Studies of the surface properties of lipid monolayers as models of biological membranes

 

S. V. Titov ¹, V. S. Malinin ¹, A. S. Titov ², K. D. Kazarinov ¹

¹ Fryazino Branch of Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences,
Vvedensky Sq.1, Fryazino Moscow region 141190, Russia

² Moscow Institute of Physics and Technology (State University),
 9 Institutskiy per., Dolgoprudny, Moscow Region, 141701, Russian Federation

 

The paper is received on October 9, 2018

 

Abstract. A method of investigation of the surface properties of lipid monolayers for the study of microwave biological effects is developed. The solution of the Navier-Stokes equation, describing the propagation of surface waves of a liquid as applied to lipid monolayers, permits the determination of the surface tension and viscosity of a monolayer as a function of the excitation frequency, the wave vector and the attenuation coefficient of the surface wave. The analysis of the effect of lipid monolayers on the propagation of surface waves is presented. It is shown that the presence of a lipid film on the surface of a liquid changes the wavelength of capillary waves and the attenuation coefficient for a fixed excitation frequency. One advantage of the method is that an ac electric field is used to generate surface waves which when combined with optical measurement renders this technique absolutely contact free. The results so obtained can serve as a basis for subsequent experiments applying electrostriction generation of capillary waves to the study of the surface properties of lipid monolayers as affected by microwave radiation.

Key words: biological effects of microwave radiation, generation of surface waves, surfactants, lipid monolayers, models of biological membranes, wavelength and attenuation of surface waves, Navier-Stokes equation.

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For citation:

S. V. Titov, V. S. Malinin, A. S. Titov, K. D. Kazarinov. Studies of the surface properties of lipid monolayers as models of biological membranes. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No. 10. Available at http://jre.cplire.ru/jre/oct18/13/text.pdf

DOI  10.30898/1684-1719.2018.10.13