We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Miniaturized electromechanical devices with multi-vibration modes achieved by orderly stacked structure with piezoelectric strain units.
- Authors
Liu, Jinfeng; Gao, Xiangyu; Jin, Haonan; Ren, Kaile; Guo, Jingyu; Qiao, Liao; Qiu, Chaorui; Chen, Wei; He, Yuhang; Dong, Shuxiang; Xu, Zhuo; Li, Fei
- Abstract
Piezoelectric devices based on a variety of vibration modes are widely utilized in high-tech fields to make a conversion between mechanical and electrical energies. The excitation of single or coupled vibration modes of piezoelectric devices is mainly related to the structure and property of piezoelectric materials. However, for the generally used piezoelectric materials, e.g., lead zirconate titanate ceramics, most of piezoelectric coefficients in the piezoelectric matrix are equal to zero, resulting in many piezoelectric vibration modes cannot be excited, which hinders the design of piezoelectric devices. In this work, an orderly stacked structure with piezoelectric strain units is proposed to achieve all nonzero piezoelectric coefficients, and consequently generate artificially coupled multi-vibration modes with ultrahigh strains. As an example, an orderly stacked structure with two piezoelectric strain units stator, corresponding to 31–36 coupled vibration mode, was designed and fabricated. Based on this orderly stacked structure with two piezoelectric strain units stator, we made a miniature ultrasonic motor (5 mmLength × 1.3 mmHeight × 1.06 mmWidth). Due to the ultrahigh strain of the 31–36 coupled vibration mode, the velocity per volume of the motor reached 4.66 s−1 mm−2. Furthermore, its moving resolution is around 3 nm, which is two orders higher than that of other piezoelectric motors. This work sheds a light on optimizing the performance of state-of-the-art electromechanical devices and may inspire new devices based on multi-vibration modes. Most piezoelectric coefficients in piezoelectric ceramics are zero, resulting in many piezoelectric vibration modes cannot be excited. Here, the authors propose an orderly stacked structure to achieve all nonzero piezoelectric coefficients.
- Subjects
PIEZOELECTRIC devices; PIEZOELECTRIC materials; PIEZOELECTRIC motors; SMART structures; PIEZOELECTRIC ceramics; ULTRASONIC motors; ELECTROMECHANICAL devices; LEAD zirconate titanate
- Publication
Nature Communications, 2022, Vol 13, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-022-34231-7