No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The limits of flexoelectricity in liquid crystals
1. P.-G. de Gennes and J. Prost, The Physics of Liquid Crystals (Oxford University Press, Oxford, 1993).
4. G. P. Bryan-Brown, C. V. Brown, and J. C. Jones, U.S. Patent No. 6249332 (2001).
5. H. J. Coles, M. J. Coles, B. J. Broughton, and S. M. Morris, Patent No. WO/2006/003441 (2006).
11. G. Carbone, P. Salter, S. J. Elston, P. Raynes, L. D. Sio, S. Ferjani, G. Strangi, C. Umeton, and R. Bartolino, Appl. Phys. Lett. 95, 011102 (2009).
14. A. I. Jakli, J. E. Harden, S. Sprunt, and J. T. Gleeson, U.S. Patent No. 0182026 (2010).
22. P. Kumar, Y. G. Marinov, H. P. Hinov, U. S. Hiremath, C. V. Yelamaggad, K. S. Krishnamurthy, and A. G. Petrov, J. Phys. Chem. B 113, 9168 (2009).
25.As for solid piezoelectrics (see, e.g., Ref. 30), the electrical condition of an elastic coefficient must be specified when flexoelectricity is taken into account (see, e.g., Refs. 15 and 31). Similarly, the mechanical conditions of a dielectric coefficient must be specified (see, e.g., Refs. 19 and 30 and 32).
26. A. G. Petrov, Physical Properties of Liquid Crystals: Nematics (INSPEC, London, 1998) pp. 251–264.
28. P. Salter, A. Lehmann, C. Tschierske, S. Elston, and P. Raynes, “Bent core nematic flexoelectricity,” Presented at the 24th British Liquid Crystal Society Annual Conference, University of Hull, 2010 (unpublished).
30. W. G. Cady, Piezoelectricity (McGraw-Hill, York, PA, 1946) p. 262.
31. S. A. Pikin, Structural Transformations in Liquid Crystals (OPA, Amsterdam, 1991) p. 157.
Article metrics loading...
The flexoelectric conversion of mechanical to electrical energy in nematic liquid crystals is investigated using continuum theory. Since the electrical energy produced cannot exceed the mechanical energy supplied, and vice-versa, upper bounds are imposed on the magnitudes of the flexoelectric coefficients in terms of the elastic and dielectric coefficients. For conventional values of the elastic and dielectric coefficients, it is shown that the flexoelectric coefficients may not be larger than a few tens of pC/m. This has important consequences for the future use of such flexoelectric materials in devices and the related energetics of distorted equilibrium structures.
Full text loading...
Most read this month