This project was a combined fabrication, experimental, and modeling effort to predict transport properties of micro and nanochannels. In this work, the governing equations for electrokinetic flow are solved for not only monovalent binary electrolytes, but also multi-component electrolytic systems containing multivalent ion species. For channel-reservoir systems, the wall concentrations of different ion species are obtained using electrochemical equilibrium consideration. For channel materials with known surface charge density, the results ...