Passive highly dispersive matching network enabling broadband electromagnetic absorption
Abstract In numerous applications from radio to optical frequencies including stealth and energy harvesting, there is a need to design electrically thin layers capable of perfectly absorbing electromagnetic waves over a wide bandwidth. However, a theoretical upper bound exists on the bandwidth-to-th...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56167-4 |
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| _version_ | 1832585586392694784 |
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| author | Pardha S. Nayani Morteza Moradi Pooria Salami Younes Ra’di |
| author_facet | Pardha S. Nayani Morteza Moradi Pooria Salami Younes Ra’di |
| author_sort | Pardha S. Nayani |
| collection | DOAJ |
| description | Abstract In numerous applications from radio to optical frequencies including stealth and energy harvesting, there is a need to design electrically thin layers capable of perfectly absorbing electromagnetic waves over a wide bandwidth. However, a theoretical upper bound exists on the bandwidth-to-thickness ratio of metal-backed, passive, linear, and time-invariant absorbing layers. Absorbers developed to date, irrespective of their operational frequency range or material thickness, significantly underperform when compared to this upper bound, failing to exploit the full potential that passive, linear, and time-invariant systems can provide. Here, we introduce a new concept for designing ultra-thin absorbers that enables absorbing layers with a record-high bandwidth-to-thickness ratio, potentially several times greater than that of absorbers designed using conventional approaches. Absorbers designed based on this concept can achieve a bandwidth-to-thickness ratio arbitrarily close to the ultimate bound. Utilizing this concept, we design and experimentally verify an absorber yielding a very high bandwidth-to-thickness ratio. |
| format | Article |
| id | doaj-art-acf34a170be142fa8bb8904ae62e4b11 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-acf34a170be142fa8bb8904ae62e4b112025-01-26T12:42:35ZengNature PortfolioNature Communications2041-17232025-01-0116111310.1038/s41467-025-56167-4Passive highly dispersive matching network enabling broadband electromagnetic absorptionPardha S. Nayani0Morteza Moradi1Pooria Salami2Younes Ra’di3Department of Electrical Engineering and Computer Science, Syracuse UniversityDepartment of Electrical Engineering and Computer Science, Syracuse UniversityDepartment of Electrical Engineering and Computer Science, Syracuse UniversityDepartment of Electrical Engineering and Computer Science, Syracuse UniversityAbstract In numerous applications from radio to optical frequencies including stealth and energy harvesting, there is a need to design electrically thin layers capable of perfectly absorbing electromagnetic waves over a wide bandwidth. However, a theoretical upper bound exists on the bandwidth-to-thickness ratio of metal-backed, passive, linear, and time-invariant absorbing layers. Absorbers developed to date, irrespective of their operational frequency range or material thickness, significantly underperform when compared to this upper bound, failing to exploit the full potential that passive, linear, and time-invariant systems can provide. Here, we introduce a new concept for designing ultra-thin absorbers that enables absorbing layers with a record-high bandwidth-to-thickness ratio, potentially several times greater than that of absorbers designed using conventional approaches. Absorbers designed based on this concept can achieve a bandwidth-to-thickness ratio arbitrarily close to the ultimate bound. Utilizing this concept, we design and experimentally verify an absorber yielding a very high bandwidth-to-thickness ratio.https://doi.org/10.1038/s41467-025-56167-4 |
| spellingShingle | Pardha S. Nayani Morteza Moradi Pooria Salami Younes Ra’di Passive highly dispersive matching network enabling broadband electromagnetic absorption Nature Communications |
| title | Passive highly dispersive matching network enabling broadband electromagnetic absorption |
| title_full | Passive highly dispersive matching network enabling broadband electromagnetic absorption |
| title_fullStr | Passive highly dispersive matching network enabling broadband electromagnetic absorption |
| title_full_unstemmed | Passive highly dispersive matching network enabling broadband electromagnetic absorption |
| title_short | Passive highly dispersive matching network enabling broadband electromagnetic absorption |
| title_sort | passive highly dispersive matching network enabling broadband electromagnetic absorption |
| url | https://doi.org/10.1038/s41467-025-56167-4 |
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