A. A. Bogdanov – The Federal State Budgetary Institute “The Nikiforov Russian Center of Emergency and Radiation Medicine”, Saint Petersburg, Russia
S.P. Denisov – Center of Informatics “GAMMA-7″, Moscow, Russia
A. A. Karetnikov – Saint Petersburg State University, Saint Petersburg, Russia
A.P. Kovshik – Saint Petersburg State University, Saint Petersburg, Russia; sashakovshik@yandex.ru
V.P. Romanov – Saint Petersburg State University, Saint Petersburg, Russia
D. Brukkel – Center of Informatics “GAMMA-7″, Moscow, Russia

The article presents the results of an experimental study of the effect of the radiofrequency radiation (RF) of a cell phone on a freely suspended liquid-crystal lm (FSLCF) as a system that simulates biological structures. The selection of the FSLCF model is theoretically substantiated. A polarizing microscope with a video camera was used to visualize the process under study. The reaction of the FSLCF was analyzed using a specially developed software. The responses of the FSLCF were studied for exposure to the RF radiation in the presence of protective device Gamma 7.N-RT and for the action of a static magnetic field of strength 500 Oe. The RF radiation of a cell phone was found to change the orientation structure of the FSLCF, which, after some time, returns to the nearly initial level despite the presence of external eld. The protective device Gamma 7.N-RT attenuates the reaction of the FSLCF. The response of the FSLCF in a static magnetic fi eld remains unchanged during the exposure to the field. These experimental results are evidence that the structure of the freely suspended liquid-crystal lm is a viable model for biological structures, and is capable of adapting to the effect of the RF radiation emitted by a cell phone.

Keywords: biological structures, liquid-crystal lm, electromagnetic elds, orientation structure.

PACS 61.30.-v, 42.25.Lc, 42.70.Df, 41.85.Ct


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