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We study hybrid metasurfaces, where the meta-atoms are combining high index dielectrics with plasmonics metals. This way, we can exploit the coupling between electric and magnetic effects to produce unusual optical responses in the linear and nonlinear regimes. High aspect ratio meta-atoms are required to enhance this magneto-electric coupling, which necessitated the development of a suitable nanotechnology based on the physical etching of the meta-atoms, instead of the more common lift-off approach. The multipolar response of these metasurfaces is also characterized in detail with electromagnetic simulations in order to guide and interpret the experimental results.
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