title: Voltage Amplifier Based on Organic Electrochemical Transistor.
abstract: Organic electrochemical transistors (OECTs) are receiving a great deal of attention as amplifying transducers for electrophysiology. A key limitation of this type of transistors, however, lies in the fact that their output is a current, while most electrophysiology equipment requires a voltage input. A simple circuit is built and modeled that uses a drain resistor to produce a voltage output. It is shown that operating the OECT in the saturation regime provides increased sensitivity while maintaining a linear signal transduction. It is demonstrated that this circuit provides high quality recordings of the human heart using readily available electrophysiology equipment, paving the way for the use of OECTs in the clinic.
authors.affiliation: Department of Bioelectronics Ecole Nationale Supérieure des Mines CMP-EMSE, MOC Gardanne 13541 France.
authors.forename: Marcel
authors.initials: M
authors.lastname: Braendlein
authors.affiliation: Department of Bioelectronics Ecole Nationale Supérieure des Mines CMP-EMSE, MOC Gardanne 13541 France; Micro Vitae Technologies Hôtel Technologique Meyreuil 13590 France.
authors.forename: Thomas
authors.initials: T
authors.lastname: Lonjaret
authors.affiliation: Department of Bioelectronics Ecole Nationale Supérieure des Mines CMP-EMSE, MOC Gardanne 13541 France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Leleux
authors.affiliation: Institut de Neurosciences des Systèmes Aix-Marseille Université, INS/Inserm 13005 Marseille France.
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Badier
authors.affiliation: Department of Bioelectronics Ecole Nationale Supérieure des Mines CMP-EMSE, MOC Gardanne 13541 France.
authors.forename: George G
authors.initials: GG
authors.lastname: Malliaras
keywords: device physics; electrocardiography; organic electronics; poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate); voltage amplifier circuit