Fig. 4: Optical responses of sensors with various interfaces under various microcurrents at the working electrode. | Light: Science & Applications

Fig. 4: Optical responses of sensors with various interfaces under various microcurrents at the working electrode.

From: Microscale insight into the proton concentration during electrolytic reaction via an optical microfiber: potential for microcurrent monitoring by a dielectric probe

Fig. 4

Actual pH sensitivities in the electrolyte of sensors with (a) GO-MoS2-Au, (f) GO-MoS2, (i) MoS2-GO, l MoS2, and (o) GO interfaces. (Actual pH sensitivity: the pH sensitivity subtracted the ‘ion interference’ from the ‘apparent pH sensitivity with ion interference’.) Wavelength shifts of the sensors with (b, c) GO-MoS2-Au, (g, h) GO-MoS2, (j, k) MoS2-GO, (m, n) MoS2, and (p, q) GO interfaces. b, g, j, m, p: 3 μA; (c, h, k, n, q): 0.25 mA. Derivative of the wavelength shift with respect to time d(nm)/dt of the sensors for microcurrents of (d) 3 μA and (e) 0.25 mA. r Wavelength shift ratios when the microcurrent was 0.25 mA and 3 μA

Back to article page