Fig. 6: Plasmonic gold film-coated TFBG-based SPR biosensor using hERα LBD for ultrasensitive EE detection.
From: Ultrasensitive detection of endocrine disruptors via superfine plasmonic spectral combs
a Schematic diagram of the biosensor set-up; b schematic illustration of the sensing mechanism for detection of broad ranges of EEs by using hERα LBD as the biological recognition element. In brief, the gold film-coated fiber surface is tethered with the DTB molecules, and the unbound E2–STV conjugates are captured via the STV–DTB affinity interaction into the range of SPR in red curve, which will change the spectral of fiber sensors.
