Smart actuators convert environmental changes into mechanical energy. However, the actuation performance and robustness of smart actuators are limited by the weak interlaminar force and poor adhesion between layers. Herein, we report moisture-responsive actuators integrated with slippery liquid-infused porous surfaces (SLIPSs). The difference in adsorption capacity of water molecules further increases because the SLIPS layer is isolated from air by the lubricating oil film. Compared with the initial (graphene oxide/candle soot, GO/CS) bilayer film, the integrated SLIPS layer improved the bending performance by 12.6% and shortened the response–recovery time by one-third. Moreover, the GO/SLIPS actuator exhibited excellent long-term stability over 10 000 cycles due to the lubricating oil's capillary fluidity. In addition, a moisture-controlled water-transport device based on a GO/SLIPS film was demonstrated.

中文翻译：

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光滑的液体注入多孔表面，用于高性能的湿气响应执行器


智能执行器将环境变化转化为机械能。然而，智能致动器的驱动性能和稳健性受到较弱的层间力和层间附着力差的限制。在本文中，我们报道了与光滑的液体注入多孔表面 （SLIP） 集成的湿度响应致动器。由于 SLIPS 层被润滑油膜与空气隔离，水分子吸附能力的差异进一步增加。与初始（氧化石墨烯/蜡烛烟灰，GO/CS）双层薄膜相比，集成的 SLIPS 层将弯曲性能提高了 12.6%，并将响应恢复时间缩短了三分之一。此外，由于润滑油的毛细管流动性，GO/SLIPS 致动器在 10 000 次循环中表现出优异的长期稳定性。此外，还演示了一种基于 GO/SLIPS 薄膜的水分控制输水装置。