The multi-frequency metastructure vibration motor design for dynamic rotary and morphology manipulation of objects

The vibrating plate has been extensively studied for objects manipulation. The manipulation is based on controlling the vibration modes, by which objects are generally trapped to nodal lines. However, it still remains a challenge for controlling desired nodal lines patterns. In this work, the vibration motor is proposed by operating multi-frequency rotatable bending modes with cross-like nodal lines. Then, the rotary and morphology manipulation characteristics are realized by precisely trapping objects to the cross-like nodal lines at arbitrary rotation angles. Firstly, we use the metastructure, which is connected by multiple plates, to expand the vibration eigenmodes with the same nodal lines patterns in different directions. Then, the vibration motor is realized by operating the rotary of multi-frequency bending modes in form of cross-like nodal lines. Furthermore, the metastructure vibration motor exhibits morphology of multiple particles assemblages with collection, and rotation through switching different rotatable vibration modes. Finally, the rotary manipulation for different objects such as a long stick is realized by the vibration motor. This work paves a way for the control of complex vibration modes, thereby enabling the vibration motor, and particles self-assembly.