Studies on the Sensitivity of a Wavelength-dependent SPR Sensor

Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (11): 2157.

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Studies on the Sensitivity of a Wavelength-dependent SPR Sensor

LI Hai-Bo, XU Shu-Ping, LIU Yu, JIAN Xiao-Guang, XU Wei-Qing*

State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China

Received:2010-05-10 Online:2010-11-10 Published:2010-11-10
Contact: XU Wei-Qing. E-mail: xuwq@jlu.edu.cn
Supported by:
国家自然科学基金(批准号: 20903043, 20973075, 20773045)和高等学校博士学科点专项科研课题(批准号: 20090061120089)资助.

Abstract

Abstract: A wavelength-dependent surface plasmon resonance(SPR) sensor with tunable incident angles was designed and constructed. The resonance curves of sucrose solutions at different concentrations were measured under different incident angles(80°—66°). Several 3-dimensional(3D) maps were obtained through the experiment data, which reflects the evolution of the resonance wavelength, full width at half maximum(FWHM) and sensitivity as functions of refractive index and incident angle. The quality of the wavelength-dependent SPR sensor was systematically discussed via the theoretical simulation and experimental data. It indicates that the sensitivity increases rapidly with the red-shift of resonance wavelength. Through these 3D maps, the resonant wavelength, FWHM and sensitivity of analyses can be predicted. These 3D maps could give suggestions to the design and construction of wavelength-dependent SPR devices.

Key words: Surface plasmon resonance(SPR), Wavelength-dependent SPR sensor, Sensitivity, Incident angle, Resonance wavelength

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LI Hai-Bo, XU Shu-Ping, LIU Yu, JIAN Xiao-Guang, XU Wei-Qing*. Studies on the Sensitivity of a Wavelength-dependent SPR Sensor[J]. Chem. J. Chinese Universities, 2010, 31(11): 2157.

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Studies on the Sensitivity of a Wavelength-dependent SPR Sensor

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