Effective Medium Theory of Polymer Dispersed Liquid Crystal Droplet Systems II: Partially Oriented Bipolar Droplets
RESHETNYAK, V.Yu., SLUCKIN, T.J. and COX, S.J. (1997) Effective Medium Theory of Polymer Dispersed Liquid Crystal Droplet Systems II: Partially Oriented Bipolar Droplets. J. Phys. D: Appl. Phys., 30, (23), 3253-3266.
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.
|Divisions:||Faculty of Physical Sciences and Engineering > Electronics and Computer Science
|Date Deposited:||08 Oct 1999|
|Last Modified:||02 Mar 2012 12:57|
|Contributors:||RESHETNYAK, V.Yu. (Author)
SLUCKIN, T.J. (Author)
COX, S.J. (Author)
|Further Information:||Google Scholar|
|ISI Citation Count:||19|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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