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. 2019 Nov 28;9(12):1704. doi: 10.3390/nano9121704

Figure 3.

Figure 3

(a) Schematic illustration of the crawling motion generated by the robot. The robot contains two parts: the front body (A) and the legs (B). It takes three steps to crawl for one locomotion. Step I: apply 35 V voltage on B; Step II: apply 35 V voltage on A and turn off the power to B; Step III: turn off the power to A. (b) Snapshots of the wormlike robot crawling. Red arrow shows the moving direction. Step I: B moves forward; Step II: B recovers to straight state and A bends upward; Step III: part A moves forward.