Fig. 3
From: Nanodetection of Head and Neck Cancer on Titanium Oxide Sensing Surface
Immobilization processes on IDE-TiO2 surfaces. a With antibody. b With GNS antibody. Surface modifications were started by 3% APTES, followed by EDC and NHS activation to immobilize the antibody; 1 M of ethanolamine was used to block the unattached antibody region. A linear sweep voltage of 0 to 2 V at 0.01 V step voltage was followed for the measurements. Proper changes in current after each immobilization were confirmed the binding of antibody and GNS antibody on the sensing surfaces