Moisture-responsive actuators are widely used as energy-harvesting devices due to their excellent ability to spontaneously and continuously convert external energy into kinetic energy.However,it remains a challenge to...Moisture-responsive actuators are widely used as energy-harvesting devices due to their excellent ability to spontaneously and continuously convert external energy into kinetic energy.However,it remains a challenge to sustainably synthesize moisture-driven actuators.Here,we present a sustainable zero-waste emission methodology to prepare soft actuators using carbon nano-powders and biodegradable polymers through a water evaporation method.Due to the water solubility and recyclability of the matrixes employed here,the entire synthetic process achieves zero-waste emission.Our composite films featured strong figures of merit and capabilities with a 250◦maximum bending angle under 90%relative humidity.Programmable motions and intelligent bionic applications,including walkers,smart switches,robotic arms,flexible excavators,and hand-shaped actuators,were further achieved by modulating the geometry of the actuators.This sustainable method for actuators’fabrication has great potential in large-scale productions and applications due to its advantages of zero-waste emission manufacturing,excellent recyclability,inherent adaptive integration,and low cost.展开更多
基金Royal Society Research Grant,Grant/Award Number:RGS\R1\201071QMUL-CSC(China Scholarship Council)。
文摘Moisture-responsive actuators are widely used as energy-harvesting devices due to their excellent ability to spontaneously and continuously convert external energy into kinetic energy.However,it remains a challenge to sustainably synthesize moisture-driven actuators.Here,we present a sustainable zero-waste emission methodology to prepare soft actuators using carbon nano-powders and biodegradable polymers through a water evaporation method.Due to the water solubility and recyclability of the matrixes employed here,the entire synthetic process achieves zero-waste emission.Our composite films featured strong figures of merit and capabilities with a 250◦maximum bending angle under 90%relative humidity.Programmable motions and intelligent bionic applications,including walkers,smart switches,robotic arms,flexible excavators,and hand-shaped actuators,were further achieved by modulating the geometry of the actuators.This sustainable method for actuators’fabrication has great potential in large-scale productions and applications due to its advantages of zero-waste emission manufacturing,excellent recyclability,inherent adaptive integration,and low cost.
