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Dry synthesis of bi-layer nanoporous metal films as plasmonic metamaterial
Istituto Italiano di Tecnologia, Via Morego 30, Genova, Italy; Dipartimento di Fisica, Università della Calabria, Via P. Bucci 33b, CS, Rende, Italy; Istituto di Nanotecnologia (CNR-Nanotec) SS di Rende, Via P. Bucci 33c, Rende, Italy.
Institute for Molecular Systems Engineering and Advanced Materials, Heidelberg University, Heidelberg, Germany; Max Planck Institute for Medical Research, Heidelberg, Germany.
Istituto Italiano di Tecnologia, Via Morego 30, Genova, Italy.
Istituto Italiano di Tecnologia, Via Morego 30, Genova, Italy.
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2024 (Engelska)Ingår i: Nanophotonics, ISSN 2192-8606, Vol. 13, nr 7, s. 1159-1167Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

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 prepared 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 treatment 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 interesting 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 components, which is of great interest to applications ranging from sensing, to photochemistry and photocatalysis.

Ort, förlag, år, upplaga, sidor
Walter de Gruyter, 2024. Vol. 13, nr 7, s. 1159-1167
Nyckelord [en]
catholuminescence, EELS, multilayer, nanoporous metal, plasmonics
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Identifikatorer
URN: urn:nbn:se:umu:diva-222964DOI: 10.1515/nanoph-2023-0942ISI: 001182345800001Scopus ID: 2-s2.0-85187950164OAI: oai:DiVA.org:umu-222964DiVA, id: diva2:1850941
Forskningsfinansiär
EU, Horisont 2020, 964995Vetenskapsrådet, 2021-05784Kempestiftelserna, JCK-3122Tillgänglig från: 2024-04-11 Skapad: 2024-04-11 Senast uppdaterad: 2024-04-11Bibliografiskt granskad

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Tapani, TlekLin, HaifengMaccaferri, Nicolò

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