High-efficiency broadband active metasurfaces via reversible metal electrodeposition
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866909980527951872 |
|---|---|
| author | Li, Qizhang Kulkarni, Sachin Prashant Sui, Chenxi Chen, Ting-Hsuan Yan, Gangbin Wu, Ronghui Chen, Wen Hung, Pei-Jan Wu, Xubing Emersic, Tadej Aydin, Koray Hsu, Po-Chun |
| author_facet | Li, Qizhang Kulkarni, Sachin Prashant Sui, Chenxi Chen, Ting-Hsuan Yan, Gangbin Wu, Ronghui Chen, Wen Hung, Pei-Jan Wu, Xubing Emersic, Tadej Aydin, Koray Hsu, Po-Chun |
| contents | Realizing active metasurfaces with substantial tunability is important for many applications but remains challenging due to difficulties in dynamically tuning light-matter interactions at subwavelength scales. Here, we introduce reversible metal electrodeposition as a versatile approach for enabling active metasurfaces with exceptional tunability across a broad bandwidth. As a proof of concept, we demonstrate a dynamic beam-steering device by performing reversible copper (Cu) electrodeposition on a reflective gradient metasurface composed of metal-insulator-metal resonators. By applying different voltages, the Cu atoms can be uniformly and reversibly electrodeposited and stripped around the resonators, effectively controlling the gap-surface plasmon resonances and steering the reflected light. This process experimentally achieved >90% diffraction efficiencies and >60% reflection efficiencies in both specular and anomalous modes, even after thousands of cycles. Moreover, these high efficiencies can be extended from the visible to the near- and mid-infrared regimes, demonstrating the broad versatility of this approach in enabling various active optical and thermal devices with different working wavelengths and bandwidths. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_05612 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-efficiency broadband active metasurfaces via reversible metal electrodeposition Li, Qizhang Kulkarni, Sachin Prashant Sui, Chenxi Chen, Ting-Hsuan Yan, Gangbin Wu, Ronghui Chen, Wen Hung, Pei-Jan Wu, Xubing Emersic, Tadej Aydin, Koray Hsu, Po-Chun Optics Materials Science Applied Physics Realizing active metasurfaces with substantial tunability is important for many applications but remains challenging due to difficulties in dynamically tuning light-matter interactions at subwavelength scales. Here, we introduce reversible metal electrodeposition as a versatile approach for enabling active metasurfaces with exceptional tunability across a broad bandwidth. As a proof of concept, we demonstrate a dynamic beam-steering device by performing reversible copper (Cu) electrodeposition on a reflective gradient metasurface composed of metal-insulator-metal resonators. By applying different voltages, the Cu atoms can be uniformly and reversibly electrodeposited and stripped around the resonators, effectively controlling the gap-surface plasmon resonances and steering the reflected light. This process experimentally achieved >90% diffraction efficiencies and >60% reflection efficiencies in both specular and anomalous modes, even after thousands of cycles. Moreover, these high efficiencies can be extended from the visible to the near- and mid-infrared regimes, demonstrating the broad versatility of this approach in enabling various active optical and thermal devices with different working wavelengths and bandwidths. |
| title | High-efficiency broadband active metasurfaces via reversible metal electrodeposition |
| topic | Optics Materials Science Applied Physics |
| url | https://arxiv.org/abs/2504.05612 |