Microscope Images (IMAGE) DOE/Ames National Laboratory Caption The above terahertz SNOM image shows electrical field concentration (the brighter color) and asymmetry (the bright vs dark color on two sides), indicating a connectivity issue. The below transmission electron microscopy image confirms the disconnect in the junction (the spatial gap). Credit U.S. Department of Energy Ames National Laboratory Usage Restrictions Credit to U.S. Department of Energy Ames National Laboratory License Original 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.