Topological hyperbolic metamaterials
Hyperbolic metamaterial (HMM) is a unique type of anisotropic material that can exhibit metal and dielectric properties at the same time. This unique characteristic results in it having unbounded isofrequency surface contours, leading to exotic phenomena such as spontaneous emission enhancement and...
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De Gruyter
2024-02-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2023-0768 |
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| author | Li Zhitong Gu Qing |
| author_facet | Li Zhitong Gu Qing |
| author_sort | Li Zhitong |
| collection | DOAJ |
| description | Hyperbolic metamaterial (HMM) is a unique type of anisotropic material that can exhibit metal and dielectric properties at the same time. This unique characteristic results in it having unbounded isofrequency surface contours, leading to exotic phenomena such as spontaneous emission enhancement and applications such as super-resolution imaging. However, at optical frequencies, HMM must be artificially engineered and always requires a metal constituent, whose intrinsic loss significantly limits the experimentally accessible wave vector values, thus negatively impacting the performance of these applications. The need to reduce loss in HMM stimulated the development of the second-generation HMM, termed active HMM, where gain materials are utilized to compensate for metal’s intrinsic loss. With the advent of topological photonics that allows robust light transportation immune to disorders and defects, research on HMM also entered the topological regime. Tremendous efforts have been dedicated to exploring the topological transition from elliptical to hyperbolic dispersion and topologically protected edge states in HMM, which also prompted the invention of lossless HMM formed by all-dielectric material. Furthermore, emerging twistronics can also provide a route to manipulate topological transitions in HMMs. In this review, we survey recent progress in topological effects in HMMs and provide prospects on possible future research directions. |
| format | Article |
| id | doaj-art-a82861de9a2a468b8c6545a623e378ed |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-a82861de9a2a468b8c6545a623e378ed2024-11-25T11:19:11ZengDe GruyterNanophotonics2192-86142024-02-0113682583910.1515/nanoph-2023-0768Topological hyperbolic metamaterialsLi Zhitong0Gu Qing1State Key Laboratory of Information Photonics and Optical Communications, School of Science, Beijing University of Posts and Telecommunications, Beijing100876, ChinaDepartment of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC27695, USAHyperbolic metamaterial (HMM) is a unique type of anisotropic material that can exhibit metal and dielectric properties at the same time. This unique characteristic results in it having unbounded isofrequency surface contours, leading to exotic phenomena such as spontaneous emission enhancement and applications such as super-resolution imaging. However, at optical frequencies, HMM must be artificially engineered and always requires a metal constituent, whose intrinsic loss significantly limits the experimentally accessible wave vector values, thus negatively impacting the performance of these applications. The need to reduce loss in HMM stimulated the development of the second-generation HMM, termed active HMM, where gain materials are utilized to compensate for metal’s intrinsic loss. With the advent of topological photonics that allows robust light transportation immune to disorders and defects, research on HMM also entered the topological regime. Tremendous efforts have been dedicated to exploring the topological transition from elliptical to hyperbolic dispersion and topologically protected edge states in HMM, which also prompted the invention of lossless HMM formed by all-dielectric material. Furthermore, emerging twistronics can also provide a route to manipulate topological transitions in HMMs. In this review, we survey recent progress in topological effects in HMMs and provide prospects on possible future research directions.https://doi.org/10.1515/nanoph-2023-0768hyperbolic dispersiontopological transitionloss compensationall-dielectric hyperbolic metamaterialtwistronicstopological edge state |
| spellingShingle | Li Zhitong Gu Qing Topological hyperbolic metamaterials Nanophotonics hyperbolic dispersion topological transition loss compensation all-dielectric hyperbolic metamaterial twistronics topological edge state |
| title | Topological hyperbolic metamaterials |
| title_full | Topological hyperbolic metamaterials |
| title_fullStr | Topological hyperbolic metamaterials |
| title_full_unstemmed | Topological hyperbolic metamaterials |
| title_short | Topological hyperbolic metamaterials |
| title_sort | topological hyperbolic metamaterials |
| topic | hyperbolic dispersion topological transition loss compensation all-dielectric hyperbolic metamaterial twistronics topological edge state |
| url | https://doi.org/10.1515/nanoph-2023-0768 |
| work_keys_str_mv | AT lizhitong topologicalhyperbolicmetamaterials AT guqing topologicalhyperbolicmetamaterials |