IFLYSIB   05383
INSTITUTO DE FISICA DE LIQUIDOS Y SISTEMAS BIOLOGICOS
Unidad Ejecutora - UE
artículos
Título:
Electrodynamics of Interactions in Electrolyte Media. Possible Consequences in Biological Functions
Autor/es:
J.R. DE XAMMAR ORO, G. RUDERMAN AND J.R. GRIGERA
Revista:
Biophysics
Editorial:
Nauka-Springer
Referencias:
Año: 2008 p. 195 - 198
Resumen:
Attention is drawn on the fact that electric charge interactions inside aqueous electrolyte solutions, such as physiological media, depend not only on the distance of the interacting charges but also on the frequency at which they move. This fact has important consequences for some biological processes, particularly for the kinetic ones. The treatment of charges screening, including the dynamical effects, shows that even above Debye┬┤s length electrical interactions in physiological like systems are effective, provided that charges move at frequencies higher than about 250MHz.For each electrolyte solution, it is possible to define a threshold frequency, the Maxwell s frequency, which point the crossover between a conducting and dielectric regime inside the solution. Keywords: biological interactions; molecular interactions; electrical interactions; electrical screening; conductivity; permittivity.