Hydrogels (image) University of California - San Diego Caption UC San Diego bioengineers have developed smart, self-healing hydrogels with far-reaching applications including medial sutures, targeted drug delivery, industrial sealants and self-healing plastics. Credit Joshua Knoff, UC San Diego Jacobs School of Engineering. Usage Restrictions with photo credit 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.