Compact Metaplate with Bound State in the Continuum: From Quasisymmetry to Symmetry
Building localized states with high quality factors in compact dynamic systems could enhance the performance of wave control devices such as elastic filters and high-precision sensing devices. Here, we report on the theoretical and experimental investigation of symmetry-protected bound states in the continuum (BICs) in a compressed metaplate. The proposed theory establishes a Bessel-zero-directed multipolarization design that enables precise modulation for the frequencies and modes of BICs. Experimental results reveal a critical threshold for symmetric protection, beyond which the polarization mode of BICs still exists despite leakage modes. The measured quality factor of BICs in the cylindrical-shelled metaplate rises to 720 via symmetry translation. The metaplate shows an enhanced performance over conventional defect and topological modes. This work opens a route toward compact elastic devices for applications in fields like on-chip communication, elastic wave filtering, and high-precision sensing within tight environments.
Authors
- Daniel Torrent (ORCID: https://orcid.org/0000-0001-7092-7360)
- Yabin Jin (ORCID: https://orcid.org/0000-0002-6991-8827)
- Zhihui Wen (ORCID: https://orcid.org/0000-0002-1252-1327)
- Marc Martí-Sabaté (ORCID: https://orcid.org/0000-0001-7646-0546)
- Shoubo Dai (ORCID: https://orcid.org/0000-0002-2479-2300)
- Penglin Gao (ORCID: https://orcid.org/0000-0002-8473-2844)
- Yegao Qu
- Jiawei Mao (ORCID: https://orcid.org/0000-0002-6741-7033)
Institutions
- Universitat Jaume I (ES)
- Shanghai Jiao Tong University (CN)
- Fudan University (CN)
- Robotics Research (United States) (US)
- Imperial College London (GB)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-08-19
- DOI
- https://doi.org/10.1103/sbk1-szl7
- Citations
- 2
- Primary Topic
- Acoustic Wave Resonator Technologies
- Type
- article
- Field-Weighted Citation Impact
- 1.35
Funders
- National Natural Science Foundation of China
- Bundesministerium für Bildung und Forschung
- China Postdoctoral Science Foundation
- Generalitat Valenciana
- Science and Technology Commission of Shanghai Municipality
- Shanghai Jiao Tong University
- State Key Laboratory of Mechanical System and Vibration
- Agencia Estatal de Investigación
- National Key Research and Development Program of China