Recent advances in bianisotropic boundary conditions: theory, capabilities, realizations, and applications
In recent years, new functionality and unprecedented wavefront control has been enabled by the introduction of bianisotropic metasurfaces. A bianisotropic metasurface is characterized by an electric response, a magnetic response, and an electro-magnetic/magneto-electric response. In general, these m...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2021-10-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2021-0401 |
| _version_ | 1811320062046371840 |
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| author | Budhu Jordan Grbic Anthony |
| author_facet | Budhu Jordan Grbic Anthony |
| author_sort | Budhu Jordan |
| collection | DOAJ |
| description | In recent years, new functionality and unprecedented wavefront control has been enabled by the introduction of bianisotropic metasurfaces. A bianisotropic metasurface is characterized by an electric response, a magnetic response, and an electro-magnetic/magneto-electric response. In general, these metasurfaces consists of an array of metallic or dielectric particles located within a subwavelength thick host medium, and are approximated and modeled as infinitely-thin, idealized sheet boundaries defined along a surface. An appropriate sheet boundary condition which effectively models the tangential field discontinuity due to the array of magnetoelectric inclusions is the Generalized Sheet Transition Condition or GSTC. Several forms of the GSTC appear in literature. Here, we present each interpretation and show how they are related. Synthesis approaches unique to each form are overviewed. By utilizing the GSTC in metasurface design, new possibilities emerge which are not possible with conventional design techniques incorporating only electric or only magnetic responses. Since the metasurfaces are designed using bianisotropic boundary conditions, they must be realized using particles which contain magnetoelectric responses. This review article discusses the design of metasurfaces using the GSTC, and the bianisotropic particles used to realize GSTC’s. Further, it discusses new and recent applications that have emerged due to bianisotropy, and future prospects in metasurface design using bianisotropic boundary conditions. The intent is to provide a comprehensive overview of metasurface design involving bianisotropy and for this review article to serve as a starting point for engineers and scientist that wish to introduce bianisotropy into metasurface design. |
| first_indexed | 2024-04-13T12:53:49Z |
| format | Article |
| id | doaj.art-50d1bfd4ad1e48b297d5a1b02ef0cf8c |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-04-13T12:53:49Z |
| publishDate | 2021-10-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-50d1bfd4ad1e48b297d5a1b02ef0cf8c2022-12-22T02:46:07ZengDe GruyterNanophotonics2192-86142021-10-0110164075411210.1515/nanoph-2021-0401Recent advances in bianisotropic boundary conditions: theory, capabilities, realizations, and applicationsBudhu Jordan0Grbic Anthony1Electrical and Computer Engineering Department, University of Michigan, Ann Arbor, MI48109, USAElectrical and Computer Engineering Department, University of Michigan, Ann Arbor, MI48109, USAIn recent years, new functionality and unprecedented wavefront control has been enabled by the introduction of bianisotropic metasurfaces. A bianisotropic metasurface is characterized by an electric response, a magnetic response, and an electro-magnetic/magneto-electric response. In general, these metasurfaces consists of an array of metallic or dielectric particles located within a subwavelength thick host medium, and are approximated and modeled as infinitely-thin, idealized sheet boundaries defined along a surface. An appropriate sheet boundary condition which effectively models the tangential field discontinuity due to the array of magnetoelectric inclusions is the Generalized Sheet Transition Condition or GSTC. Several forms of the GSTC appear in literature. Here, we present each interpretation and show how they are related. Synthesis approaches unique to each form are overviewed. By utilizing the GSTC in metasurface design, new possibilities emerge which are not possible with conventional design techniques incorporating only electric or only magnetic responses. Since the metasurfaces are designed using bianisotropic boundary conditions, they must be realized using particles which contain magnetoelectric responses. This review article discusses the design of metasurfaces using the GSTC, and the bianisotropic particles used to realize GSTC’s. Further, it discusses new and recent applications that have emerged due to bianisotropy, and future prospects in metasurface design using bianisotropic boundary conditions. The intent is to provide a comprehensive overview of metasurface design involving bianisotropy and for this review article to serve as a starting point for engineers and scientist that wish to introduce bianisotropy into metasurface design.https://doi.org/10.1515/nanoph-2021-0401bianisotropicgeneralized sheet transition conditionsgstcmetasurface |
| spellingShingle | Budhu Jordan Grbic Anthony Recent advances in bianisotropic boundary conditions: theory, capabilities, realizations, and applications Nanophotonics bianisotropic generalized sheet transition conditions gstc metasurface |
| title | Recent advances in bianisotropic boundary conditions: theory, capabilities, realizations, and applications |
| title_full | Recent advances in bianisotropic boundary conditions: theory, capabilities, realizations, and applications |
| title_fullStr | Recent advances in bianisotropic boundary conditions: theory, capabilities, realizations, and applications |
| title_full_unstemmed | Recent advances in bianisotropic boundary conditions: theory, capabilities, realizations, and applications |
| title_short | Recent advances in bianisotropic boundary conditions: theory, capabilities, realizations, and applications |
| title_sort | recent advances in bianisotropic boundary conditions theory capabilities realizations and applications |
| topic | bianisotropic generalized sheet transition conditions gstc metasurface |
| url | https://doi.org/10.1515/nanoph-2021-0401 |
| work_keys_str_mv | AT budhujordan recentadvancesinbianisotropicboundaryconditionstheorycapabilitiesrealizationsandapplications AT grbicanthony recentadvancesinbianisotropicboundaryconditionstheorycapabilitiesrealizationsandapplications |