Conductivity and semiconductor parameters of biological membranes

The tunnel nature of transmembrane current is proved in article and ideas of mechanisms of this current are summarized. The calculation of the parameters characterizing conductivity of membranes, in particular, kinetics of electronic transitions, specific conductivity, mobility and the concentration of carriers allows to consider a biological membrane as the equivalent semiconductor. For the analysis of an electrical conductivity the semi-classical description of the mechanism of electrons exchange in reversible chemical reaction, and then semi-classical Gaussian approximation for locally donor-acceptor couple of electronic carriers organized in a membrane is used. It allows to calculate the size of transmembrane current, and then specific conductivity and the equivalent concentration of carriers. The hoping mobility of the delocalized conduction electron is calculated proceeding from value of probability of electronic transfer, defined activation energy. The material of this article is directed, in particular, to a problem of development and research of biotechnical devices on the basis of the natural and synthesized biological membranes.