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A High-Temperature Piezoelectric Accelerometer Operating in Symmetric Shear-Bending Coupling Mode.

Wen Liu1,2, Bing Wang1, Shaotong Gong2

  • 1Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China.

ACS Applied Materials & Interfaces
|January 7, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a high-temperature piezoelectric accelerometer using BiScO3-PbTiO3 ceramic rings. The novel design achieves high sensitivity and stable performance across a wide temperature range, ideal for demanding environments.

Keywords:
BiScO3−PbTiO3 ceramic ringshigh sensitivityhigh-temperature applicationspiezoelectric accelerometershear–bending coupling

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Electrical Engineering

Background:

  • Piezoelectric accelerometers are crucial for measuring vibration.
  • High-temperature applications require robust sensors with stable performance.
  • Existing shear-type accelerometers often lack sufficient sensitivity and thermal stability.

Purpose of the Study:

  • To propose a novel high-temperature piezoelectric accelerometer design.
  • To investigate its performance in terms of sensitivity, thermal stability, and linearity.
  • To explore its potential for aerospace, energy, and nuclear engineering applications.

Main Methods:

  • Utilized radially polarized BiScO3-PbTiO3 (BS-PT) ceramic rings.
  • Operated the device in a symmetric shear-bending coupling vibration mode.
  • Conducted thermal cycling tests (room temperature to 260 °C) and forced vibration tests.

Main Results:

  • Achieved high sensitivity of 22.8 pC/g at room temperature, ~3x conventional shear-type accelerometers.
  • Demonstrated stable performance with 14 pC/g sensitivity after thermal cycling and vibration tests.
  • Exhibited a linear response over a wide frequency range.

Conclusions:

  • The proposed accelerometer offers high sensitivity and excellent thermal reliability.
  • Its robust design is suitable for harsh, high-temperature environments.
  • Further development with higher Curie temperature materials can extend operational limits.