A High-Temperature Piezoelectric Accelerometer Operating in Symmetric Shear–Bending Coupling Mode
A high-temperature piezoelectric accelerometer, employing a pair of radially polarized BiScO<sub>3</sub>-PbTiO<sub>3</sub> (BS-PT) ceramic rings, operating in symmetric shear-bending coupling vibration mode is proposed. This coupling mode enhances effective electromechanical coupling through a charge amplification factor, yielding a high sensitivity (22.8 pC/g), approximately three times that of conventional shear-type accelerometers at room temperature. The device exhibits stable performance, maintaining a sensitivity of 14 pC/g after repeated thermal cycling between room temperature and 260 °C and during forced vibration tests, while exhibiting a linear response across a wide frequency range. Operation at even higher temperatures is feasible by employing piezoelectric materials with higher Curie temperatures. The demonstrated combination of high sensitivity, thermal reliability, and structural robustness underscores the potential of this accelerometer for applications in aerospace, energy, and nuclear engineering.
Authors
- Yu Lei (ORCID: https://orcid.org/0000-0003-4693-7408)
- Tianlong Zhao (ORCID: https://orcid.org/0000-0002-1912-1502)
- Yang Zhang (ORCID: https://orcid.org/0000-0002-0883-8233)
- Bin Wang (ORCID: https://orcid.org/0009-0001-7917-9327)
- Jikun Yang
- Xinhao Sun (ORCID: https://orcid.org/0000-0001-9736-633X)
- Yunshen Zhou
- Shaotong Gong
- Shuxiang Dong
- Wen Liu
- Xiaoniu Tu
Institutions
- Beijing Institute of Technology (CN)
- Xidian University (CN)
- Shenzhen University (CN)
- Chinese Academy of Sciences (CN)
- Peking University (CN)
- Shanghai Institute of Ceramics (CN)
- University of Science and Technology Beijing (CN)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2026-01-07
- DOI
- https://doi.org/10.1021/acsami.5c16755
- Primary Topic
- Ferroelectric and Piezoelectric Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00