Electrodynamics of interactions in electrolyte media. Possible consequences in biological functions |
| |
Authors: | J R de Xammar Oro G Ruderman J R Grigera |
| |
Institution: | (1) Instituto de Fisica de Liquidos y Sistemas Biologicos (IFLYSIB), CONICET-CIC-UNLP, CC 565, B1900BTE La Plata, Argentina |
| |
Abstract: | Attention is drawn to the fact that electric charge interactions in aqueous electrolyte solutions, such as physiological media, depend not only on the distance between the interacting charges but also on the frequency at which they move. This fact has important consequences for some biological processes, particularly the kinetic ones. Consideration of charge screening, including the dynamic effects, shows that electrical interactions in quasi-physiological systems are effective even above Debye’s length, provided that charges move at frequencies higher than ~250 MHz. For each electrolyte solution, it is possible to define a threshold frequency, the Maxwell frequency, as the point of crossover between a conducting and a dielectric regime in the solution. |
| |
Keywords: | biological interactions molecular interactions electrical interactions electrical screening conductivity permittivity |
本文献已被 SpringerLink 等数据库收录! |
|