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18 September 2018 Subthreshold biosensing with organic electrochemical transistors (Conference Presentation)
Jonathan Rivnay
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Proceedings Volume 10738, Organic and Hybrid Sensors and Bioelectronics XI; 1073802 (2018) https://doi.org/10.1117/12.2322387
Event: SPIE Organic Photonics + Electronics, 2018, San Diego, California, United States
Abstract
Organic electrochemical transistors (OECTs) have gained considerable interest for applications in bioelectronics and neuromorphic computing. Their defining characteristic is the bulk-modulation of channel conductance owing to the facile penetration of ions into the (semi)conducting polymeric channel. In the realm of bioelectronics, OECTs have shown promise as amplifying transducers due to their stability in aqueous conditions and high transconductance. These devices can be fabricated in conformable form factors for in vivo stimulation/recording, and for cutaneous EEG and ECG recordings in human subjects. While past research has focused on the high transconductance operation of these devices, new materials present advantageous properties such as efficient sub-threshold switching. We report on a glycolated thiophene-based conducting polymer with sub threshold swing as low as 60 mV/decade, and on these materials’ integration as low power active sensing nodes for electrophysiological recordings.
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Jonathan Rivnay "Subthreshold biosensing with organic electrochemical transistors (Conference Presentation)", Proc. SPIE 10738, Organic and Hybrid Sensors and Bioelectronics XI, 1073802 (18 September 2018); https://doi.org/10.1117/12.2322387
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KEYWORDS
Transistors
Biosensing
Polymers
Active remote sensing
Electrocardiography
Electroencephalography
Human subjects
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