writer：Hu, J.; Nie, Z.; Wang, M.; Liu, Z.; Huang, S.; Yang, H.*
keywords：Liquid Crystal Elastomer
source：期刊
specific source：Angewandte Chemie International Edition, 2023, 62, e202218227
Issue time：2023年
Jump is an important form of motion that enables animals to escape from predators,

increase their range of activities, and better adapt to the environment.

Inspired by springtails, we describe a light-driven soft jumping robot based on

a double-folded liquid crystal elastomer (LCE) ribbon

actuator with a monolithic three-leaf panel fold structure. This robot can

achieve remarkable jumping height, jumping distance, and maximum take-off

velocity, of up to 87 body

length (BL), 65 BL, and 930 BL/s, respectively, under near-infrared light

irradiation. Further, it is possible to control the height, distance, and

direction of jump by changing the size and crease angle of the double-folded

LCE ribbon actuators. These robots can efficiently jump over obstacles

and can jump continuously, even in complex environments. Our simple design strategy

improves the performance of jumping actuators and we expect it to have a wide-ranging

impact on the strength, continuity, and adaptability of future soft robots.