High-Resolution Imaging of Electric Field Enhancement and Energy-Transfer Quenching by a Single Silver Nanowire Using QD-Modified AFM Tips

    Authors

    Z. Liu; A. M. Ricks; H. N. Wang; N. H. Song; F. R. Fan; S. L. Zou;T. Q. Lian

    Comments

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    Abbreviated Journal Title

    J. Phys. Chem. Lett.

    Keywords

    GOLD NANOPARTICLES; QUANTUM DOTS; RAMAN-SCATTERING; MICROSCOPY; PLASMONS; EMISSION; NANOSTRUCTURES; BLINKING; ANTENNAS; SENSORS; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, ; Multidisciplinary; Physics, Atomic, Molecular & Chemical

    Abstract

    Plasmonic nanostructures can profoundly affect the optical properties of light absorbers and emitters. Using quantum dot-modified-atomic force microscopy (AFM) tips as a nanoscale light source, the topological features of a Ag nanowire and its effect on the fluorescence intensity and lifetime of the QDs can be simultaneously imaged with AFM spatial resolution. Modeling of the QD-nanowire interaction and the contrasts in the fluorescence intensity and lifetime images suggests that this novel method can be used for direct high-resolution mapping of the electric field distributions and energy-transfer quenching near metallic nanostructures.

    Journal Title

    Journal of Physical Chemistry Letters

    Volume

    4

    Issue/Number

    14

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    2284

    Last Page

    2291

    WOS Identifier

    WOS:000322150000008

    ISSN

    1948-7185

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