Optofluidic Control of Colours with Metasurfaces

authored by
Diane J. Roth, Izzatjon Allayarov, Andrey Evlyukhin, Boris Chichkov, Antonio Calà Lesina, Anatoly V. Zayats
Abstract

We demonstrate theoretically and experimentally dynamic tuning of optical response of dielectric metasurfaces based on the high-sensitivity of surface lattice resonances to their surrounding environment. This tuneability is achieved by controlling a dielectric permittivity contrast between the substrate and the superstrate, which leads to two different tuning mechanisms: a spectral shift or an on/off switching of surface lattice resonances. Experimentally, we demonstrate this tuning using an optofluidic platform combining a silicon metasurface on a glass substrate and a variable water level to control the refractive index of the superstrate and show a dynamic change of the optical response of the metasurface, manifested through change of its colouring. This concept may be applied for various applications, including high-resolution dynamic displays, sensing and anticounterfeiting protection.

Organisation(s)
Institute of Transport and Automation Technology
Hannover Centre for Optical Technologies (HOT)
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines
Institute of Quantum Optics
External Organisation(s)
King's College London
Type
Conference contribution
Pages
448-449
No. of pages
2
Publication date
2023
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Computer Networks and Communications, Electronic, Optical and Magnetic Materials, Surfaces, Coatings and Films, Instrumentation
Electronic version(s)
https://doi.org/10.1109/Metamaterials58257.2023.10289626 (Access: Closed)