Polarization Lines Pastel (IMAGE) DOE/Argonne National Laboratory Caption Image depicts some of the polarization lines within a ferroelectric nanoparticle. The lines intertwine into a Hopfion topological structure. Credit Image by Yuri Tikhonov, University of Picardie and Russia’s Southern Federal University, and Anna Razumnaya, Southern Federal University 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.