title: A single particle plasmon resonance study of 3D conical nanoantennas.
abstract: Metallic nanocones are well-suited optical antennas for near-field microscopy and spectroscopy, exhibiting a number of different plasmonic modes. A major challenge in using nanocones for many applications is maximizing the signal at the tip while minimizing the background from the base. It is shown that nanocone plasmon resonance properties can be shifted over a wide range of wavelengths by variation of the substrate, material, size and shape, enabling potential control over specific modes and field distributions. The individual resonances are identified and studied by correlated single particle dark field scattering and scanning electron microscopy in combination with numerical simulations.
authors.affiliation: Eberhard Karls Universität Tübingen, Institute for Applied Physics and Center LISA+, Auf der Morgenstelle 10, 72076 Tübingen, Germany. Christian.schaefer@uni-tuebingen.de
authors.forename: Christian
authors.initials: C
authors.lastname: Schäfer
authors.forename: Dominik A
authors.initials: DA
authors.lastname: Gollmer
authors.forename: Andreas
authors.initials: A
authors.lastname: Horrer
authors.forename: Julia
authors.initials: J
authors.lastname: Fulmes
authors.forename: Alexander
authors.initials: A
authors.lastname: Weber-Bargioni
authors.forename: Stefano
authors.initials: S
authors.lastname: Cabrini
authors.forename: P James
authors.initials: PJ
authors.lastname: Schuck
authors.forename: Dieter P
authors.initials: DP
authors.lastname: Kern
authors.forename: Monika
authors.initials: M
authors.lastname: Fleischer