Superhydrophobic Photothermal Paper Based on Ultralong Hydroxyapatite Nanowires for Controllable Light-Driven Self-Propelled Motion

Stimulus-responsive actuators that can respond to the external stimuli and convert external energy into dynamic movement behaviors are highly desired for many applications. Among various driving schemes, the Marangoni propulsion produced by the photothermal effect is promising for yielding stimulus-responsive motion in a contactless and switchable manner. However, challenges still remain, especially for the fluid drag and poor processability....