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Proceedings Paper

In-situ monitoring of biologically active solar UV-B radiation: a new biosensor of vitamin D synthetic capacity
Author(s): Irina P. Terenetskaya; I. A. Gvozdovskyy
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Paper Abstract

The new biosensor of vitamin D synthetic capacity of solar/artificial UV-B radiation is based on liquid crystal with provitamin D dopant. Nematic liquid crystals (LC-805, ZLI-1695) are converted into induced cholesteric phase using photosensitive steroid biomolecules of provitamin D3 (7- dehydrocholesterol). During UV exposure remarkable decrease in the number of the Cano-Grandjean stripes has been observed in the wedge-like cell as a result of UV initiated photoisomerization of provitamin D3 that changed helical twisting power of the dopant molecules.

Paper Details

Date Published: 12 June 2001
PDF: 6 pages
Proc. SPIE 4425, Selected Papers from the International Conference on Optoelectronic Information Technologies, (12 June 2001); doi: 10.1117/12.429721
Show Author Affiliations
Irina P. Terenetskaya, Institute of Physics (Ukraine)
I. A. Gvozdovskyy, Institute of Physics (Ukraine)


Published in SPIE Proceedings Vol. 4425:
Selected Papers from the International Conference on Optoelectronic Information Technologies

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