Cited by 165Conducting polymers and applicationsNeuroscience and Neural EngineeringAdvanced Sensor and Energy Harvesting Materials

The DOI matches its Crossref record; 28 of the 28 references it cites were found in a registry or an index.

Conductive Polymer Combined Silk Fiber Bundle for Bioelectrical Signal Recording

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Abstract

Electrode materials for recording biomedical signals, such as electrocardiography (ECG), electroencephalography (EEG) and evoked potentials data, are expected to be soft, hydrophilic and electroconductive to minimize the stress imposed on living tissue, especially during long-term monitoring. We have developed and characterized string-shaped electrodes made from conductive polymer with silk fiber bundles (thread), which offer a new biocompatible stress free interface with living tissue in both wet and dry conditions.An electroconductive polyelectrolyte, poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT-PSS) was electrochemically combined with silk thread made from natural Bombyx mori. The polymer composite 280 µm thread exhibited a conductivity of 0.00117 S/cm (which corresponds to a DC resistance of 2.62 Mohm/cm). The addition of glycerol to the PEDOT-PSS silk thread improved the conductivity to 0.102 S/cm (20.6 kohm/cm). The wettability of PEDOT-PSS was controlled with glycerol, which improved its durability in water and washing cycles. The glycerol treated PEDOT-PSS silk thread showed a tensile strength of 1000 cN in both wet and dry states. Without using any electrolytes, pastes or solutions, the thread directly collects electrical signals from living tissue and transmits them through metal cables. ECG, EEG, and sensory evoked potential (SEP) signals were recorded from experimental animals by using this thread placed on the skin. PEDOT-PSS silk glycerol composite thread offers a new class of biocompatible electrodes in the field of biomedical and health promotion that does not induce stress in the subjects.

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Crossref · 10.1371/journal.pone.0033689

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Metadata

Authors
Tsukada, S., Nakashima, H., & Torimitsu, K.
Affiliations
NTT (Japan) (JP)
Corresponding author
Tsukada, Shingo
Venue
PLoS ONE
Published
2012-04-06
Volume
7
Issue
4
Pages
e33689
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2084865356
Cited by
163
References
28
Citations by year
2026: 2 · 2025: 5 · 2024: 7 · 2023: 10 · 2022: 15 · 2021: 22 · 2020: 9 · 2019: 17 · 2018: 16 · 2017: 20 · 2016: 9 · 2015: 17 · 2014: 7 · 2013: 5 · 2012: 2
FWCI
7.80
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Conducting polymers and applications
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
Keywords
conducting polymers, PEDOT:PSS, biocompatible electrodes, electrocardiogram, EEG, sensory evoked potentials, glycerol additive, wettability, tensile strength, skin electrodes, long-term monitoring
MeSH terms
Animals, Biocompatible Materials, Electric Conductivity, Electrocardiography, Electrodes, Electroencephalography, Evoked Potentials, Somatosensory, Glycerol, Humans, Microscopy, Electron, Scanning, Polystyrenes, Bombyx, Tensile Strength, Thiophenes, Water, Wettability, Rats, Sprague-Dawley, Silk, Rats, Electrochemical Techniques

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