Ultrasensitive piezoelectric sensor based on two-dimensional Na2Cl crystals with periodic atom vacancies

Tao Wang; Yan Fan; Jie Jiang; Yangyang Zhang; Yingying Huang; Liuyuan Zhu; Haifei Zhan; Chunli Zhang; Bingquan Peng; Zhen Gu; Qiubo Pan; Junjie Wu; Junlang Chen; Pei Li; Lei Zhang; Liang Chen; Chaofeng Lü; Haiping Fang

arXiv · 2401.07315

Ultrasensitive piezoelectric sensor based on two-dimensional Na2Cl crystals with periodic atom vacancies

Tao Wang·Yan Fan·Jie Jiang·Yangyang Zhang·Yingying Huang·Liuyuan Zhu·Haifei Zhan·Chunli Zhang·Bingquan Peng·Zhen Gu·Qiubo Pan·Junjie Wu·Junlang Chen·Pei Li·Lei Zhang·Liang Chen·Chaofeng Lü·Haiping Fang

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Abstract

Pursuing ultrasensitivity of pressure sensors has been a long-standing goal. Here, we report a piezoelectric sensor that exhibits supreme pressure-sensing performance, including a peak sensitivity up to 3.5*10^6 kPa^-1 in the pressure range of 1-100 mPa and a detection limit of less than 1 mPa, superior to the current state-of-the-art pressure sensors. These properties are attributed to the high percentage of periodic atom vacancies in the two-dimensional Na2Cl crystals formed within multilayered graphene oxide membrane in the sensor, which provides giant polarization with high stability. The sensor can even clearly detect the airflow fluctuations surrounding a flapping butterfly, which have long been the elusive tiny signals in the famous "butterfly effect". The finding represents a step towards next-generation pressure sensors for various precision applications.

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Tao Wang, Yan Fan, Jie Jiang, Yangyang Zhang, Yingying Huang, Liuyuan Zhu, Haifei Zhan, Chunli Zhang, Bingquan Peng, Zhen Gu, Qiubo Pan, Junjie Wu, Junlang Chen, Pei Li, Lei Zhang, Liang Chen, Chaofeng Lü, Haiping Fang. 2024-01-14. Ultrasensitive piezoelectric sensor based on two-dimensional Na2Cl crystals with periodic atom vacancies. https://arxiv.org/abs/2401.07315

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