| Autor: |
Junjeong Park, Sun K. Hong, Haejun Chung |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 10, Pp 40402-40409 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2022.3165052 |
| Popis: |
Realizing electromagnetic transparency in the visible light regime and beyond is an important challenge in both fundamental electromagnetics and angular-independent spectral filters for 6G communication and military applications. A conventional way of achieving electromagnetic transparency is based on Surface Plasmon Resonances (SPRs) of symmetric metallic spherical or cylindrical structures. However, symmetric objects have a constraint on their shape tunability, limiting them to visible wavelength applications. In this work, we address the limitation by designing floating nano-chips with a broken symmetry using a cluster of silver ellipsoids. We combine Bohren and Huffman analytic solutions and particle swarm optimization to accelerate the discovery of the optimum ellipsoid designs. The optimized nano-chips demonstrate clear angle-independent transparency at the 1450–1500nm wavelength window. This result is validated in full-wave Maxwell’s solution via three-dimensional finite-difference time-domain method. The proposed design method can be extended to electromagnetic applications that require a design and optimization of small objects ( $< \lambda /200$ ) compared to their operating wavelength. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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