中国物理B ›› 2003, Vol. 12 ›› Issue (1): 100-106.doi: 10.1088/1009-1963/12/1/319

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Optical resonance of metal-coated nanoshell

刁佳杰1, 陈光德2, 苑进社2, Z Y Fan3, 席 聪4   

  1. (1)Department of Applied Physics, Xi'an Jiaotong University,Xi'an 710049, China; (2)Department of Applied Physics, Xi'an Jiaotong University,Xi'an 710050, China; (3)Department of Physics, Kansas State University, Manhattan, Kansas 66506-2601, USA; (4)School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China
  • 收稿日期:2002-03-11 修回日期:2002-06-28 出版日期:2003-01-20 发布日期:2003-01-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 19874049).

Optical resonance of metal-coated nanoshell

Diao Jia-Jie (刁佳杰)a, Chen Guang-De (陈光德)a,  Xi Cong (席 聪)b, Z Y Fanc, Yuan Jin-She (苑进社)a   

  1. a Department of Applied Physics, Xi'an Jiaotong University,Xi'an 710049, China; b School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China; c Department of Physics, Kansas State University, Manhattan, Kansas 66506-2601, USA
  • Received:2002-03-11 Revised:2002-06-28 Online:2003-01-20 Published:2003-01-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 19874049).

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摘要： Metal-coated nanoshell, the nanoparticle consisting of a nanometre-scale dielectric core coated with a thin metallic shell, exhibits three distinct optical resonant forms, the sphere cavity resonance (SCR), plasmon resonance (PR), and concentric dielectric sphere resonance (CDSR). The SCR, PR and CDSR of the metal-coated nanoshell reveal a geometric tunability controlled by the core radius and by the ratio of the core radius to the total radius. Classical electrodynamics and Mie scattering theory are used to treat the resonant forms and the transition state between the resonant forms. Based on previous experimental research, we present a group of resonant equations for all the resonant forms, which depend on the geometric structure of the metal-coated nanoshell.

Abstract: Metal-coated nanoshell, the nanoparticle consisting of a nanometre-scale dielectric core coated with a thin metallic shell, exhibits three distinct optical resonant forms, the sphere cavity resonance (SCR), plasmon resonance (PR), and concentric dielectric sphere resonance (CDSR). The SCR, PR and CDSR of the metal-coated nanoshell reveal a geometric tunability controlled by the core radius and by the ratio of the core radius to the total radius. Classical electrodynamics and Mie scattering theory are used to treat the resonant forms and the transition state between the resonant forms. Based on previous experimental research, we present a group of resonant equations for all the resonant forms, which depend on the geometric structure of the metal-coated nanoshell.

Key words: metal-coated nanoshell, optical resonance, resonant wavelength, skin effect

中图分类号:  (Nanocrystals, nanoparticles, and nanoclusters)

  • 78.67.Bf
42.65.-k (Nonlinear optics)