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Advanced Materials

Transient Enhancement and Spectral Narrowing of The Photothermal Effect of Plasmonic Nanoparticles Under Pulsed Excitation

Authors

  • Ekaterina Y. Lukianova-Hleb,

    1. Departments of Biochemistry and Cell Biology, Rice University, Houston, TX 77005, USA
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  • Alexey N. Volkov,

    1. Department of Materials Science and Engineering, University of Virginia, Charlottesville, VA 22904-4745, USA
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  • Xiangwei Wu,

    1. Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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  • Dmitri O. Lapotko

    Corresponding author
    1. Department of Biochemistry and Cell Biology, Department of Physics and Astronomy, Rice University, 6100 Main, MS-140, Houston, TX 77005, USA, Phone: 713-348-3708, Fax: 713-348-5154
    • Department of Biochemistry and Cell Biology, Department of Physics and Astronomy, Rice University, 6100 Main, MS-140, Houston, TX 77005, USA, Phone: 713-348-3708, Fax: 713-348-5154.
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Abstract

The transient 100-fold enhancement and spectral narrowing to 2 nm of the photothermal conversion by solid gold nanospheres under near-infrared excitation with a short laser pulse is reported. This non-stationary effect was observed for a wide range of optical fluences starting from 10 mJ cm−2 for single nanospheres, their ensembles and aggregated clusters in water, in vitro and in vivo.

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