Thermal-induced surface plasmon band shift of gold nanoparticle monolayer: morphology and refractive index sensitivity

2010 ◽  
Vol 21 (46) ◽  
pp. 465702 ◽  
Author(s):  
Xuemin Zhang ◽  
Junhu Zhang ◽  
Huan Wang ◽  
Yudong Hao ◽  
Xun Zhang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Surface Plasmon Band ◽  
Refractive Index Sensitivity ◽  
Band Shift ◽  
Plasmon Band ◽  
Index Sensitivity

Low Electric Field Intensity and Thermotropic Tuning Surface Plasmon Band Shift of Gold Island Film by Liquid Crystals

2012 ◽  
Vol 116 (4) ◽  
pp. 2720-2727 ◽  
Author(s):  
Jing Xie ◽  
Xuemin Zhang ◽  
Zenghui Peng ◽  
Zhanhua Wang ◽  
Tieqiang Wang ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Electric Field ◽  
Surface Plasmon ◽  
Field Intensity ◽  
Electric Field Intensity ◽  
Island Film ◽  
Surface Plasmon Band ◽  
Band Shift ◽  
Plasmon Band

Effects of Grating Slant Angle on Surface Plasmon Resonance and its Applications for Sensors

2014 ◽  
Vol 536-537 ◽  
pp. 342-345 ◽  
Author(s):  
Xue Hui Xiong ◽  
La Min Zhan ◽  
Xuan Ke
Keyword(s):  
Refractive Index ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Momentum Conservation ◽  
Refractive Index Sensitivity ◽  
Coupling Condition ◽  
Optical Wave ◽  
Slant Angle ◽  
Index Sensitivity

In this study, we emphasized on effects of grating slant angle of tilted dielectric gratings (TG) on surface plasmon resonance (SPR). The momentum conservation for an optical wave exciting an SPR via TG is different from unslant gratings. The coupling condition induces the period along the grating surface (in the direction x) be decided not only by grating period but also by slant angle. The results calculated by rigorous coupled-wave analysis theory (RCWA) indicate that the resonant wavelength and the refractive index sensitivity are strongly dependent on the period in the direction x (noted Λx). And the refractive index sensitivity increases with the rise of the period Λx. The SPR sensor through TG offers high sensitivity about 800nm per refractive index unit and narrow full-width at half maximum (FWHM) about 5nm when monitoring biochemical liquid solutions.

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