caa a22 4500 528785729 20190713030954.0 cr unu---uuuuu 180924s2015 xx s 000 0 eng 10.3929/ethz-b-000107509 doi 10.1038/ncomms9969 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/107509 Highly tunable hybrid metamaterials employing split-ring resonators strongly coupled to graphene surface plasmons [Elektronische Daten] [Peter Q. Liu, Isaac J. Luxmoore, Sergey A. Mikhailov, Nadja A. Savostianova, Federico Valmorra, Jérome; id_orcid 0000-0003-4429-7988 Faist, Geoffrey R. Nash] Nat Commun Open access ethresearch Metamaterials and plasmonics are powerful tools for unconventional manipulation and harnessing of light. Metamaterials can be engineered to possess intriguing properties lacking in natural materials, such as negative refractive index. Plasmonics offers capabilities of confining light in subwavelength dimensions and enhancing light-matter interactions. Recently, the technological potential of graphene-based plasmonics has been recognized as the latter features large tunability, higher field-confinement and lower loss compared with metal-based plasmonics. Here, we introduce hybrid structures comprising graphene plasmonic resonators coupled to conventional split-ring resonators, thus demonstrating a type of highly tunable metamaterial, where the interaction between the two resonances reaches the strong-coupling regime. Such hybrid metamaterials are employed as high-speed THz modulators, exhibiting ∼60% transmission modulation and operating speed in excess of 40 MHz. This device concept also provides a platform for exploring cavity-enhanced light-matter interactions and optical processes in graphene plasmonic structures for applications including sensing, photo-detection and nonlinear frequency generation. Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 ethresearch Liu Peter Q. joint author Luxmoore Isaac J. joint author Mikhailov Sergey A. joint author Savostianova Nadja A. joint author Valmorra Federico joint author Faist Jérome; id_orcid 0000-0003-4429-7988 joint author Nash Geoffrey R. joint author Nature Communications London : Nature Publishing Group 6, p. 8969 2041-1723 http://hdl.handle.net/20.500.11850/107509 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/107509 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 700 1- Liu Peter Q. joint author ETHRESEARCH 700 1- Luxmoore Isaac J. joint author ETHRESEARCH 700 1- Mikhailov Sergey A. joint author ETHRESEARCH 700 1- Savostianova Nadja A. joint author ETHRESEARCH 700 1- Valmorra Federico joint author ETHRESEARCH 700 1- Faist Jérome; id_orcid 0000-0003-4429-7988 joint author ETHRESEARCH 700 1- Nash Geoffrey R. joint author ETHRESEARCH 773 0- Nature Communications London : Nature Publishing Group 6, p. 8969 2041-1723 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access