CC BY-NC 3.0 UnportedMayer, MartinTebbe, MoritzKuttner, ChristianSchnepf, Max J.König, Tobias A. F.Fery, Andreas2022-05-102022-05-102016https://oa.tib.eu/renate/handle/123456789/8917https://doi.org/10.34657/7955We demonstrate a template-assisted colloidal self-assembly approach for magnetic metasurfaces on macroscopic areas. The choice of anisotropic colloidal particle geometry, assembly pattern and metallic film is based on rational design criteria, taking advantage of mirror-charge effects for gold nanorods placed on gold film. Monodisperse gold nanorods prepared utilizing wet-chemistry are arranged with high precision on wrinkled templates to form linear array-type assemblies and subsequently transferred to a thin gold film. Due to the obtained particle-to-film distance of 1.1 nm, the plasmonic mode of the nanorod is able to couple efficiently with the supporting metallic film, giving rise to a magnetic mode in the visible spectrum (721 nm). Conventional UV-vis-NIR measurements in close correlation with electromagnetic simulations provide evidence for the presence of a magnetic resonance on the macroscopic area. The herein presented scalable lithography-free fabrication process paves the road towards colloidal functional metasurfaces with an optical response in the effective magnetic permeability.enghttps://creativecommons.org/licenses/by-nc/3.0/540negative-index metamaterialgold nanorodsoptical-propertiesresonatorsresonancegrowthmodesnanoparticlesnanoscalepatternsBookPart