Sodium channels background

Hu and Chao [7] performed two-dimensional numerical simulation on the performance of an electroosmotic pump for planar channels. The model is able to handle the case with the dimensions comparable to the EDL thickness. Also no Debye-Huckle approximation and symmetric conditions are required. But the results show considerable deviation from the experimentally measured ones. Yao and Santiago [8] provided useful review on the historical background of the development of EO pumps. They considered different molar conductivities for cations (A+) and anions (A ) in calculating the electric current caused by electromigration. They predicted that A+ is almost twice A for sodium ions. 

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