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. 2022 Aug 5;13(9):4592–4605. doi: 10.1364/BOE.465136

Fig. 6.

Fig. 6.

(a) Evolution of the transmission spectra and (b) the shifted dip wavelengths during the sensor surface functionalization. Evolution of the transmission spectra during (c) immobilization of S2 antibody and (d) treatment of non-specific blocking solution.