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)