Affiliation:
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
Abstract
AbstractThe advancement in smart devices and soft robotics necessitates the use of multiresponsive soft actuators with high actuation stroke and stable reversibility for their use in real‐world applications. Here, this work reports a magnetically and electrically dual responsive soft actuator based on neodymium and iron bimetallic organic frameworks (NdFeMOFs@700). The ferromagnetic NdFeMOFs@700 exhibits a porous carbon structure with excellent magnetization saturation (166.96 emu g−1) which allows its application to a dual functional material in both magnetoactive and electro‐ionic actuations. The electro‐ionic soft actuator, which is fabricated using NdFeMOFs@700 and PEDOT‐PSS, demonstrates 4.5 times higher ionic charge storage capacity (68.21 mF cm−2) and has excellent cycle stability compared with the PEDOT‐PSS based actuator. Under a low sinusoidal input voltage of 1 V, the dual‐responsive actuator displays bending displacement of 15.46 mm and also generates deflection of 10 mm at 50 mT. Present results show that the ferromagnetic bimetallic organic frameworks can open a new way to make dual responsive soft actuators due to the hierarchically porous structures with its high redox activity, superior magnetic properties, and larger electrochemical capacitance. With the NdFeMOFs@700 based soft actuators, walking movement of a starfish robot is demonstrated by applying both the magnetic and electric fields.
Funder
National Research Foundation of Korea
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
6 articles.
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