Figure 2: Diagram of the membrane (IMAGE) Kobe University Caption Water permeation is induced by the nanochannels. It is difficult for the ions to enter the nanochannels, so they cannot permeate the membrane easily. Credit Membrane Engineering Group, Kobe University. Usage Restrictions Please credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.