Figure 5
From: Functionalization of an extended-gate field-effect transistor (EGFET) for bacteria detection

(a) Transfer characteristic of the MOSFET without the sensing area (squares) in comparison to (b) EGFETs contacted with a PBS-solution (circles) or a bacteria suspension (triangles) on the porphyrin-functionalized sensing area. The measurement results are shown only in forward manner for a clear overview (b) due to the almost identical characteristics of the EGFETs compared to the MOSFET results presented in (a).