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

作　　者：李松权 叶红安 柳春郁 窦寅丰 黄妍 

机构地区：[1]School of Electronic Engineering,Heilongjiang University

出　　处：《Chinese Physics B》2013年第7期444-449,共6页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.61177079);the Young Scientists Fund of the National Natural Science Foundation of China(Grant No.61205071)

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.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 

分 类 号：O53[理学—等离子体物理] O484.1[理学—物理]