Fig. 2: Schematic representation of the platform.
From: Paper-based electrochemical device for early detection of integrin αvβ6 expressing tumors
a Engineering of the paper-based electrochemical strip following the screen-printing of conductive ink, modification with a dispersion of gold nanoparticles, covalent engineering of the αvβ6-selective probe and saturation of the surface with mercaptohexanol (6-MCH); b Impedimetric measurements show an increase of the semi-circle (charge transfer resistance, Rct) when the binding between probe and protein occurs (orange line) in comparison with absence of target (black line).
