Scholarlink

<p>Temperature monitoring underpins critical processes in electronics, energy systems, and biomedical applications. Piezoelectric resonant temperature sensors based on lead zirconate titanate (PZT) are widely favored for their rapid thermal response and compact size, yet their linear temperature dependence severely limits the sensitivity. Here, we introduce a novel approach to piezoelectric thermometry by applying non-Hermitian physics and anti-parity−time (APT) symmetry to PZT resonators. The system couples two PZT resonators through energy interactions with gain/loss, forming an APT-symmetric architecture that operates at an exceptional point (EP). This configuration dramatically amplifies minute temperature-induced perturbations, achieving an ultrahigh temperature coefficient of frequency (TCF) of −1500 ppm·K<sup>-1</sup> indicating a 17-fold enhancement over conventional single PZT sensors (~88 ppm·K<sup>-1</sup>), and over twice the sensitivity of state-of-the-art resonant temperature sensors without sacrificing power consumption or device size. Experimental results confirm a 2× improvement in signal-to-noise ratio (SNR) and dynamic adaptability. Unlike its PT-symmetric counterparts, APT symmetry tolerates intrinsic mismatches between PZTs, enabling robust EP operation and reconfigurability across a wide temperature range. By uniting non-Hermitian physics with piezoelectric platforms, this work establishes a new framework for piezoelectric thermometry in advanced electronics, energy storage, and biomedical systems.</p><p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Exceptional point-enhanced piezoelectric thermometry via anti-parity−time symmetry

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月15日

查看全文
  • Jiajun Wang,
  • Jie Li,
  • Bei Wu,
  • Xiwei Huang,
  • Wenjun Li,
  • Jikui Luo,
  • Minye Yang,
  • Shurong Dong,
  • Weipeng Xuan

摘要

Temperature monitoring underpins critical processes in electronics, energy systems, and biomedical applications. Piezoelectric resonant temperature sensors based on lead zirconate titanate (PZT) are widely favored for their rapid thermal response and compact size, yet their linear temperature dependence severely limits the sensitivity. Here, we introduce a novel approach to piezoelectric thermometry by applying non-Hermitian physics and anti-parity−time (APT) symmetry to PZT resonators. The system couples two PZT resonators through energy interactions with gain/loss, forming an APT-symmetric architecture that operates at an exceptional point (EP). This configuration dramatically amplifies minute temperature-induced perturbations, achieving an ultrahigh temperature coefficient of frequency (TCF) of −1500 ppm·K-1 indicating a 17-fold enhancement over conventional single PZT sensors (~88 ppm·K-1), and over twice the sensitivity of state-of-the-art resonant temperature sensors without sacrificing power consumption or device size. Experimental results confirm a 2× improvement in signal-to-noise ratio (SNR) and dynamic adaptability. Unlike its PT-symmetric counterparts, APT symmetry tolerates intrinsic mismatches between PZTs, enabling robust EP operation and reconfigurability across a wide temperature range. By uniting non-Hermitian physics with piezoelectric platforms, this work establishes a new framework for piezoelectric thermometry in advanced electronics, energy storage, and biomedical systems.