Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 7932-7942 |
| Seitenumfang | 11 |
| Fachzeitschrift | IEEE Transactions on Antennas and Propagation |
| Jahrgang | 73 |
| Ausgabenummer | 10 |
| Frühes Online-Datum | 23 Juli 2025 |
| Publikationsstatus | Veröffentlicht - 14 Okt. 2025 |
Abstract
We demonstrate a computational inverse design method for optimizing broadband-absorbing metasurfaces made of arbitrary dispersive media. Our figure of merit is the time-averaged instantaneous power dissipation in a single unit cell within a periodic array. Its time-domain formulation allows capturing the response of arbitrary dispersive media over any desired spectral range. Employing the time-domain adjoint method within a topology optimization framework enables the design of complex metasurface structures exhibiting unprecedented broadband absorption.We applied the method to a thin-film Silicon-on-insulator configuration and explored the impact of structural and (time-domain inherent) excitation parameters on performance over the visible–ultraviolet. We provide a physical insight into the dissipation mechanism of the optimized structures. Since our incorporated material model can represent any linear material, the method can also be applied to other all-dielectric, plasmonic, or hybrid configurations.
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Elektrotechnik und Elektronik
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in: IEEE Transactions on Antennas and Propagation, Jahrgang 73, Nr. 10, 14.10.2025, S. 7932-7942.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Topology optimization of a superabsorbing thin-film semiconductor metasurface
AU - Gedeon, Johannes
AU - Allayarov, Izzatjon
AU - Hassan, Emadeldeen
AU - Lesina, Antonio Cala
N1 - Publisher Copyright: © 1963-2012 IEEE.
PY - 2025/10/14
Y1 - 2025/10/14
N2 - We demonstrate a computational inverse design method for optimizing broadband-absorbing metasurfaces made of arbitrary dispersive media. Our figure of merit is the time-averaged instantaneous power dissipation in a single unit cell within a periodic array. Its time-domain formulation allows capturing the response of arbitrary dispersive media over any desired spectral range. Employing the time-domain adjoint method within a topology optimization framework enables the design of complex metasurface structures exhibiting unprecedented broadband absorption.We applied the method to a thin-film Silicon-on-insulator configuration and explored the impact of structural and (time-domain inherent) excitation parameters on performance over the visible–ultraviolet. We provide a physical insight into the dissipation mechanism of the optimized structures. Since our incorporated material model can represent any linear material, the method can also be applied to other all-dielectric, plasmonic, or hybrid configurations.
AB - We demonstrate a computational inverse design method for optimizing broadband-absorbing metasurfaces made of arbitrary dispersive media. Our figure of merit is the time-averaged instantaneous power dissipation in a single unit cell within a periodic array. Its time-domain formulation allows capturing the response of arbitrary dispersive media over any desired spectral range. Employing the time-domain adjoint method within a topology optimization framework enables the design of complex metasurface structures exhibiting unprecedented broadband absorption.We applied the method to a thin-film Silicon-on-insulator configuration and explored the impact of structural and (time-domain inherent) excitation parameters on performance over the visible–ultraviolet. We provide a physical insight into the dissipation mechanism of the optimized structures. Since our incorporated material model can represent any linear material, the method can also be applied to other all-dielectric, plasmonic, or hybrid configurations.
KW - Absorption
KW - adjoint method
KW - complex-conjugate pole–residue pairs model
KW - FDTD method
KW - inverse design
KW - metasurface
KW - optical dispersion
KW - quasi-guided modes
KW - silicon
KW - surface lattice resonances
KW - time domain
KW - topology optimization
UR - http://www.scopus.com/inward/record.url?scp=105011527595&partnerID=8YFLogxK
U2 - 10.1109/TAP.2025.3590211
DO - 10.1109/TAP.2025.3590211
M3 - Article
AN - SCOPUS:105011527595
VL - 73
SP - 7932
EP - 7942
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 10
ER -