TY - JOUR
T1 - Observation of higher-order exceptional points in a non-local acoustic metagrating
AU - Fang, Xinsheng
AU - Gerard, Nikhil J.R.K.
AU - Zhou, Zhiling
AU - Ding, Hua
AU - Wang, Nengyin
AU - Jia, Bin
AU - Deng, Yuanchen
AU - Wang, Xu
AU - Jing, Yun
AU - Li, Yong
N1 - Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/85121556262
UR - https://www.scopus.com/pages/publications/85121556262#tab=citedBy
U2 - 10.1038/s42005-021-00779-x
DO - 10.1038/s42005-021-00779-x
M3 - Article
AN - SCOPUS:85121556262
SN - 2399-3650
VL - 4
JO - Communications Physics
JF - Communications Physics
IS - 1
M1 - 271
ER -