Fig.2 (IMAGE) Osaka University Caption Device structure (left) and schematic of current density-voltage (JV) characteristics.This figure is reproduced from the original paper (Figure1a). Credit Ryosuke Nishikubo Usage Restrictions Credit must be given to the creator. 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.