Exceptional point-enhanced piezoelectric thermometry via anti-parity−time symmetry (opens in new tab)

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 s...