摘要
Smart actuators have a wide range of applications in bionics and energy conversion.The ability to reconfigure shape is essential for soft actuators to achieve various shapes and deformations,which is a crucial feature for next-generation actuators.Nonetheless,it is still an enormous challenge to establish a straightforward approach to creating programmable and reconfigurable actuators.MXene-cellulose nanofiber composite film(MCCF)with a brick-and-mortar hierarchical structure was produced through a vacuum filtration process.MCCF demonstrates impressive mechanical properties such as a tensile stress of 68 MPa and a Young’s modulus of 4.65 GPa.Besides,the MCCF highlights its potential for water-assisted shaping/welding due to the abundance of hydrogen bonds between MXene and cellulose nanofibers.MCCF also showcases capabilities as a humiditydriven actuator with a rapid response rate of 550°·s^(−1).Using the methods of water-assisted shaping/welding,several bionic actuators(such as flower,butterfly,and muscle)based on MCCF were designed,highlighting their versatility in applications of smart actuators.The research showcases the impressive capabilities of MXene-based actuators and offers beneficial insights for the advancement of future intelligent materials.
基金
supported by the National Natural Science Foundation of China(Nos.52103138 and 52201043)
the Natural Science Foundation of Fujian Province(Nos.2023J01159 and 2022J01945)
Starting Research Fund from Fujian University of Technology(No.GY-Z220199)
the Fuzhou City Science and Technology Cooperation Project(Nos.2021-S-091 and 2022-R-003).
