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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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 |
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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 |
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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. |
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School of Physical and Mathematical Sciences |
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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 |
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multifrequency superscattering from subwavelength hyperbolic structures |
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2019 |
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https://hdl.handle.net/10356/85189 http://hdl.handle.net/10220/50275 |
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