A study on the detection of weathering in the Yungang Grottoes using non-Hermitian wireless sensing

A non-Hermitian wireless-sensing system demonstrates high sensitivity to weathering in stone samples from the Yungang Grottoes, enabling precise detection of material degradation. The study reveals that resonant-frequency responses vary with weathering degree, providing a novel method for assessing damage in cultural heritage sites. By analyzing the relationship between resonant frequency and constituent content, researchers can predict weathering levels in unknown samples, offering technical guidance for conservation efforts. This approach advances non-destructive testing techniques for preserving UNESCO World Heritage Sites like Yungang Grottoes.

Dong, Y., Dong, L., & Shen, X. (2025). A study on the detection of weathering in the Yungang Grottoes using non-Hermitian wireless sensing. AIP Advances, 15(7). https://doi.org/10.1063/5.0278789