Snapshots (IMAGE) American Institute of Physics Caption Snapshots for the distribution of ions near a negatively charged planar surface at different dielectric contrasts. Credit Jianzhong Wu, University of California, Riverside Usage Restrictions This image may be used only with appropriate 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.