Work

Observation of higher-order exceptional points in a non-local acoustic metagrating

Year: 2021

Type: article

Abstract: Higher-order exceptional points have attracted increased attention in recent years due to their enhanced sensitivity and distinct topological features. Here, we show that non-local acoustic metagratings enabling precise and simultaneous control over their multiple orders of diffraction can serve as a robust platform for investigating higher-order exceptional points in free space. The proposed metagratings, not only could advance the fundamental research of arbitrary order exceptional points, but could also empower unconventional free-space wave manipulation for applications related to sensing and extremely asymmetrical wave control.

Source: Communications Physics

DOI: 10.1038/s42005-021-00779-x

Authors: Xinsheng Fang, Nikhil J R K Gerard, Zhiling Zhou, Hua Ding, Nengyin Wang, Bin Jia, Yuanchen Deng, Xu Wang, Yun Jing, Yong Li

Institutions: Tongji University, Pennsylvania State University

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,290

Funders: National Science Foundation, National Natural Science Foundation of China, Science and Technology Commission of Shanghai Municipality, Division of Civil, Mechanical and Manufacturing Innovation

Awards: G1426580192, 相位和幅度耦合多重干涉型声屏障机理研究, G4598012493, 非局域及非厄米声学超构表面与功能器件, G5228698257, G5329684847, 高速气流及高声强下超构表面吸声降噪机理研究, Collaborative Research: Engineering Exceptional Points for Sound Control with Non-Hermitian Acoustic Metasurfaces

OpenAlex ID: W3175833095

FWCI: 2.053

Cites: 36

Cited by: 38

Related to: 10