PDMS/CNT electrodes with bioamplifier for practical in-the-ear and conventional biosignal recordings

Potential usage of dry electrodes in emerging applications such as wearable devices, flexible tattoo circuits, and stretchable displays requires that, to become practical solutions, issues such as easy fabrication, strong durability, and low-cost materials must be addressed. The objective of this st...

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Bibliographic Details
Published in:Journal of neural engineering 2024-09, Vol.21 (5), p.56017
Main Authors: Sanguantrakul, Jongsook, Hemakom, Apit, Soonrach, Tharapong, Israsena, Pasin
Format: Article
Language:English
Subjects:
alpha rhythm
Amplifiers, Electronic
auditory steady-state response
bioamplifier
Dimethylpolysiloxanes
Electrocardiography - instrumentation
Electrocardiography - methods
Electrodes
electroencephalography
Electroencephalography - instrumentation
Electroencephalography - methods
Electromyography - instrumentation
Electromyography - methods
Equipment Design - methods
Humans
Nanotubes, Carbon
polydimethylsiloxane
steady-state visually evoked potential
vital sign
Wearable Electronic Devices
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Summary:Potential usage of dry electrodes in emerging applications such as wearable devices, flexible tattoo circuits, and stretchable displays requires that, to become practical solutions, issues such as easy fabrication, strong durability, and low-cost materials must be addressed. The objective of this study was to propose soft and dry electrodes developed from polydimethylsiloxane (PDMS) and carbon nanotube (CNT) composites. The electrodes were connected with both conventional and in-house NTAmp biosignal instruments for comparative studies. The performances of the proposed dry electrodes were evaluated through electromyogram, electrocardiogram, and electroencephalogram measurements. Results demonstrated that the capability of the PDMS/CNT electrodes to receive biosignals was on par with that of commercial electrodes (adhesive and gold-cup electrodes). Depending on the type of stimuli, a signal-to-noise ratio of 5-10 dB range was achieved. The results of the study show that the performance of the proposed dry electrode is comparable to that of commercial electrodes, offering possibilities for diverse applications. These applications may include the physical examination of vital medical signs, the control of intelligent devices and robots, and the transmission of signals through flexible materials.
ISSN:1741-2560
1741-2552
1741-2552
DOI:10.1088/1741-2552/ad7905