Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105195
Title: Experimental observation of superscattering
Authors: Qian, Chao
Lin, Xiao
Yang, Yi
Xiong, Xiaoyan
Wang, Huaping
Li, Erping
Kaminer, Ido
Zhang, Baile
Chen, Hongsheng
Keywords: DRNTU::Science::Physics
Electromagnetic Interactions
Light-matter Interaction
Issue Date: 2019
Source: Qian, C., Lin, X., Yang, Y., Xiong, X., Wang, H., Li, E., . . . Chen, H. (2019). Experimental observation of superscattering. Physical Review Letters, 122(6), 063901-. doi:10.1103/PhysRevLett.122.063901
Series/Report no.: Physical Review Letters
Abstract: Superscattering, induced by degenerate resonances, breaks the fundamental single-channel limit of the scattering cross section of subwavelength structures; in principle, an arbitrarily large total cross section can be achieved via superscattering. It thus provides a unique way to strengthen the light-matter interaction at the subwavelength scale, and has many potential applications in sensing, energy harvesting, bioimaging (such as magnetic resonance imaging), communication, and optoelectronics. However, the experimental demonstration of superscattering remains an open challenge due to its vulnerability to structural imperfections and intrinsic material losses. Here we report the first experimental evidence for superscattering by demonstrating the superscattering simultaneously in two different frequency regimes through both the far-field and near-field measurements. The underlying mechanism for the observed superscattering is the degenerate resonances of confined surface waves, by utilizing a subwavelength metasurface-based multilayer structure. Our work paves the way towards practical applications based on superscattering.
URI: https://hdl.handle.net/10356/105195
http://hdl.handle.net/10220/48637
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.122.063901
Rights: © 2019 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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