Effective medium theory of polymer dispersed liquid crystal droplet systems II: partially ordered bipolar droplets


Yu Reshetnyak,, V., Sluckin, T.J. and Cox, S.J. (1997) Effective medium theory of polymer dispersed liquid crystal droplet systems II: partially ordered bipolar droplets. Journal of Physics D: Applied Physics, 30, (23), 3253-3266. (doi:10.1088/0022-3727/30/23/009).

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Description/Abstract

We construct a theory of the dielectric properties of a polymer dispersed liquid crystal droplet film containing bipolar droplets whose principal axes respond to an electric field. The theory involves a balance of an elastic energy term favouring an initial zero-field distribution of droplet axes and a dielectric energy term favouring droplet orientation parallel to an imposed field. We discuss (i) droplets initially orientationally ordered by an in-plane strain field and (ii) an initially random distribution of droplets. In case (i) we find a weakly droplet concentration dependent sharp threshold field at which droplet reorientation occurs. In case (ii) we find more gradual droplet reorientation. In the latter case the droplet axis distribution exhibits an unexpectedly rich structure.

Item Type: Article
ISSNs: 0022-3727 (print)
Related URLs:
Subjects: Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Mathematics > Applied Mathematics
ePrint ID: 29565
Date Deposited: 14 Mar 2007
Last Modified: 27 Mar 2014 18:17
URI: http://eprints.soton.ac.uk/id/eprint/29565

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