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Spatially Modulated Two-Photon Luminescence from Si−Au Core−Shell Nanowires

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    Spatially Modulated Two-Photon Luminescence from Si−Au Core−Shell Nanowires
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    † Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
    ‡ Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
    § Department of Physics, Purdue University, West Lafayette, Indiana 47907, United States
    *E-mail: (J.-X.C.)[email protected], (C.Y.) [email protected]
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    The Journal of Physical Chemistry C

    Cite this: J. Phys. Chem. C 2011, 115, 8, 3198–3202
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    https://doi.org/10.1021/jp1079179
    Published February 4, 2011
    Copyright © 2011 American Chemical Society
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    Si−Au core−shell nanowires were synthesized with a two-step strategy combining chemical vapor deposition and wet chemistry methods. Si core diameter, Au shell thickness, and wire length were controlled during synthesis. Under a far-field two-photon excitation scanning microscope, spatially modulated two-photon luminescence (TPL) was observed from the core−shell nanowires prepared with several micrometers in length. The mode spacing scales linearly with the length of nanowires for samples with 15 and 40 nm Au shells. The spatial modulation pattern was found to be independent of the excitation wavelength. The TPL intensity displayed a cos2 dependence on the excitation field polarization, indicating a sequential two-photon excitation process enhanced by the longitudinal plasmon field. The spatially modulated TPL is interpreted by a standing wave model of surface plasmon polaritons along the core−shell nanowire which acts as a Fabry−Pérot resonator. These results suggest TPL imaging of Si−Au core−shell nanowires as a new system providing useful insights regarding a plasmonic wave in a 1-D nanostructure.

    Copyright © 2011 American Chemical Society

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    This article is cited by 6 publications.

    1. Corban G. E. Murphey, Jin-Sung Park, Seokhyoung Kim, James F. Cahoon. Epitaxially Grown Silicon Nanowires with a Gold Molecular Adhesion Layer for Core/Shell Structures with Compact Mie and Plasmon Resonances. ACS Nano 2023, 17 (21) , 21739-21748. https://doi.org/10.1021/acsnano.3c07157
    2. Kristina Jajcevic, Kaori Sugihara. Lipid Nanotubes as an Organic Template for an Electrically Conductive Gold Nanostructure Network. The Journal of Physical Chemistry B 2020, 124 (27) , 5761-5769. https://doi.org/10.1021/acs.jpcb.0c03805
    3. H.M. Shodja, C. Enzevaee, M.Yu. Gutkin. Interface effect on the formation of a dipole of screw misfit dislocations in an embedded nanowire with uniform shear eigenstrain field. European Journal of Mechanics - A/Solids 2015, 51 , 154-159. https://doi.org/10.1016/j.euromechsol.2014.12.006
    4. R. M. Abraham Ekeroth, M. Lester. Optical Properties of Silver-Coated Silicon Nanowires: Morphological and Plasmonic Excitations. Plasmonics 2013, 8 (3) , 1417-1428. https://doi.org/10.1007/s11468-013-9555-5
    5. Kosei Ueno, Hiroaki Misawa. Surface plasmon-enhanced photochemical reactions. Journal of Photochemistry and Photobiology C: Photochemistry Reviews 2013, 15 , 31-52. https://doi.org/10.1016/j.jphotochemrev.2013.04.001
    6. Ling Tong, Ji-Xin Cheng. Label-free imaging through nonlinear optical signals. Materials Today 2011, 14 (6) , 264-273. https://doi.org/10.1016/S1369-7021(11)70141-9
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    The Journal of Physical Chemistry C

    Cite this: J. Phys. Chem. C 2011, 115, 8, 3198–3202
    Click to copy citationCitation copied!
    https://doi.org/10.1021/jp1079179
    Published February 4, 2011
    Copyright © 2011 American Chemical Society
    Request reuse permissions

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