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Title: Multifrequency superscattering from subwavelength hyperbolic structures
Authors: Qian, Chao
Lin, Xiao
Yang, Yi
Gao, Fei
Shen, Yichen
Lopez, Josue
Kaminer, Ido
Zhang, Baile
Li, Erping
Soljačić, Marin
Chen, Hongsheng
Keywords: Hyperbolic Structure
Issue Date: 2018
Source: Qian, C., Lin, X., Yang, Y., Gao, F., Shen, Y., Lopez, J., . . . Chen, H. (2018). Multifrequency superscattering from subwavelength hyperbolic structures. ACS Photonics, 5(4), 1506-1511. doi:10.1021/acsphotonics.7b01534
Series/Report no.: ACS Photonics
Abstract: Superscattering, that is, a phenomenon of the scattering cross section from a subwavelength object exceeding the single-channel limit, has important prospects in enhanced sensing/spectroscopy, solar cells, and biomedical imaging. Superscattering can be typically constructed only at a single frequency regime, and depends critically on the inescapable material losses. Under such realistic conditions, superscattering has not been predicted nor observed to exist simultaneously at multiple frequency regimes. Here we introduce multifrequency superscattering in a subwavelength hyperbolic structure, which can be made from artificial metamaterials or from naturally existing materials, such as hexagonal boron nitride (BN), and show the advantage of such hyperbolic materials for reducing structural complexity. The underlying mechanism is revealed to be the multimode resonances at multiple frequency regimes as appear in BN due to the peculiar dispersion of phonon-polaritons. Importantly, the multifrequency superscattering has a high tolerance to material losses and some structural variations, bringing the concept of multifrequency superscattering closer to useful and realistic conditions.
DOI: 10.1021/acsphotonics.7b01534
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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