Using Light to Alter Light (image) University of Pittsburgh Share Print E-Mail Caption Schematic representation of optical self-trapping within SP-functionalized hydrogels with two remote beams; each beam is switched on and off to control the interaction. Credit Aizenberg/Saravanamuttu Lab. Proceedings of the National Academy of Sciences Feb 2020, 201902872; DOI: 10.1073/pnas.1902872117 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.