Hostname: page-component-77c89778f8-m8s7h Total loading time: 0 Render date: 2024-07-19T03:26:00.978Z Has data issue: false hasContentIssue false
  • English
  • Français

A Study of Liquid Crystalline Elastomers as Piezoelectric Devices©

Published online by Cambridge University Press:  10 February 2011

A. G. Biggs ,
K. M. Blackwood ,
A. Bowles ,
S. Dailey  and
Alison May
A. G. Biggs
Affiliation:
DERA Malvern, St Andrews Road, Malvern, Worcestershire, WR14 3PS, UK.
K. M. Blackwood
Affiliation:
DERA Malvern, St Andrews Road, Malvern, Worcestershire, WR14 3PS, UK.
A. Bowles
Affiliation:
DERA Farnborough, Ively Road, Farnborough, Hampshire, GU14 OLX, UK.
S. Dailey
Affiliation:
DERA Malvern, St Andrews Road, Malvern, Worcestershire, WR14 3PS, UK.
Alison May
Affiliation:
Merck R&D UK, Building 35, University of Southampton, Southampton, S017 1BJ, UK.kmnblackwood@dera.gov.uk
Get access

Abstract

Ferroelectric liquid crystalline polymer films exhibit a number of unique physical properties and have been extensively studied during the last few years. Ferroelectric polymer films exhibiting a high level of piezoelectric activity would provide a new route to piezo- and pyro-electric sensors.

We report the fabrication of free-standing ferroelectric liquid crystal films which exhibit piezoelectric coefficients up to 4.4pC/N. We also report the investigation of the physical properties of these films by dynamic mechanical analysis.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 600: Symposium FF – Electroactive Polymers , 1999 , 159
Copyright
Copyright © Materials Research Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

©

British Crown Copyright 1999. Published with the permission of the Defence Evaluation and Research Agency on behalf of the Controller of HMSO

References

[1] Meyer, R.B. et al. ; Fifth International LC Conf., Stockholm, (1974):Google Scholar
Meyer, R.B., Liebert, L., Strzelecki, L., and Keller, P., Mol. Cryst. Liq. Cryst., 38, L–69, (1975).Google Scholar
[2] Clark, N.A., and Lagerwall, S.T., Appl. Phys. Lett. 36, p. 899 (1980)Google Scholar
[3] Shibaev, V., Kozlovsky, M., Beresnev, L., Blinov, L., A. Platé, Polym. Bull. 12, p. 299 (1984)Google Scholar
[4] Uchida, S., Morita, K., Miyoshi, K., Hashimoto, K., Kawasaki, K., Mol. Cryst. Liq. Cryst. 155, p. 93 (1988)Google Scholar
[5] See for example: "Side Chain Liquid Crystal Polymers", ed. McArdle, C.B., Blackie, Glasgow, (1989). And references thereinGoogle Scholar
[6] Tressler, J.F., Alkoy, S., Newnham, R.E., Journal of Electroceramics 2 p. 257 (1998)Google Scholar
[7] Kepler, R.G., Anderson, R.A., J. Appl. Phys. 49 p. 4490 (1978)Google Scholar
[8] Dias, C.J., D.K. Das-Gupta, Ferroelectric Polymers and Ceramic-Polymer Composites 92 p. 217 (1994)Google Scholar
[9] Ebbutt, J., Richardson, R.M., Blackmore, J., McDonnell, D.G., Verrall, M., Mol. Cryst. Liq. Cryst. 261 p.549 (1995)Google Scholar
[10] Sage, I.C., McDonnell, D.G., Lymer, K.P., Blackwood, K.M., Blackmore, J.M., Coates, D., Beattie, D.R., Verrall, M., Goodby, J.W., Watson, M., Conference Proceedings, FLC'95, Cambridge, UK, (1995).Google Scholar
[11] Blackwood, K.M., Sabral, R., Jones, M., Das-Gupta, D.K., J. Phys. D: Cond. Matter, In PressGoogle Scholar
[12] Blackwood, K.M., Pethrick, R.A., Simpson, F.I., Day, R.E. and Watson, C.L.; J. Mat. Sci., 30, 4435, (1995).Google Scholar