Figure 5
From: Rapid, high-sensitivity detection of biomolecules using dual-comb biosensing
Temperature-drift-free dual-comb RI sensing of glycerol solution. (a) Sensorgrams of δfrep1 in the active sensing OFC and δfrep2 in the dummy sensing OFC. Glycerol solutions consisting of glycerin and pure water at different ratios were used as the target samples in the active sensing OFC; pure water was used as the reference sample in the dummy sensing OFC [see the third row in Table 1 and Fig. 3c]. Grey zones indicate the time period for sample exchange by peristaltic pumps. δfrep1 and δfrep2 were calculated as the frequency deviations from the initial values of frep1 and frep2, respectively. (b) Sensorgram of δ∆frep with mixtures of glycerin and pure water at different ratios. δ∆frep was calculated as the frequency deviation from the initial value of ∆frep. (c) Relationship between the sample RI and δ∆frep.
