Multifrequency superscattering from subwavelength hyperbolic structures

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 frequenc...

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Main Authors: Qian, Chao, Lin, Xiao, Yang, Yi, Gao, Fei, Shen, Yichen, Lopez, Josue, Kaminer, Ido, Zhang, Baile, Li, Erping, Soljačić, Marin, Chen, Hongsheng
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2019
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Online Access:https://hdl.handle.net/10356/85189
http://hdl.handle.net/10220/50275
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-851892023-02-28T19:31:39Z Multifrequency superscattering from subwavelength hyperbolic structures Qian, Chao Lin, Xiao Yang, Yi Gao, Fei Shen, Yichen Lopez, Josue Kaminer, Ido Zhang, Baile Li, Erping Soljačić, Marin Chen, Hongsheng School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies Hyperbolic Structure Science::Physics Superscattering 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. MOE (Min. of Education, S’pore) Accepted version 2019-10-29T07:56:46Z 2019-12-06T15:59:05Z 2019-10-29T07:56:46Z 2019-12-06T15:59:05Z 2018 Journal Article 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 https://hdl.handle.net/10356/85189 http://hdl.handle.net/10220/50275 10.1021/acsphotonics.7b01534 en ACS Photonics 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 https://doi.org/10.1021/acsphotonics.7b01534 16 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Hyperbolic Structure
Science::Physics
Superscattering
spellingShingle Hyperbolic Structure
Science::Physics
Superscattering
Qian, Chao
Lin, Xiao
Yang, Yi
Gao, Fei
Shen, Yichen
Lopez, Josue
Kaminer, Ido
Zhang, Baile
Li, Erping
Soljačić, Marin
Chen, Hongsheng
Multifrequency superscattering from subwavelength hyperbolic structures
description 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.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Qian, Chao
Lin, Xiao
Yang, Yi
Gao, Fei
Shen, Yichen
Lopez, Josue
Kaminer, Ido
Zhang, Baile
Li, Erping
Soljačić, Marin
Chen, Hongsheng
format Article
author Qian, Chao
Lin, Xiao
Yang, Yi
Gao, Fei
Shen, Yichen
Lopez, Josue
Kaminer, Ido
Zhang, Baile
Li, Erping
Soljačić, Marin
Chen, Hongsheng
author_sort Qian, Chao
title Multifrequency superscattering from subwavelength hyperbolic structures
title_short Multifrequency superscattering from subwavelength hyperbolic structures
title_full Multifrequency superscattering from subwavelength hyperbolic structures
title_fullStr Multifrequency superscattering from subwavelength hyperbolic structures
title_full_unstemmed Multifrequency superscattering from subwavelength hyperbolic structures
title_sort multifrequency superscattering from subwavelength hyperbolic structures
publishDate 2019
url https://hdl.handle.net/10356/85189
http://hdl.handle.net/10220/50275
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