Eucalyptus Bark (IMAGE) RMIT University Caption Eucalyptus bark extract has never been used to synthesise graphene sheets before. Credit RMIT University Usage Restrictions Stock image, not for republication. 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.