Reverse saturable scattering of a single gold nanoparticle

Hsuan Lee; Hsueh-Yu Wu; Yen-Ta Huang; Tung-Yu Su; Yasuo Yonemaru; Masahito Yamanaka; Ryosuke Oketani; Satoshi Kawata; Satoru Shoji; Katsumasa Fujita; Shi-Wei Chu

doi:10.1117/12.2039107

4 March 2014 Reverse saturable scattering of a single gold nanoparticle

Hsuan Lee, Hsueh-Yu Wu, Yen-Ta Huang, Tung-Yu Su, Yasuo Yonemaru, Masahito Yamanaka, Ryosuke Oketani, Satoshi Kawata, Satoru Shoji, Katsumasa Fujita, Shi-Wei Chu

Author Affiliations +

Proceedings Volume 8950, Single Molecule Spectroscopy and Superresolution Imaging VII; 895017 (2014) https://doi.org/10.1117/12.2039107
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

Recently, we discovered, for the first time, reverse saturable scattering in a single gold nanoparticle. When incident intensity increases, the scattering intensity dependence of 80-nm gold nanoparticles evolves from linear, to saturation, and to reverse saturation sequentially. The intensity dependence in reverse saturable scattering region is significantly steeper than that in the linear region. With the aid of a confocal microscope, the full width half maximum of the single-particle point spread function can be reduced down to 80 nm, which is beyond the diffraction limit. Our finding shows great potential for superresolution imaging application without bleaching.

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Hsuan Lee, Hsueh-Yu Wu, Yen-Ta Huang, Tung-Yu Su, Yasuo Yonemaru, Masahito Yamanaka, Ryosuke Oketani, Satoshi Kawata, Satoru Shoji, Katsumasa Fujita, and Shi-Wei Chu "Reverse saturable scattering of a single gold nanoparticle", Proc. SPIE 8950, Single Molecule Spectroscopy and Superresolution Imaging VII, 895017 (4 March 2014); https://doi.org/10.1117/12.2039107

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KEYWORDS

Scattering

Plasmonics

Gold

Absorption

Confocal microscopy

Laser scattering

Nanoparticles

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