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Issue 35, 2015
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Self-aligned placement and detection of quantum dots on the tips of individual conical plasmonic nanostructures

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Abstract

Hybrid structures of few or single quantum dots (QDs) coupled to single optical antennas are of prime interest for nano-optical research. The photoluminescence (PL) signal from single nanoemitters, such as QDs, can be enhanced, and their emission characteristics modified, by coupling them to plasmonic nanostructures. Here, a self-aligned technique for placing nanoscale QDs with about 10 nm lateral accuracy and well-defined molecular distances to the tips of individual nanocones is reported. This way the QDs are positioned exactly in the high near-field region that can be created near the cone apex. The cones are excited in the focus of a radially polarized laser beam and the PL signal of few or single QDs on the cone tips is spectrally detected.

Graphical abstract: Self-aligned placement and detection of quantum dots on the tips of individual conical plasmonic nanostructures

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Publication details

The article was received on 29 May 2015, accepted on 22 Jul 2015 and first published on 17 Aug 2015


Article type: Paper
DOI: 10.1039/C5NR03546E
Citation: Nanoscale, 2015,7, 14691-14696
  • Open access: Creative Commons BY-NC license
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    Self-aligned placement and detection of quantum dots on the tips of individual conical plasmonic nanostructures

    J. Fulmes, R. Jäger, A. Bräuer, C. Schäfer, S. Jäger, D. A. Gollmer, A. Horrer, E. Nadler, T. Chassé, D. Zhang, A. J. Meixner, D. P. Kern and M. Fleischer, Nanoscale, 2015, 7, 14691
    DOI: 10.1039/C5NR03546E

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