naa a22 4500 510816835 CHVBK 20180411083511.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11468-013-9484-3 doi (NATIONALLICENCE)springer-10.1007/s11468-013-9484-3 Enhanced Single-Molecule Spontaneous Emission in an Optimized Nanoantenna with Plasmonic Gratings [Elektronische Daten] [Hongming Shen, Guowei Lu, Tianyue Zhang, Jie Liu, Qihuang Gong] In this study, we theoretically investigated the single-molecule fluorescence enhancement in a slit-groove structure. The excitation field enhancement, modified quantum efficiency, collection efficiency, and position dependence of a single-molecule spontaneous emission coupled to a plasmonic antenna are explored together. Simulation results revealed that the metal gratings play a crucial role in strengthening the local electromagnetic field enhancement in the excitation process and beaming the radiation light into a tiny angular volume in the emission process, whereas the total radiative decay rate and quantum efficiency are mainly determined by the slit cavity. Our findings provide an intuitive guideline to further optimize the plasmonic antenna for single-molecule detection and the results make a promising route to the development of photonic devices for the manipulation of single-molecule spontaneous emission. Springer Science+Business Media New York, 2013 Nanoantennas nationallicence Single molecule nationallicence Fluorescence enhancement nationallicence Emission directivity nationallicence Plasmonic gratings nationallicence Shen Hongming State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut Lu Guowei State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut Zhang Tianyue State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut Liu Jie State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut Gong Qihuang State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 869-875 1557-1955 8:2<869 2013 8 11468 https://doi.org/10.1007/s11468-013-9484-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11468-013-9484-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shen Hongming State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut NATIONALLICENCE 700 1- Lu Guowei State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut NATIONALLICENCE 700 1- Zhang Tianyue State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut NATIONALLICENCE 700 1- Liu Jie State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut NATIONALLICENCE 700 1- Gong Qihuang State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, 100871, Beijing, China aut NATIONALLICENCE 773 0- Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 869-875 1557-1955 8:2<869 2013 8 11468 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer