Table 2 Experimental data for varying molar weight of antigen and antibody solutions.

From: Polyaza functionalized graphene oxide nanomaterial based sensor for Escherichia coli detection in water matrices

Distilled water (in mL)

E. coli (in mL)

Optical density

Step change in microcontroller

Voltage output (mV)

Amine functionalized fGO based nanosensor solution, 0.05 mL

1.5

1.5

1.29

269

− 0.19

2

1

0.9

267

− 0.19

2.5

0.5

0.86

267

− 0.18

2.8

0.2

0.8

266

− 0.17

3

0

0

265

− 0.17

Amine functionalized GO-based nanosensor solution, 0.1 mL

1.5

1.5

0.79

265

− 0.17

2

1

0.65

265

− 0.16

2.5

0.5

0.51

264

− 0.16

2.8

0.2

0.45

262

− 0.15

3

0

0

260

− 0.15

Amine functionalized GO-based nanosensor solution, 0.5 mL

1.5

1.5

0.41

259

− 0.14

2

1

0.37

257

− 0.14

2.5

0.5

0.28

256

− 0.13

2.8

0.2

0.15

255

− 0.13

3

0

0

253

− 0.12