3-D-Printed Microfish (IMAGE) University of California - San Diego Caption 3-D-printed microfish contain functional nanoparticles that enable them to be self-propelled, chemically powered and magnetically steered. The microfish are also capable of removing and sensing toxins. Credit J. Warner, UC San Diego Jacobs School of Engineering. Usage Restrictions Please credit J. Warner, UC San Diego Jacobs School of Engineering. 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.