Berlin 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 5: Plasmonics: Nanoantennas, Nanoparticles
O 5.7: Vortrag
Montag, 16. März 2015, 12:00–12:15, MA 042
Plasmon spectroscopy of metal nanoparticles — •Viktor Myroshnychenko1, Naoki Yamamoto2, Javier Garcia de Abajo3, and Jens Förstner1 — 1University of Paderborn, Paderborn, Germany — 2Physics Department, Tokyo Institute of Technology, Tokyo, Japan — 3ICFO-Institut de Ciencies Fotoniques, Castelldefels (Barcelona), Spain
The current interest in the optical properties of metal nanoparticles is due to their ability to host localized surface plasmon excitations in the visible and near-infrared parts of the spectrum [1]. The study of the electromagnetic field distributions associated to localized plasmon excitations in metal nanoparticles are of critical importance for applications. In this work, we use optical spectroscopy (which records light scattering exerted by the particles on externally incoming light) and cathodoluminescence (based on electron-induced radiation emission produced by interaction with an electron beam) to study plasmon excitations in sub-wavelength noble-metal nanoparticles [2]. We provide a theoretical description of these techniques and numerical modeling of the spectral features and spatially resolved maps of nanoparticle plasmon modes.
[1] N. J. Halas et al., Plasmons in strongly coupled metallic nanostructures, Chem. Rev. 111, 3913-3961, 2011.
[2] V. Myroshnychenko et al., Plasmon spectroscopy and imaging of individual gold nanodecahedra: A combined optical microscopy, cathodoluminescence, and electron energy-loss spectroscopy study, Nano Letters 12, 4172-4180, 2012.