Novel and robust metasurfaces based on optically lossy elements: towards integrated sustainable nanophotonics for color generation

Fernando Chacón-Sánchez; Carlota Ruiz de Galarreta; Martín López-García; Rosalía Serna

doi:10.1117/12.3021764

11 June 2024 Novel and robust metasurfaces based on optically lossy elements: towards integrated sustainable nanophotonics for color generation

Fernando Chacón-Sánchez, Carlota Ruiz de Galarreta, Martín López-García, Rosalía Serna

Author Affiliations +

Proceedings Volume PC12991, Nanophotonics X; PC129910I (2024) https://doi.org/10.1117/12.3021764
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Nanophotonic devices for structural color generation based on plasmonics are usually built using the archetypal noble low loss metals Au and Ag, which are scarce and expensive. In this work, we show how underexplored p-block elements such as Bi or Sb in spite of being lossy, are promising alternative plasmonic materials that yield low-cost, sustainable and high purity colours. First, we demonstrate how Bi can be successfully nanostructured in the form of both gap-plasmon metasurfaces and metal/insulator/metal Fabry-Perot cavity colors, outperforming the colour purity achievable with traditional low loss metals. Second, using thin cavity structures, we explore their color performance on industrially important substrates such as silicon or steel directly as the back reflector. The results show high purity and environmentally robust vivid colors, suitable for cheap, outdoor, and daylight-friendly macroscopic coloring.

Conference Presentation

Citation Download Citation

Fernando Chacón-Sánchez, Carlota Ruiz de Galarreta, Martín López-García, and Rosalía Serna "Novel and robust metasurfaces based on optically lossy elements: towards integrated sustainable nanophotonics for color generation", Proc. SPIE PC12991, Nanophotonics X, PC129910I (11 June 2024); https://doi.org/10.1117/12.3021764

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