Figure 2 (IMAGE) Osaka University Caption Transmission electron microscope images observed from the reduced graphene oxide films prepared by ethanol treatment at (a) 900ºC and (b) 1100ºC. For the high temperature treatment, the periodic bright spots are observed in the reduced graphene oxide films. This means that the crystallinity of the reduced graphene oxide is efficiently improved by high temperature treatment in ethanol environment. Credit Osaka 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.