Building Conventional Metasurfaces with Unconventional Interband Plasmonics: A Versatile Route for Sustainable Structural Color Generation Based on Bismuth (Advanced Optical Materials 10/2024)

Interband Plasmonics Structural color generation driven by plasmonic nanostructures is nowadays mostly based on archetypal metals such as Au and Ag. In article number 2302130, Carlota Ruiz de Galarreta, Rosalia Serna, and co-workers demonstrate how single-element, non-conventional interband plasmonic materials, such as bismuth, can be successfully nanostructured towards the realization of both gap-plasmon metasurfaces and Fabry–Pérot cavities for subtractive color displays. This work demonstrates the potential of bismuth as a reliable candidate for visible interband plasmonics, while inspiring the use of alternative p-block materials as suitable plasmonic elements in a near future.