A Novel Method for Measuring the Difference in Flexoelectric Coefficients of Nematic Liquid Crystals

Abstract:

Article Preview

The difference between e1 and e3 parameters for flexoelectric polarization, as originally defined byMeyer, is measured for nematic liquid crystal materials E7 and BL087 in Twisted Nematic (TN) cells with In-Plane Switching (IPS) electric fields using the crystal rotation method, which measures transmission as a function of angle of incidence. Values of e1 − e3 for E7 and BL087 are found to be 7.2±1.0 pCm−1 and 9.4±1.0 pCm−1 respectively.

Info:

Periodical:

Solid State Phenomena (Volumes 181-182)

Edited by:

Yuan Ming Huang

Pages:

26-32

Citation:

B. I. Outram and S. J. Elston, "A Novel Method for Measuring the Difference in Flexoelectric Coefficients of Nematic Liquid Crystals", Solid State Phenomena, Vols. 181-182, pp. 26-32, 2012

Online since:

November 2011

Export:

Price:

$38.00

[1] R. Meyer: Phys. Rev. Lett. Vol. 22 (1969), p.319.

[2] J. Patel and R. Meyer: Phys. Rev. Lett. Vol. 58 (1987), p.1538.

[3] I. Dozov, P. Martinot-Lagarde and G. Durand: J. Phys. Lett. Vol. 43 (1982), p.365.

[4] R. Ewings, C. Kischka, L. Parry-Jones et al.: Phys. Rev. E Vol. 73 (2006), p.011713.

[5] E. Tidey, L. Parry-Jones and S. Elston: Liq. Cryst. Vol. 34 (2007), p.251.

[6] A. Smith, C. Brown and N. Mottram: Physical Review E Vol. 75 (2007), p.041704.

[7] B. Outram and S. Elston: Accepted by Liquid Crystals (2011).

[8] D. Berreman: Journal of the Optical Society of America Vol. 62 (1972), p.502.

[9] G. Baur, V. Wittwer and D. Berreman: Physics Letters A Vol. 56 (1976), p.142.

[10] J. Cognard: Gorden & Breach Science Publishers (London & New York, 1982).