Fig. 8
From: Progress of infrared guided-wave nanophotonic sensors and devices
MIR sensing analysis approaches. a Mixture sensing analysis using the resonance spectrum of an MRR (Reproduced with permission from [165]), (i) MRR resonance spectrum, (ii) Calculated absorption coefficient from extinction ratio change and refractive index change from resonant wavelength shift, (iii) Individual analyte concentration after linear transformation. b Relative absorption spectrum of three chemicals (Reproduced with permission from [156]), (i) N-Bromohexane, (ii) Isopropanol, (iii) Toluene