The simulation and experimental study on laser driven micro-robot

Harvesting energy from light allows for convenient wireless actuation strategies for micro-robots. Conventional optical driving methods for micron scale robots still have some limitations, such as the slow driving speed, or poor maneuverability, etc. In order to improve the performance of the laser driven micro-robot, a micro-robot fabricated by PCL/Fe
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was heated and driven by laser directly, realizing the movement of the micro-robot by the thermal convection. Due to the photothermal properties of the nanoparticles used in the preparation of micro-robots, the micro-robots have the advantages of fast driving speed and strong maneuverability. In this paper, firstly, the advantages and types of optical driving are introduced. Secondly, the photothermal properties of nanoparticles are analyzed by simulation and experiments, and the influence of laser power on the driving is also studied. Finally, the application prospect of optical driving in the field of biomedical engineering is summarized and prospected.