Projects per year
Abstract
Localized surface plasmon resonances (LSPR) govern the optical properties of metallic nanoparticles at the nanoscale level and depend strongly on their shape, size and environment. When particles are a few nanometers apart, new plasmon modes, that can be either bright or dark, arise from the electromagnetic coupling of the plasmon modes of the individual nanoparticles. In the case of 3 gold nanorods assembled in a dolmen-like structure, a transmission window has been observed experimentally from 0.9 and 1.3 eV. It has been attributed to Fano interferences between a broad bright mode coming from the monomer and a narrow dark mode coming from the dimer. Because it is optically inactive, the latter has to be probed locally with an electron beam. This is why we investigate numerically the energy electron loss (EEL) response of coupled metallic nanorods together with their optical properties to get insight into the origin of these Fano resonances. To achieve this, calculations are performed in the frame of the discrete dipole approximation both for optical and EEL excitations.
Original language | English |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 8096 |
DOIs | |
Publication status | Published - 1 Jan 2011 |
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Projects
- 1 Finished
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Réponse électromagnétique et perte d'énergie d'électrons de systèmes plasmoniques couplés
GUILLAUME, S. & Henrard, L.
1/10/10 → 30/09/14
Project: PHD
Activities
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Raoul ARENAL de la CONCHA
Luc Henrard (Host)
9 Dec 2013 → 13 Dec 2013Activity: Hosting a visitor types › Hosting an academic visitor
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"March" meeting -- homage to Prof. Norman H. March
Luc Henrard (Speaker)
23 Nov 2013Activity: Participating in or organising an event types › Participation in workshop, seminar, course
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Recent Advances in Spectromicroscopy: Experimental and Theoretical Tools
Luc Henrard (Speaker)
4 Sep 2013 → 6 Sep 2013Activity: Participating in or organising an event types › Participation in conference