AUTHOR=Bosia Federico , Krushynska Anastasiia O. , Miniaci Marco , Morvan Bruno , Pugno Nicola M. TITLE=Editorial: Advances in Mechanical Metamaterials JOURNAL=Frontiers in Materials VOLUME=5 YEAR=2018 URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2018.00056 DOI=10.3389/fmats.2018.00056 ISSN=2296-8016