Two equations of the transmembrane potential on a cell in suspensions exposed to external fields at frequency between 10KHz and 100 MHz

Since the famous Schwan equation was derived under the condition of ignoring the capacitive properties, the first order-model analytical solution derived by Schwan equation, is no longer suitable for calculating the transmembrane potential on a cell in suspensions exposed to an external field at frequency below 10KHz. For the reason is that capacitive property of the cytoplasm and the external medium become increasingly important and thus must not be ignored with increasing alternating field frequency. In this paper, based on Maxwell-Wagner and Bruggeman-Han aianalytical solutions, two equations of the transmembrane potential on a cell in suspensions exposed to external fields at frequency between 10KHz and 100MHz was built for low and high cell concentrations, respectively. © 2008 IEEE.