Towards reconfigurable control of all-dielectric optical metasurfaces
All-dielectric optical metasurfaces are more efficient than conventional plasmonic metasurfaces. However, the optical response of traditional dielectric-based metasurfaces is fixed by design. A far wider range of applications could be addressed if active/reconfigurable control was feasible. Combining high-index dielectric nanostructure arrays with chalcogenide phase-change materials is a promising all-dielectric reconfigurable metasurface approach. However, there are very few dielectric metasurface designs that incorporate phase-change materials, and those reported are switched ex-situ. The EU-funded DReM-PCM project aims to design and experimentally fabricate two reconfigurable all-dielectric phase-change metasurfaces with in-situ switching electrically realised by an integrated microheater and by a crossbar structure, respectively. It will also tune the optical response of the metasurfaces for potential optical applications, such as Lidar-type beam steering.
Fields of science
Call for proposalSee other projects for this call
Funding SchemeMSCA-IF-EF-RI - RI – Reintegration panel
EX4 4QJ Exeter
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