Metatronic Circuit Wired in Series (IMAGE) University of Pennsylvania Caption When the plane of the electric field crosses both the nanorods and the gaps, the circuit is wired in series. Credit University of Pennsylvania Usage Restrictions None 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.