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- W2000840843 abstract "Polarized and depolarized light scattering measurements have been performed from a nematic liquid crystalline material in the isotropic region, approaching the nematic phase transition. A critical static scattering intensity and a critical slowing-down of the orientational fluctuations were observed in a temperature range of about 10 o C above the phase transition which followed a (T-T c *-γ dependence, but with an exponent slightly smaller than unity. The angular dependence of the polarized static scattering intensity differed in behaviour from other liquid crystals by the occurrence of a strong excess scattering at small scattering angles. These observations give evidence for spatial structural heterogeneities, spherical in shape and optically isotropic, in a bath of a nematic liquid crystalline system. This conclusion is confirmed by dynamic light scattering where in addition a slow mode appeared in the time correlation function which results from random migration of these heterogeneities" @default.
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- W2000840843 date "1994-09-01" @default.
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- W2000840843 title "Pretransitional behaviour of a nematic liquid crystal in the isotropic phase" @default.
- W2000840843 doi "https://doi.org/10.1051/jp2:1994102" @default.
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