Selective Ion Detection with Integrated Organic Electrochemical Transistors

Accurate sensing of ion concentrations in body fluids is importance to monitor cell functions, and any deviation the concentration serves as a warning sign pathophysiological conditions. Here, fabrication approach for an integrated device consisting two electrochemical transistors, capable selective simultaneous detection between potassium sodium ions analyte demonstrated. A common in-plane gate electrode substrate, enabling micro-scale sensors biomedical applications. The versatile can be extended include numerous ion-selective transistors on chip order meet demand multiple ions.