Acta Physica Sinica, Volume. 69, Issue 18, 184206-1(2020)

Tuning optical force of dielectric/metal core-shell placed above Au film

Jia-Chen Zhang1... Wei-Xing Yu2, Fa-Jun Xiao1,* and Jian-Lin Zhao2 |Show fewer author(s)
Author Affiliations
  • 1Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, China
  • 2CAS Key Laboratory of Spectral Imaging Technology, Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an 710119, China
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    Figures & Tables(6)
    Schematic diagram of a dielectric/metal core-shell placed above a gold film.
    (a) Scheme of plasmon hybridization picture of the core-shell on gold film; (b) scattering spectrum of core-shell particles on gold film. The inset of panel (b) shows the z-component of the electric field in xy plane.
    (a) Longitudinal optical force Fz exerted on the core-shell on gold film. The electric-field intensity enhancement factor map of the core-shell on gold film at wavelengths of (b) 540, (c) 670, (d) 790, and (e) 830 nm, respectively.
    (a) Scattering spectra of the core-shell on gold film; (b) longitudinal optical force spectra of the core-shell on gold film; (c) maximum longitudinal optical force and the average electric-field intensity enhancement factor as a function of gap size for the core-shell on gold film.
    (a) Scattering spectra of the core-shell on gold film; (b) longitudinal optical force spectra of the core-shell on gold film; (c) maximum longitudinal optical force as well as the average electric-field intensity enhancement factor as a function of dielectric core radius for the core-shell on gold film.
    (a) Scattering spectra of the core-shell on gold film; (b) longitudinal optical force spectra of the core-shell on gold film; (c) maximum longitudinal optical force and the average electric-field intensity enhancement factor as a function of index for the core-shell on gold film.
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    Jia-Chen Zhang, Wei-Xing Yu, Fa-Jun Xiao, Jian-Lin Zhao. Tuning optical force of dielectric/metal core-shell placed above Au film[J]. Acta Physica Sinica, 2020, 69(18): 184206-1

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    Paper Information

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    Received: Feb. 13, 2020

    Accepted: --

    Published Online: Jan. 5, 2021

    The Author Email:

    DOI:10.7498/aps.69.20200214

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