A multiple stimuli‐responsive actuator with an ability of rapid and sensitive responding is highly desirable for the development of biomimetic actuation applications. Herein, a bilayer actuator with fast and sensitive responses to acetone vapor and light stimuli is reported based on polyvinylidene fluoride (PVDF) membrane with a hierarchical porosity and macroscopic carbon nanotubes (CNTs) assembled film. The CNTs film with uniform and tunable thickness is prepared by a macroscopic interfacial assembly strategy and transferred integrally onto the PVDF membrane. Under the infrared light, this CNTs/PVDF bilayer actuator can bend rapidly within 1 s and generate large stress. Moreover, for the acetone vapor stimuli, the actuator bends within 0.19 s and also reverses in 1.24 s to the initial state, showing sensitive and fast responses to acetone stimuli, as well as outstanding stability and repeatability.

中文翻译：

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对光和有机溶剂蒸气刺激具有快速响应的CNTs / PVDF双层执行器的界面制备

具有快速和灵敏响应能力的多重刺激响应执行器对于仿生驱动应用的开发是非常需要的。本文中，基于具有分级孔隙率的聚偏二氟乙烯（PVDF）膜和宏观碳纳米管（CNT）组装膜，报道了对丙酮蒸气和光刺激具有快速和敏感响应的双层致动器。通过宏观界面组装策略制备厚度均匀且可调的CNTs膜，然后将其整体转移到PVDF膜上。在红外光下，这种CNTs / PVDF双层执行器可以在1 s内快速弯曲并产生很大的应力。此外，对于丙酮蒸气刺激，执行器在0.19 s内弯曲，并在1.24 s内反转至初始状态，