›› 2014, Vol. 23 ›› Issue (8): 84206-084206.doi: 10.1088/1674-1056/23/8/084206

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Multipole resonance in the interaction of a spherical Ag nanoparticle with an emitting dipole

刘加东a b, 宋峰a b, 张俊b, 刘淑静c, 王凤箫b, 王立超b   

  1. a TEDA Applied Physics School, Nankai University, Tianjin 300457, China;
    b School of Physics, Nankai University, Tianjin 300071, China;
    c School of Biomedical Engineering, Tianjin Medical University, Tianjin 300070, China
  • 收稿日期:2014-02-21 修回日期:2014-04-02 出版日期:2014-08-15 发布日期:2014-08-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61138004 and 61107068) and the National Basic Research Program of China (Grant No. 2012CB921904).

Multipole resonance in the interaction of a spherical Ag nanoparticle with an emitting dipole

Liu Jia-Dong (刘加东)a b, Song Feng (宋峰)a b, Zhang Jun (张俊)b, Liu Shu-Jing (刘淑静)c, Wang Feng-Xiao (王凤箫)b, Wang Li-Chao (王立超)b   

  1. a TEDA Applied Physics School, Nankai University, Tianjin 300457, China;
    b School of Physics, Nankai University, Tianjin 300071, China;
    c School of Biomedical Engineering, Tianjin Medical University, Tianjin 300070, China
  • Received:2014-02-21 Revised:2014-04-02 Online:2014-08-15 Published:2014-08-15
  • Contact: Song Feng E-mail:fsong@nankai.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61138004 and 61107068) and the National Basic Research Program of China (Grant No. 2012CB921904).

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摘要： The effect of multipole resonance in the interaction between a spherical metallic nanoparticle (MNP) and an emitting dipole is studied with the Mie theory. The results show that the absorption peak of the MNP with respect to the field of the emitting dipole is blue-shifted with the decrease of the spacing between MNP and emitting dipole due to the enhanced multipole resonance. At a short distance, the enhanced multipole terms of scattering are not obvious compared with the dipole term. For the decay rate of the emitting dipole, multipole resonance brings about the enhancement of it largely at short spacing. For the radiative decay rate, the behavior is quite different. The dipole term is dominant at a short spacing, and the multipole term is dominant at a larger spacing.

关键词: Mie theory, multipole resonance, absorption, decay rate

Abstract: The effect of multipole resonance in the interaction between a spherical metallic nanoparticle (MNP) and an emitting dipole is studied with the Mie theory. The results show that the absorption peak of the MNP with respect to the field of the emitting dipole is blue-shifted with the decrease of the spacing between MNP and emitting dipole due to the enhanced multipole resonance. At a short distance, the enhanced multipole terms of scattering are not obvious compared with the dipole term. For the decay rate of the emitting dipole, multipole resonance brings about the enhancement of it largely at short spacing. For the radiative decay rate, the behavior is quite different. The dipole term is dominant at a short spacing, and the multipole term is dominant at a larger spacing.

Key words: Mie theory, multipole resonance, absorption, decay rate

中图分类号:  (Diffraction and scattering)

  • 42.25.Fx
42.25.Bs (Wave propagation, transmission and absorption) 52.25.Tx (Emission, absorption, and scattering of particles) 78.20.Bh (Theory, models, and numerical simulation)