Dry synthesis of bi-layer nanoporous metal films as plasmonic metamaterial
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866910363861123072 |
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| author | Caligiuri, Vincenzo Kwon, Hyunah Griesi, Andrea Ivanov, Yurii P. Schirato, Andrea Alabastri, Alessandro Cuscunà, Massimo Balestra, Gianluca De Luca, Antonio Tapani, Tlek Lin, Haifeng Maccaferri, Nicolo Krahne, Roman Divitini, Giorgio Fischer, Peer Garoli, Denis |
| author_facet | Caligiuri, Vincenzo Kwon, Hyunah Griesi, Andrea Ivanov, Yurii P. Schirato, Andrea Alabastri, Alessandro Cuscunà, Massimo Balestra, Gianluca De Luca, Antonio Tapani, Tlek Lin, Haifeng Maccaferri, Nicolo Krahne, Roman Divitini, Giorgio Fischer, Peer Garoli, Denis |
| contents | Nanoporous metals are a class of nanostructured materials finding extensive applications in multiple fields thanks to their unique properties attributed to their high surface area and interconnected nanoscale ligaments. They can be pre-pared following different strategies, but the deposition of an arbitrary pure porous metal is still challenging. Recently, a dry synthesis of nanoporous films based on the plasma treat-ment of metal thin layers deposited by physical vapour deposition has been demonstrated, as a general route to form pure nanoporous films from a large set of metals. An interest-ing aspect related to this approach is the possibility to apply the same methodology to deposit the porous films as a multilayer. In this way, it is possible to explore the properties of different porous metals in close contact. As demonstrated in this paper, interesting plasmonic properties emerge in a nanoporous Au-Ag bi-layer. The versatility of the method coupled with the possibility to include many different metals, provides an opportunity to tailor their optical resonances and to exploit the chemical and mechanical properties of compo-nents, which is of great interest to applications ranging from sensing, to photochemistry and photocatalysis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_15438 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Dry synthesis of bi-layer nanoporous metal films as plasmonic metamaterial Caligiuri, Vincenzo Kwon, Hyunah Griesi, Andrea Ivanov, Yurii P. Schirato, Andrea Alabastri, Alessandro Cuscunà, Massimo Balestra, Gianluca De Luca, Antonio Tapani, Tlek Lin, Haifeng Maccaferri, Nicolo Krahne, Roman Divitini, Giorgio Fischer, Peer Garoli, Denis Applied Physics Nanoporous metals are a class of nanostructured materials finding extensive applications in multiple fields thanks to their unique properties attributed to their high surface area and interconnected nanoscale ligaments. They can be pre-pared following different strategies, but the deposition of an arbitrary pure porous metal is still challenging. Recently, a dry synthesis of nanoporous films based on the plasma treat-ment of metal thin layers deposited by physical vapour deposition has been demonstrated, as a general route to form pure nanoporous films from a large set of metals. An interest-ing aspect related to this approach is the possibility to apply the same methodology to deposit the porous films as a multilayer. In this way, it is possible to explore the properties of different porous metals in close contact. As demonstrated in this paper, interesting plasmonic properties emerge in a nanoporous Au-Ag bi-layer. The versatility of the method coupled with the possibility to include many different metals, provides an opportunity to tailor their optical resonances and to exploit the chemical and mechanical properties of compo-nents, which is of great interest to applications ranging from sensing, to photochemistry and photocatalysis. |
| title | Dry synthesis of bi-layer nanoporous metal films as plasmonic metamaterial |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2312.15438 |