atomic-scale ion transistor (IMAGE) The University of Hong Kong Caption Schematic of the atomic-scale ion transistor made of graphene channels of 3 angstrom size. The electric potential is applied to mimic the electric charge on the walls of biological channels and enables ion intercalation and permeable ion transport beyond a percolation threshold. Credit Yahui Xue Usage Restrictions None 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.