Abstract

Filled nernatics consist ofsilica colloidal particles ofdiameter lOOA in a nematic liquid crystal (LC) suspension. Theparticles perturb the local nematic texture that results in a strong light scattering on the inhomogeneities of director field [1].The contribution ofthe particles themselves to the light scattering is small due to their small relative volume and thus can beneglected. As the external permanent electric field is correspondingly switched on the director field distortions decrease thatleads to the decrease of light scattering and thus to the increase of transparency of the nematic cell. Due to this effect thefilled LC are very perspective for applications in displays and other optoelectronic devices [2].In this paper we present results of theoretical study of light scattering cross sections in nematic LC filled with smallspherical and cylindrical colloidal inclusions. We suppose that multiple scattering can be ignored and that the only manyscatterer effects are due to the particle position correlations.In section 2 we consider the light scattering cross sections in filled LC in Rayleigh-Gans approximation [3]

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