A Fast-Moving Micro Crawling Robot with Direct Electromagnetic Driving Mechanism

We present a fast-moving micro crawling robot driven directly by electromagnetically induced resonance for the first time. The forelegs of the crawling robot are glued to the resonating beams and can achieve periodical raise and recover motions to realize forward movement. Under an applied AC voltage of 4 V, the crawling robot with a total mass of 137 mg can achieve a maximum crawling speed of 232 mm/s (18.9 body lengths per second). As such, this work presents a new efficient direct driving scheme for the legged micro crawling robots.