. J. Coles
Centre of Molecular Materials for Photonics and Electronics, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom
We report measurements of the bulk flexoelectric coefficient (e1 − e3) of 5CB (4-Cyano-4′-pentylbiphenyl), in the temperature range 20–34 °C, with a relative combined standard uncertainty of 2 %. The chiral flexoelectro-optic method was used with 1 wt % high-twisting-power chiral additive. At 25 °C, (e1 − e3) = 7.10 pC/m with a combined standard uncertainty of 0.14 pC/m.
