Journal article
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DNA‐mediated self‐assembly of plasmonic antennas with a single quantum dot in the hot spot
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Nicoli, Francesca
Faculty of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München (LMU), Munich, Germany
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Zhang, Tao
Faculty of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München (LMU), Munich, Germany
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Hübner, Kristina
Department of Chemistry and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München, Germany
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Jin, Boyuan
Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, United States
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Selbach, Florian
Department of Chemistry and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München, Germany
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Acuna, Guillermo P.
Department of Physics, University of Fribourg, Switzerland
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Argyropoulos, Christos
Department of Electrical and Computer Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska, United States
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Liedl, Tim
Faculty of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München (LMU), Munich, Germany
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Pilo-Pais, Mauricio
Faculty of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München (LMU), Munich, Germany
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Published in:
- Small. - 2019, vol. 15, no. 26, p. 1804418
English
DNA self‐assembly is a powerful tool to arrange optically active components with high accuracy in a large parallel manner. A facile approach to assemble plasmonic antennas consisting of two metallic nanoparticles (40 nm) with a single colloidal quantum dot positioned at the hot spot is presented here. The design approach is based on DNA complementarity, stoichiometry, and steric hindrance principles. Since no intermediate molecules other than short DNA strands are required, the structures possess a very small gap (≈ 5 nm) which is desired to achieve high Purcell factors and plasmonic enhancement. As a proof‐of‐concept, the fluorescence emission from antennas assembled with both conventional and ultrasmooth spherical gold particles is measured. An increase in fluorescence is obtained, up to ≈30‐fold, compared to quantum dots without antenna.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/308013
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