A two degrees-of-freedom piezoelectric single-crystal micromotor

Zhijiang Chen, Xiaotian Li, Guoxi Liu, Shuxiang Dong

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


A two degrees-of-freedom (DOF) ultrasonic micromotor made of piezoelectric Pb(In1/2Nb1/2) O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) single crystal square-bar (dimensions 2 × 2 × 9 mm3) was developed. The PIN-PMN-PT square-bar stator can generate standing wave elliptical motions in two orthogonal vertical planes by combining the first longitudinal and second bending vibration modes, enabling it to drive a slider in two orthogonal directions. The relatively large driving forces of 0.25 N and motion speed of 35 mm/s were obtained under a voltage of 80 Vpp at its resonance frequency of 87.5 kHz. The proposed micromotor has potential for applications in micro robots, cell manipulators, and digital cameras as a two-DOF actuator.

Original languageEnglish (US)
Article number224101
JournalJournal of Applied Physics
Issue number22
StatePublished - Dec 14 2014

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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