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Article

Model to describe light scattering by polymer film containing droplets with inhomogeneous anchoring of liquid crystal molecules at the polymer–droplet interface: asymmetry effect in the angular distribution of light

, , , , , & show all
Pages 1415-1427 | Received 12 Nov 2018, Accepted 18 Jan 2019, Published online: 07 Mar 2019
 

ABSTRACT

A model to describe light scattering by polymer film containing of monolayer of liquid crystal droplets with inhomogeneous anchoring of liquid crystal molecules at the polymer-droplet interface is developed. It is based on the interference approximation of the wave scattering theory. The director field distribution in the droplet volume is determined by solving the free energy density minimization problem using the relaxation method. The spatial distribution of droplets in the layer is described by the hard disks model. The amplitude scattering matrices of individual droplets are found in the anomalous diffraction approximation. The algorithm for numerical analysis of the characteristics of light scattered in a polymer film containing droplets at homogeneous and inhomogeneous surface anchoring is described in terms of the partial filling factors of the monolayer film. Electrically controllable symmetry breaking effect of angular distribution of light scattered by films containing droplets with inhomogeneous anchoring at the polymer-droplet interface is described and experimentally confirmed.

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Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The work was performed in the framework of an agreement on inter-academic cooperation between the National Academy of Sciences of Belarus and the SB RAS. It is supported by the Belarusian Republican Foundation for Fundamental Research (Project No. F18RA-003). MN Krakhalev thanks the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory and the Krasnoyarsk Regional Science Foundation (grant No. 18-42-243006).

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