TY - JOUR

T1 - Topological cavities in phononic plates for robust energy harvesting

AU - Wen, Zhihui

AU - Jin, Yabin

AU - Gao, Penglin

AU - Zhuang, Xiaoying

AU - Rabczuk, Timon

AU - Djafari-Rouhani, Bahram

N1 - Funding Information: This work is supported by the National Natural Science Foundation of China (11902223), the Shanghai Pujiang Program (19PJ1410100), the program for professor of special appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the Fundamental Research Funds for the Central Universities, Shanghai municipal peak discipline program (2019010106) and the High-Level Foreign Expert Program of Tongji University.

PY - 2022/1/1

Y1 - 2022/1/1

N2 - Piezoelectric energy harvesting has attracted tremendous interest for designing sustainable self-powered devices/systems targeted to special environment such as wireless or wearable applications. The traditional cavity (e.g., phononic cavity mode) excitation is highly applicable in terms of sufficient power generation, nevertheless, has to endure the drawback of extremely poor robustness intrinsic to the trivial cavity modes. We propose to use phononic thin plate systems for robust energy harvesting application relying on zero-dimensional cavities confined by the Kekulé distorted topological vortices. The harvesting power induced by topological cavities is about 30 times that of the bare plate. Further studies on the effects of deliberately introduced defects on the output power show that the proposed energy harvesting system is highly robust against symmetry-preserving defects, and is less influenced even for symmetry-breaking defects at moderate perturbation level. Beyond the reported energy harvesting application, we foresee that our work may open avenues for robust operations in the realm of wireless sensing and structural health monitoring.

AB - Piezoelectric energy harvesting has attracted tremendous interest for designing sustainable self-powered devices/systems targeted to special environment such as wireless or wearable applications. The traditional cavity (e.g., phononic cavity mode) excitation is highly applicable in terms of sufficient power generation, nevertheless, has to endure the drawback of extremely poor robustness intrinsic to the trivial cavity modes. We propose to use phononic thin plate systems for robust energy harvesting application relying on zero-dimensional cavities confined by the Kekulé distorted topological vortices. The harvesting power induced by topological cavities is about 30 times that of the bare plate. Further studies on the effects of deliberately introduced defects on the output power show that the proposed energy harvesting system is highly robust against symmetry-preserving defects, and is less influenced even for symmetry-breaking defects at moderate perturbation level. Beyond the reported energy harvesting application, we foresee that our work may open avenues for robust operations in the realm of wireless sensing and structural health monitoring.

KW - Energy harvesting

KW - Phononic thin plate

KW - Piezoelectricity

KW - Robustness

KW - Topological cavity

UR - http://www.scopus.com/inward/record.url?scp=85107842667&partnerID=8YFLogxK

U2 - 10.1016/j.ymssp.2021.108047

DO - 10.1016/j.ymssp.2021.108047

M3 - Article

AN - SCOPUS:85107842667

VL - 162

JO - Mechanical Systems and Signal Processing

JF - Mechanical Systems and Signal Processing

SN - 0888-3270

M1 - 108047

ER -