Effects of refractive index of mixed solution on localized surface plasmon resonance

被引：1
|
作者：
机构：
[1] College of Opto-electric Science and Engineering, National University of Defense Technology
来源：
Zhang, Y. (k-zhang@163.com) | 1600年 / Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China卷 / 25期
关键词：
Localized surface plasmon resonance; Mass fraction; Optics at surface; Refractive index; Temperature;
D O I：
10.3788/HPLPB20132502.0500
中图分类号：
学科分类号：
摘要：
The relations of the mass fraction and temperature of mixtures of water and dimethyl sulphoxide (DMSO) to refractive index are theoretically and experimentally studied. The empirical formula fit for calculating the refractive index of the mixture is chosen by comparing the simulation results of several classical models. Then the effects of mass fraction and temperature of the mixture of aqueous gold colloids and DMSO on localized surface plasmon resonance are studied. The theoretical and experimental results show that the mass fraction of the mixture of aqueous gold colloids and DSMO has linear relationship with the resonance wavelength of localized surface plasmon in a large range. The resonance wavelength of the mixed gold colloids increases by 1367 pm when the temperature increases from 20°C to 60°C, and its temperature sensitivity is 34 pm/K. The increase of resonance wavelength with mass fraction is 8.5×103 pm in a 0-100% mass fraction range.
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页码：500 / 504
页数：4
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