https://viterbischool.usc.edu/news/2023/04/materials-of-the-future-ill-have-my-nano-sized-donuts-with-extra-swirls/20230405_yts_figure_natcomm_story68-read-only/
20230405_yts_Figure_NatComm_story[68] - Read-Only - USC Viterbi | School of Engineering
Apr 13, 2023 - Donut shaped skyrmions (left) show polarization swirls in one direction, while half-donut-shaped merons (right) are able to swirl in multiple directions....