Insect-inspired flapping-wing micro air vehicles（FMAV） are small in size and with high maneuver.Aiming at problems of structure characteristic and research difficulties of micro actuator

core power device of FMAV

a millimeter-scale electrostatic micro flapping-wing actuator based on electrostatic-actuated principle is designed. Moreover

a series of fabrication and testing methods are also developed. The result of testing shows that the 9 mm in wing span and 3 mg in weight stroke frequency of actuator is 91 Hz

flapping angle is ± 40°

rotating angle is ± 25°and lift force is 1. 5 mg. Lift-to-weight ratio is highly increased compared to previous results. These achievements lead to a new way to realize liftoff of FMAV and lay the foundation for theory and experiment.