Underwater motion of PNIPAM-PEGDA bilayer miniature robot driven by photo-magnetics

Robots have a profound impact on human production and life, which have been developed by leaps and bounds in recent decades. As the higher and higher requirements for operations in complex environments, researchers continue to develop wireless driven miniature robots. In this paper, the ratio and deformation properties of PNIPAM and PEGDA hydrogels were researched, and the microcrawls and microgrippers with 3D structure were prepared through secondary curing technology. They have light stimulus response and magnetic response characteristics, and can be reversibly transformed from 3D to 2D structure to complete crawling and transportation functions. This research offers a reference for the fabrication and programmable actuation of intelligent materials. It holds certain promise in the domains of transportation and bionics.