Applications of plasmonic oligomers, metamaterials, and nanoantennas
Harald Giessen
4th Physics Institute, University of Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart, Germany
Email: giessen@physik.uni-stuttgart.de
We present an overview of 2D and 3D plasmonic oligomers [1], metamaterials, and nanoantennas
which are utilized for different purposes. Stacked 3D metamaterials can be used as perfect absorbers,
which give angle and polarization independent absorption beyond 90% in the visible and near-infrared
region [2]. Utilizing transition metals as well as plasmonic induced transparency schemes [3], the
application of sensors for liquids and gases becomes feasible [4]. Cavity enhancement allows for
tailoring the spectral resonances of plasmonic systems and results in very high figures of merit for the
sensor schemes [5,6]. Arranging plasmonic substructures in 3D geometries, chirality can result as
optical property [7]. Using this method allows for the construction of novel broadband circular
polarizers with large angle acceptance angles. Nanoantennas can aid the sensing and nonlinear
properties of plasmonic nanostructures as well. We are going to discuss applications in this area as
well.
References
[1] Transition from isolated to collective modes in plasmonic oligomers
M. Hentschel, M. Saliba, R. Vogelgesang, H. Giessen, A. P. Alivisatos, and N. Liu
Nano Lett. 10, 2721 (2010).
[2] Infrared perfect absorber and its application as plasmonic sensor
N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen
Nano Lett. 10, 2342 (2010).
[3] Planar metamaterial analog of electromagnetically induced transparency for plasmonic sensing
N. Liu, T. Weiss, M. Mesch, L. Langguth, U. Eigenthaler, M. Hirscher, C. Sönnichsen, and H. Giessen
Nano Lett. 10, 1103 (2010).
[4] Hydrogen sensor based on metallic photonic crystal slabs
D. Nau, A. Seidel, R.B. Orzekowsky, S.-H. Lee, S. Deb, and H. Giessen
Opt. Lett. 35, 3150 (2010).
[5] Cavity plasmonics: Large normal mode splitting of electric and magnetic particle plasmons induced by a photonic microcavity
R. Ameling and H. Giessen
Nano Lett. 10, 4394 (2010).
[6] Cavity-enhanced localized plasmon resonance sensing
R. Ameling, L. Langguth, M. Hentschel, M. Mesch, P. V. Braun, and H. Giessen
Appl. Phys. Lett. 97, 253116 (2011).
[7] Coupling effects in optical metamaterials
N. Liu and H. Giessen
Angew. Chemie Int. Ed. 49, 9838 (2010).