Polarization, transmission, and small-angle scattering of light by a polymer film with elongated droplets of nematic liquid crystal
| Autor: | Valery A. Loiko, M. N. Krakhalev, V. Ya. Zyryanov, A. V. Shabanov, A. V. Konkolovich, Alexander A. Miskevich, O. O. Prishchepa |
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| Rok vydání: | 2019 |
| Předmět: |
Radiation
Materials science 010504 meteorology & atmospheric sciences Scattering Dispersity Physics::Optics Polarization (waves) 01 natural sciences Molecular physics Atomic and Molecular Physics and Optics Physics::Fluid Dynamics Condensed Matter::Soft Condensed Matter Angular aperture Liquid crystal Transmittance Small-angle scattering Refractive index Spectroscopy 0105 earth and related environmental sciences |
| Zdroj: | Journal of Quantitative Spectroscopy and Radiative Transfer. 229:130-144 |
| ISSN: | 0022-4073 |
| DOI: | 10.1016/j.jqsrt.2019.03.006 |
| Popis: | An optical-mechanical model has been developed to describe the transmittance, polarization and small-angle distribution of light scattered by an uniaxially-stretched polymer film containing the elongated ellipsoidal droplets of nematic liquid crystal. It is based on the approximations of Foldy-Twersky, anomalous diffraction, and single scattering. The spectral dependences of transmittances and polarizing abilities of the polymer dispersed liquid crystal films have been analyzed as well as the small-angle intensity distribution and the polarization degree of scattered light depending on the film thicknesses, refractive index of polymer matrix, sizes of droplets, their anisometry parameters, concentration, polydispersity, and optical axes orientation. The optical characteristics of films with homogeneous and inhomogeneous interfacial anchoring at the surface of liquid crystal droplets have been considered. The transmittance and polarizing ability of the films have been studied as functions of the angular aperture of the system recording scattered light. |
| Databáze: | OpenAIRE |
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