Journal article
Plasmon–Phonon Coupling in Large-Area Graphene Dot and Antidot Arrays Fabricated by Nanosphere Lithography
Department of Photonics Engineering1
Center for Nanostructured Graphene (CNG)2
Department of Micro and Nanotechnology, DK-2800 Kongens Lyngby3
Department of Physics and Nanotechnology4
Department of Physics, Key Laboratory of Micro- and Nano-Photonic Structures (Ministry of Education) and State Key Laboratory of Surface Physics5
Nanostructured graphene on SiO2 substrates paves the way for enhanced light–matter interactions and explorations of strong plasmon–phonon hybridization in the mid-infrared regime. Unprecedented large-area graphene nanodot and antidot optical arrays are fabricated by nanosphere lithography, with structural control down to the sub-100 nm regime.
The interaction between graphene plasmon modes and the substrate phonons is experimentally demonstrated, and structural control is used to map out the hybridization of plasmons and phonons, showing coupling energies of the order 20 meV. Our findings are further supported by theoretical calculations and numerical simulations.
Language: | English |
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Publisher: | American Chemical Society |
Year: | 2014 |
Pages: | 2907-2913 |
ISSN: | 15306992 and 15306984 |
Types: | Journal article |
DOI: | 10.1021/nl500948p |