Negative Capacitance (IMAGE) University of California - Berkeley Caption Shown is a rendition of an experimental stack made with a layer of lead zirconate titanate, a ferroelectric material. UC Berkeley researchers showed that this configuration could amplify the charge in the layer of strontium titanate for a given voltage, a phenomenon known as negative capacitance. Credit Asif Khan, UC Berkeley Usage Restrictions Non-commercial use allowed with credit. 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.