Structural elements and fluctuations due to phase separation in adult bovine lenses

Bronislaw Grzegorzewski; Volodymyr M. Rudeychuk

doi:10.1117/12.370445

18 November 1999 Structural elements and fluctuations due to phase separation in adult bovine lenses

Bronislaw Grzegorzewski, Volodymyr M. Rudeychuk

Proceedings Volume 3904, Fourth International Conference on Correlation Optics; (1999) https://doi.org/10.1117/12.370445
Event: International Conference on Correlation Optics, 1999, Chernivsti, Ukraine

Abstract

The nuclear part of adult bovine lens is investigated by means of static light scattering. The analysis of the angular intensity distribution of the scattered light permits to separate two temperature regions where different properties of the scattered light are observed. The hypothesis about the existence of binary liquid phase separation in the cytoplasm of the adult bovine lens is proposed. Accordingly, in the stable state of the cytoplasm the scattering occurs via structure elements of the lens only and the random density fluctuation theory is adopted to evaluate the parameters of the elements. On approach of the spinodal by lowering the temperature fluctuations characteristic for critical ones are deduced. The Orstein- Zernike theory adopted for analysis of these fluctuations shows that the temperature dependence of the respective correlation length is similar to the dependence for binary liquid phase separation. The spinodal temperature is estimated. In the temperature region below the spinodal protein aggregates and spheres polydisperse in size give rise to the scattering.

Citation Download Citation

Bronislaw Grzegorzewski and Volodymyr M. Rudeychuk "Structural elements and fluctuations due to phase separation in adult bovine lenses", Proc. SPIE 3904, Fourth International Conference on Correlation Optics, (18 November 1999); https://doi.org/10.1117/12.370445

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KEYWORDS

Light scattering

Scattering

Lenses

Proteins

Correlation function

Optical spheres

Opacity

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