Light Hits a Smarticle (Smart Active Particle) Causing It to Stop Moving, while the Other Smarticles (image) U.S. Army Research Laboratory Share Print E-Mail Caption Light hits a smarticle (smart active particle) causing it to stop moving, while the other smarticles continue to flap their arms. The resulting interactions produce movement toward the stopped smarticle, providing control that doesn't depend on computer algorithms. Credit Rob Felt, Georgia Tech Usage Restrictions None Share Print E-Mail 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.