Non-Hermitian topolectrical circuit sensor with high sensitivity

• DOI: 10.48550/arxiv.2304.13870
• Publication Date: 2023-01-01
• Authors: Hao Yuan; Weixuan Zhang; Zilong Zhou; Wenlong Wang; Naiqiao Pan; Yue Feng; Houjun Sun; Xiangdong Zhang
• Keywords: Robustness

Electronic sensors play important roles in various applications, such as industry and environmental monitoring, biomedical sample ingredient analysis, wireless networks so on. However, the sensitivity robustness of current schemes are often limited by low quality-factors resonators fabrication disorders. Hence, exploring new mechanisms electronic sensor with a high-level strong is great significance. Here, we propose way to design superior performances based on exotic properties non-Hermitian topological physics. Owing extreme boundary-sensitivity zero modes, frequency shift induced boundary perturbations can show an exponential growth trend respect size topolectrical circuit sensors. Moreover, also robust against disorders elements. Using designed sensors, further experimentally verify ultra-sensitive identification distance, rotation angle, liquid level capacitive devices. Our proposed possess wide range applications monitoring exciting prospect for nextgeneration sensing technologies.