Mechanically Assisted Symmetry Reconstruction for Extraordinary Piezoelectricity
Abstract
Active symmetry control - a central challenge in materials science, particularly in ferroelectrics - is achieved via mechanically assisted poling (MAP) guided by thermodynamics and phase - field modeling. This approach yields extraordinary piezoelectric coefficients (about 5,000 pC/N at 24 degC; 11,700 pC/N at 58 degC) together with about 65% optical transmittance in a classic relaxor ferroelectric, Pb(Mg1/3Nb2/3)O3-PbTiO3. Mechanical suppression of undesirable phases stabilizes a reconstructed symmetry with highly ordered domains, verified by multiple characterization techniques. The strategy is validated across several distinct ferroelectric systems. To demonstrate its practical utility, we fabricate a transparent dual-modal wearable sensor integrating continuous blood pressure monitoring via piezoelectricity with photoplethysmographic SpO2 detection, enabling high-fidelity physiological tracking. This work establishes mechanically assisted symmetry reconstruction as a pathway to multifunctional optoelectronic materials and compact wearable health technologies.
Cite
@article{arxiv.2603.00740,
title = {Mechanically Assisted Symmetry Reconstruction for Extraordinary Piezoelectricity},
author = {Jinhui Fan and Chonghe Wang and Xiaoyan Lu and Yunpeng Ma and Zijian Hong and Yuzhao Qi and Yanzhe Dong and Xiaoyue Zhang and Chuchu Yang and Yongchun Zou and Xu Zheng and Xiaolong Li and Qian Li and Xiang Xu and Si-Young Choi and Jiyan Dai and Wenwu Cao and Dragan Damjanovic and Hui Li},
journal= {arXiv preprint arXiv:2603.00740},
year = {2026}
}
Comments
14 pages, 5 figures plus Supplementary Materials