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Short-range plasmon guides, resonators and antennas imaged by non-linear photoemission electron microscopy

Abstract : The exploitation of plasmonic local field enhancements to promote the local interactions between matter and optical fields motivates numerous researches. The objectives are to understand the mechanisms of plasmon-mediated interactions, and to realize molecularly- or atomically-precise nano-structures favouring such phenomena. We have developed a local-probe-free experiment (M-PEEM [1]) to map the electromagnetic field at the nanoscale close to metal structures. The analysis of the optical response of various metal nano-objects shows evidences of the excitation of so-called “short-range” propagative modes, strongly coupled to a metal nano-wire and highly localized around it at subwavelength scales.[2] After a detailed study of the characteristics of these modes, we have been able to design specific metal nano-objects exhibiting diverse functions such as antenna and local field enhancements. These model systems also gave new insights in the enhanced molecule-field interactions observed in the insulating gap of a scanning tunneling microscope [3-7]
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https://hal-utt.archives-ouvertes.fr/hal-02448416
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Submitted on : Wednesday, January 22, 2020 - 12:03:40 PM
Last modification on : Wednesday, January 29, 2020 - 5:46:10 PM

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Ludovic Douillard, Céline Fiorini, Fabrice Charra, Pierre-Michel Adam, Renaud Bachelot, et al.. Short-range plasmon guides, resonators and antennas imaged by non-linear photoemission electron microscopy. 2009 3rd ICTON Mediterranean Winter Conference (ICTON-MW 2009), Dec 2009, Angers, France. pp.1-1, ⟨10.1109/ICTONMW.2009.5385565⟩. ⟨hal-02448416⟩

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