Motion simulation of a flexible microrobot actuated by acoustic waves Online publication date: Wed, 07-Feb-2024
by Bendong Liu; Shaohua Zhang; Meimei Qiao; Jiahui Yang
International Journal of Nanomanufacturing (IJNM), Vol. 18, No. 3/4, 2023
Abstract: In this paper, a flexible microrobot actuated by acoustic wave is proposed. The microrobot has two flexible sharp tails, the flexible sharp tails oscillate actuated with an external acoustic field and thus generates acoustically streaming to drive the microrobot. By adjusting the actuated frequency of acoustic waves, the motion direction of the microrobot can be regulated. The simulation model of the microrobot is established with software of COMSOL Multiphysics 6.0, the characteristic modes of the microrobot are analysed and its reference actuated frequency are obtained. In addition, the acoustic actuated microrobot simulation model is established to analyse the relationship between the acoustic wave actuated frequency and the harmonic displacement and normal acceleration of the microrobot. Taking the reference actuated frequency as the datum frequency, the acoustic actuated frequencies of the left turning, the right turning and the approximate linear motion modes of the microrobot are optimally obtained.
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