NDLI: Spectral Phase Shift of Surface Plasmon Resonance in the Kretschmann Configuration: Theory and Experiment

Content Provider	Springer Nature Link
Author	Hlubina, Petr Ciprian, Dalibor
Copyright Year	2016
Abstract	The spectral phase shift of surface plasmon resonance (SPR) in the Kretschmann configuration is modeled for aqueous solutions of NaCl (analytes) and an SPR structure consisting of gold and chromium layers deposited on an SF10 glass slide. Using the material dispersion of the SPR structure and the analyte, the SPR phase shift, its spectral derivative, and the spectral dependence of the ratio of the reflectances of p- and s-polarized waves are determined for aqueous solutions of NaCl when the concentration of NaCl in water and the refractive index range from 0 to 10 weight percent (wt%) and from 1.3334 to 1.3515 RIU, respectively. In addition, theoretical modeling is accompanied by experiment and the position of a sharp maximum in the measured spectral derivative of the SPR phase shift changes in a range from 596 to 626 nm. From the measurements, a sensitivity to concentration of 3.83 nm/wt% and a detection limit of 7.3 × 10$^{−7}$ RIU at a wavelength of 612.36 nm are obtained, and very good agreement between theory and experiment is confirmed.
Starting Page	1071
Ending Page	1078
Page Count	8
File Format	PDF
ISSN	15571955
Journal	Plasmonics
Volume Number	12
Issue Number	4
e-ISSN	15571963
Language	English
Publisher	Springer US
Publisher Date	2016-08-22
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Surface plasmons Interferometry Phase measurement Optical sensing and sensors Biotechnology Nanotechnology Biological and Medical Physics, Biophysics Biochemistry
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Biochemistry Biophysics Biotechnology

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