piezoelectric polymer (IMAGE) University of California - Riverside Caption An implantable piezoelectric nanofiber polymer membrane delivers precise amounts of drugs under mechanical force. Credit Jin Nam/UCR Usage Restrictions With credit to: Jin Nam/UCR 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.