Closeup of a 'smarticle' (IMAGE) U.S. Army Research Laboratory Caption Closeup of a "smarticle" -- smart active particle -- showing the two 3D-printed arms, light sensor and motor. Credit Rob Felt, Georgia Tech 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.