Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1103/PhysRevE.98.022404

Аннотация: There is rapidly increasing evidence that nanoscale temperature heterogeneities are involved in important biological processes. Combining nanoheating and nanoscale thermosensors forms the basis of emerging unique methods of cell therapy, tissue engineering, and regenerative medicine. Understanding corresponding phenomena seems to require a mesoscopic nonequilibrium hydrodynamic theory. In this paper, a Langevin-type model of dynamics of phonon modes propagating along a bilayer lipid membrane in the presence of an in-plane temperature gradient is proposed. Corresponding quantitative estimates for the Brillouin components of the nonequilibrium dynamic structure factor and the equal-time longitudinal momentum-density correlation function for a lipid bilayer are obtained. The analysis reveals that for typical values of parameters of lipid bilayer, the longitudinal temperature gradient of the order of 5qK for wave numbers q from 0.01 to 1nm-1 induces significant asymmetry of the Brillouin components of the dynamic structure factor and long-range spatial correlations in the plane of the bilayer. The corresponding membrane temperature gradients seem to be typical or achievable for cellular processes responsible for intracellular temperature variations and such external physical impacts as high-intensity electromagnetic pulses or heating of membrane-associated nanoparticles. © 2018 American Physical Society.

Журнал: Physical Review E

Выпуск журнала: Vol. 98, Is. 2

Номера страниц: 22404

ISSN журнала: 24700045

Издатель: American Physical Society

• Zakhvataev V.E. (Federal Research Center, Krasnoyarsk Scientific Center of the Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation; Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)

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