Tailoring iridescent visual appearance with disordered resonant metasurfaces
Language
en
Article de revue
This item was published in
ACS Nano. 2023, vol. 17, n° 7, p. 6362-6372
American Chemical Society
English Abstract
The nanostructures of natural species offer beautiful visual appearances with saturated and iridescent colors, and the question arises whether we can reproduce or even create unique appearances with man-made metasurfaces. ...Read more >
The nanostructures of natural species offer beautiful visual appearances with saturated and iridescent colors, and the question arises whether we can reproduce or even create unique appearances with man-made metasurfaces. However, harnessing the specular and diffuse light scattered by disordered metasurfaces to create attractive and prescribed visual effects is currently inaccessible. Here, we present an interpretive, intuitive, and accurate modal-based tool that unveils the main physical mechanisms and features defining the appearance of colloidal disordered monolayers of resonant meta-atoms deposited on a reflective substrate. The model shows that the combination of plasmonic and Fabry–Perot resonances offers uncommon iridescent visual appearances, differing from those classically observed with natural nanostructures or thin-film interferences. We highlight an unusual visual effect exhibiting only two distinct colors and theoretically investigate its origin. The approach can be useful in the design of visual appearance with easy-to-make and universal building blocks having a large resilience to fabrication imperfections and potential for innovative coatings and fine-art applications.Read less <
English Keywords
Metasurfaces
Visual appearance
BRDF
Colloidal monolayer
Structural color
Plasmonic nanoparticles
ANR Project
Surfaces nanostructurées complexes pour la conception de l'apparence visuelle - ANR-19-CE09-0014
University of Bordeaux Graduate Scholl in Light Sciences & Technologies - ANR-17-EURE-0027
University of Bordeaux Graduate Scholl in Light Sciences & Technologies - ANR-17-EURE-0027
Origin
Hal imported