1. National Creative Research Initiative for Functionally Antagonistic Nano‐Engineering Department of Mechanical Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak‐ro, Yuseong‐gu Daejeon 34141 Republic of Korea
2. Department of Mechanical and Production Engineering Aarhus University Nordre Ringgade 1 Aarhus C 8000 Denmark
3. Department of Mechanical Engineering Georgia Institute of Technology North Avenue Atlanta GA 30332 USA