Smallest Superconductor (IMAGE) Ohio University Caption This image shows the smallest superconductor, which is only .87 nanometer wide. Credit Image courtesy of Saw‑Wai Hla and Kendal Clark, Ohio University. 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.