中国物理B ›› 2013, Vol. 22 ›› Issue (7): 77302-077302.doi: 10.1088/1674-1056/22/7/077302

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Low-cost, high performance surface plasmon resonance-compatible films characterized by surface plasmon resonance technique

李松权, 叶红安, 柳春郁, 窦寅丰, 黄妍   

  1. School of Electronic Engineering, Heilongjiang University, Harbin 150080, China
  • 收稿日期:2012-12-25 修回日期:2013-01-18 出版日期:2013-06-01 发布日期:2013-06-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61177079) and the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 61205071).

Low-cost, high performance surface plasmon resonance-compatible films characterized by surface plasmon resonance technique

Li Song-Quan (李松权), Ye Hong-An (叶红安), Liu Chun-Yu (柳春郁), Dou Yin-Feng (窦寅丰), Huang Yan (黄妍)   

  1. School of Electronic Engineering, Heilongjiang University, Harbin 150080, China
  • Received:2012-12-25 Revised:2013-01-18 Online:2013-06-01 Published:2013-06-01
  • Contact: Ye Hong-An E-mail:yehonganhlj@gmail.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61177079) and the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 61205071).

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摘要： A new analytical method based on the surface plasmon resonance (SPR) technique is presented, with which SPR curves for both wavelength and angular modulations can be obtained simultaneously via only a single scan of the incident angle. Using this method, the SPR responses of TiO2-coated Cu films are characterized in the wavelength range from 600 nm to 900 nm. For the first time, we determine the effective optical constants and the thicknesses of TiO2-coated Cu films using the SPR curves of wavelength modulation. The sensitivities of prism-based SPR refractive index sensors using TiO2-coated Cu films are investigated theoretically for both wavelength and angular modulations, the results show that in the case of sensitivity with wavelength modulation, TiO2-coated Cu films are not as good as the Au film, however, they are more suitable than the Au film for SPR refractive index sensors with angular modulation because a higher sensitivity can be achieved.

关键词: surface plasmon resonance, optical constants, thin film

Abstract: A new analytical method based on the surface plasmon resonance (SPR) technique is presented, with which SPR curves for both wavelength and angular modulations can be obtained simultaneously via only a single scan of the incident angle. Using this method, the SPR responses of TiO2-coated Cu films are characterized in the wavelength range from 600 nm to 900 nm. For the first time, we determine the effective optical constants and the thicknesses of TiO2-coated Cu films using the SPR curves of wavelength modulation. The sensitivities of prism-based SPR refractive index sensors using TiO2-coated Cu films are investigated theoretically for both wavelength and angular modulations, the results show that in the case of sensitivity with wavelength modulation, TiO2-coated Cu films are not as good as the Au film, however, they are more suitable than the Au film for SPR refractive index sensors with angular modulation because a higher sensitivity can be achieved.

Key words: surface plasmon resonance, optical constants, thin film

中图分类号:  (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

  • 73.20.Mf
78.20.-e (Optical properties of bulk materials and thin films)