Optoelectronic Microrobot (IMAGE) University of Toronto Caption Scanning electron microscopy image of a 'cogwheel-shaped' optoelectronic microrobot. A mammalian cell or another sub-mm payload is scooped up into the central chamber of the robot, which is then manipulated away from the bulk suspension for analysis. Credit Shuailong Zhang 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.