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Proceedings Paper

Nonlinear optical properties of biomolecules and biocrystals under weak electromagnetic field
Author(s): Galina I. Dovbeshko; Leonid I. Berezhinsky; Mikhail P. Lisitsa; Grigory Sergeevich Litvinov
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Paper Abstract

Nonthennal effects of millimeter wave (MMW) radiation upon the vibrational spectra parameters of o.-Gly, 13-Ala, DL­ Trp, L-Tyr, L-His aminoacids and AMP nucleotide are presented. MMW induced intensity changes up to 35% in IR absorption spectra of Trp, Tyr and AMP films were discovered. Irradiation effect was observed in a number of bands corresponding to different chemical bonds and forms of vibrations Resonance character of MMW effect was regarded as its distinctive feature. In IR reflection spectra of o.-Gly, 13-Ala, L-His single crystals the band structure changes were found together with the intensity redistribution. The MMW action had a resonance nature which appeared to be more pronounced for NH;and coo· deformational vibrations. The amplitude of changes approached 55% of initial intensity. It was shown that specimens' temperature did not vary (accurate to 0,5° C) in the process of irradiation. Heating up to 320 K resulted only in well known temperature effects upon IR bands, that differs essentially from the non-thermal MMW action observed.

Paper Details

Date Published: 1 May 1993
PDF: 6 pages
Proc. SPIE 1890, Biomolecular Spectroscopy III, (1 May 1993); doi: 10.1117/12.145252
Show Author Affiliations
Galina I. Dovbeshko, Scientific Research Ctr. Vidhuk (Ukraine)
Leonid I. Berezhinsky, Scientific Research Ctr. Vidhuk (Ukraine)
Mikhail P. Lisitsa, Scientific Research Ctr. Vidhuk (Ukraine)
Grigory Sergeevich Litvinov, Scientific Research Ctr. Vidhuk (Ukraine)

Published in SPIE Proceedings Vol. 1890:
Biomolecular Spectroscopy III
Laurence A. Nafie; Henry H. Mantsch, Editor(s)

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