Fig. 3: Optimization of plasmonic sensing characteristics.
From: Ultrasensitive detection of endocrine disruptors via superfine plasmonic spectral combs

a Experimental SPR spectrum response of the plasmonic optical fiber when modified with the DTB-PEG-SH on the gold film in 1 h (inset: zoomed spectral changes of the two most sensitive modes 4 and 5); b Relative intensity change of the modes 1–8 during the whole DTB-PEG-SH modification; c Total intensity change of modes 1–8 after 1 h reaction; d–f The simulated results corresponding to the conditions in panels a–c, in good agreement with the experimental results.