Graphene Oxide Actuator (VIDEO) Penn State This video is under embargo. Please login to access this video. Caption Video shows layered, self-assembled graphene oxide sheets with synthetic proteins patterned on squid ring teeth made into an actuator with substantial curvature. The second segment shows the same device using graphene oxide only. There is no movement. Credit Melik Demirel, Penn State Usage Restrictions Non commercial use only 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.