Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 85: Plasmonics and nanooptics V
O 85.3: Vortrag
Freitag, 30. März 2012, 11:00–11:15, MA 005
Three-dimensional chiral plasmonic oligomers — •Mario Hentschel1,2, Martin Schäferling1, Thomas Weiss1, Hans-Georg Kuball3, Na Liu4, and Harald Giessen1 — 14. Physikalisches Institut und Research Center SCoPE, Universität Stuttgart — 2Max-Planck-Institut für Festkörperforschung, Stuttgart — 3Fachbereich Chemie, Lehrstuhl für Physikalische Chemie, Universität Kaiserslautern — 4Department of Electrical and Computer Engineering, Rice University
We demonstrate a chiral optical response in stacked arrangements of plasmonic nanostructures. They exhibit resonant plasmonic coupling between particles of similar size and dipole moment. Moreover, we demonstrate that such particle ensembles possess the capability to encode their three-dimensional arrangement in unique and well modulated spectra, making then ideal candidates for a three-dimensional chiral plasmonic ruler [1]. Our results are crucial for the future design and improvement of plasmonic chiral optical systems, e.g., for ultrasensitive enatiomer sensing on the single molecule level [2], for the design of chiral optical modulators and devices [3] as well as applications in medicine and drug development.
[1] Liu, N. et al., Science 332, 1407-1410 (2011).
[2] Hendry, E. et al., Nat. Nanotech. 5, 783-787 (2010).
[3] Gansel, J. K. et al., Science 325, 1513-1515 (2009).