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. Active Materials and Smart Living Laboratory Department of Mechanical Engineering University of Nevada Las Vegas (UNLV) Las Vegas NV 89154 USA