Table 3.

Reproducibility of the five independent potentiometric arrayed glucose biosensors based on Nafion-GOx/GO/AZO over glucose concentrations ranging from 2 to 10 mM (number of sensors, N = 5).

Number of Sensors	Glucose Concentration (mM)	Response Voltage (Mean ± SD, mV)	Average Sensitivity (mV/mM)	Linearity
1	2	146.64 ± 3.77	15.42	0.996
	4	121.10 ± 4.36
	6	91.54 ± 3.68
	8	50.20 ± 4.16
	10	27.88 ± 6.36
2	2	145.13 ± 4.57	15.14	0.997
	4	123.12 ± 4.80
	6	90.31 ± 5.47
	8	53.49 ± 6.38
	10	28.50 ± 5.71
3	2	142.87 ± 5.46	15.67	0.994
	4	125.10 ± 4.92
	6	89.35 ± 5.16
	8	51.34 ± 6.01
	10	23.07 ± 6.38
4	2	145.25 ± 4.25	15.38	0.996
	4	124.69 ± 5.28
	6	92.10 ± 6.16
	8	53.46 ± 5.74
	10	27.03 ± 5.95
5	2	144.51 ± 6.34	15.10	0.997
	4	119.39 ± 4.31
	6	89.37 ± 5.84
	8	50.86 ± 3.17
	10	27.79 ± 5.06