An original theoretical approach offers new insights into the Fano resonances in plasmonic systems

A group of Laboratory Hubert Curien (UMR CNRS 5516) has developed an original theoretical approach that provides an insightful analysis of the mechanism at the origin of Fano resonances in plasmonic oligomers. It especially provides a clear demonstration of the role of coupling between magnetic and electric modes on the resulting resonance. This study was completed with an experimental work carried out in collaboration with the Molecular Foundry at Lawrence Berkeley National Laboratory (USA) and Fresnel Institute in Marseille. This work was supported by the LABEX MANUTECH-SISE (ANR-10-LABX-0075) of Université de Lyon, within the program “Investissements d’Avenir” (ANR-11-IDEX-0007) operated by the French National Research Agency (ANR). ANR is also supported this work in the framework of project PHOTOFLEX no. 12-NANO-0006. Work at Institut Fresnel has been carried out thanks to the support of the A*MIDEX project (no. ANR-11-IDEX-0001-02) funded by the Investissements d’Avenir French Government program managed by the French National Research Agency (ANR). Work at the Molecular Foundry was supported by the Director, Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. http://www.nature.com/articles/srep32061