Molecular Paddlewheels (IMAGE) Duke University Caption Illustration showing the atomic structure of solid-electrolyte Na3PS4 with channels for Na+ ions (purple) between PS43- polyanions (orange). The black arrows denote the coupled motions of traveling sodium ions with the group vibrations of the host structure, involving twists of tetrahedral polyanions similar to that of a paddlewheel. Credit Olivier Delaire, Duke University Usage Restrictions None 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.