AUTHOR=Ma Fuyin TITLE=Editorial: Acoustic and mechanical metamaterials for various applications - volume II JOURNAL=Frontiers in Materials VOLUME=10 YEAR=2023 URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2023.1342908 DOI=10.3389/fmats.2023.1342908 ISSN=2296-8016