Polyphase electromagnetic coils (IMAGE) DOE/Oak Ridge National Laboratory Caption ORNL has licensed its high-powered wireless vehicle charging technology to HEVO, including the lab’s unique, compact polyphase electromagnetic coils that provide the highest surface power density available. Credit Carlos Jones, Oak Ridge National Laboratory/U.S. Dept. of Energy Usage Restrictions Please give photo credit when using. License Original 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.