Strategies for fabrication of innovative and highly biocompatible diamond electrodes

In this work we report a method to fabricate biocompatible diamond-based electrodes by an ad-hoc modified CVD methodology. This technique allows the insertion of biocompatible metal species, as dopants, into the diamond matrix. A key step in the development of these innovative electrodes is the control of their electrical and electrochemical surface properties, since they are electrically heterogeneous. Thus, Conductive Atomic Force Microscopy (C-AFM) and Electrochemical Atomic Force Microscopy (EC-AFM) have been employed to study the electrical response and the surface reactivity of these innovative electrodes.