AUTHOR=Fraga Mariana Amorim , Pessoa Rodrigo Savio , Ali Ghulam TITLE=Editorial: Nanofilms and Nanostructures for Energy Applications JOURNAL=Frontiers in Mechanical Engineering VOLUME=6 YEAR=2021 URL=https://www.frontiersin.org/journals/mechanical-engineering/articles/10.3389/fmech.2020.625981 DOI=10.3389/fmech.2020.625981 ISSN=2297-3079