AUTHOR=Liao Zhen , Xu Kai-Da TITLE=Editorial: Plasmonic metamaterials and electromagnetic devices volume 2 JOURNAL=Frontiers in Physics VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2022.1039281 DOI=10.3389/fphy.2022.1039281 ISSN=2296-424X