Field effect transistor based on protons as charge carriers

Abstract

We demonstrated a field effect transistor based on the modulation of the proton flow in confined water-containing nanochannels. The device resembles an MOSFET transistor with the difference that the charge carriers here are ions (i.e. protons) instead of electrons. The effective cross-section of the conductive channels in the transistor is defined by the intensity of the electrical double layer and by the potential applied to the transistor gate.