Microrobot On a Penny (IMAGE) Purdue University Caption The microrobot can be seen just to the right of the "U" in United States on this U.S. penny. Credit Purdue University image/Georges Adam 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.