Fig. 7: Curve fitting of sensor response to the modified Zimbovskaya model and Polanyi–Wigner equation. | Microsystems & Nanoengineering

Fig. 7: Curve fitting of sensor response to the modified Zimbovskaya model and Polanyi–Wigner equation.

From: Molecular bridge-mediated ultralow-power gas sensing

Fig. 7

a I–V measurements of the nanogap sensor device after successful capture of cadaverine molecules at various concentrations of the analyte curve-fitted to the established tunneling current models. The maximum root-mean-square error of the curve-fitting plots shown in the figure was found to be ~45%, 1%, and 0.6% of the average experimental data for the I–V characteristics of the nanogap junction after exposure to 0 ppm, 60 ppm, and 80 ppm cadaverine, respectively. b Normalized conductance response of the sensor to one period of exposure of the nanogap device to cadaverine and its subsequent removal, curve-fitted to adsorption-desorption models

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