Fig. 5 | Scientific Reports

Fig. 5

From: Polarization modulated spectroscopic ellipsometry-based surface plasmon resonance biosensor for E. coli K12 detection

Fig. 5

(a) In-situ measurement of the position of the resonance wavelength for different water-glycerol concentrations. Dark green and bright green curves represent the actual and smoothed data, respectively. (b) Intensity spectra near the plasmonic resonance wavelength for different water-glycerol concentrations. (c) Position of the resonance wavelength versus refractive index of water-glycerol solutions and fitted curve. (d) Calculated standard deviation for each water-glycerol concentration. (e) In-situ tracking of the position of the resonance wavelength for water as a reference medium for approximately 1 hour.

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