Robust yet Self-Healing Multimodal Actuators Enabled by Noncovalent Assembled Nanostructure
writer：Chuansong Yu, Daxin Zhang, Zhuo Huang, Yinggang Miao,* Zhenming Chen,* and Xinxing Zhang*
keywords：flexible actuators, assembled nanostructure, self-healing, multimodal movements, multistage response
source：期刊
Issue time：2025年
In nature, animals can realize multimodal movements such
as walking, climbing, and jumping through transformation in locomotor
gaits or form for survival, which is highly desired for untethered flexible
actuators yet remains challenging. Here, we propose a robust self-healing
multimodal actuator enabled by noncovalent assembled nanostructures
with elaborate regulation of multistage responsive behaviors. Owing to the
dynamic interfacial design between multiple components, the stimulus can
be accurately delivered through a “light-heat-force release” pathway,
endowing the actuator with diverse motion capabilities and desired
jumping ability (27 cm, 34 times body length). Moreover, the reversible
recombination and sliding properties of the noncovalent assembled
dynamic network ensure high toughness (81.9 kJ/mol) and self-healing
efficiency (88.2%), which greatly benefit the long-term service under
complex and demanding scenarios. This study provides a strategy for the design of multimodal flexible actuators to improve their
adaptability and stability in complex environments.