Open AccessVoltage Amplifier Based on Organic Electrochemical Transistor
Author(s) -
Braendlein Marcel,
Lonjaret Thomas,
Leleux Pierre,
Badier JeanMichel,
Malliaras George G.
Publication year - 2017
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201600247
Subject(s) - transistor , resistor , amplifier , common source , electrophysiology , operational amplifier , voltage , electrical engineering , materials science , transistor array , transducer , computer science , electronic engineering , optoelectronics , cmos , engineering , neuroscience , biology
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.