Electrocardiogram measurements in water using poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) nanosheets waterproofed by polyurethane film

Sho Mihara; Hui Lin Lee; Shinji Takeoka

doi:10.1557/mrc.2020.72

Electrocardiogram measurements in water using poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) nanosheets waterproofed by polyurethane film

Sho Mihara, Hui Lin Lee, Shinji Takeoka^*

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Waterproof bioelectrodes enable long-term biological monitoring and the assessment of performances of athletes in water. Existing gel electrodes change their electrical properties even when covered with a waterproof film. Here, the authors present the poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)/poly(styrene-butadiene-styrene) (SBS) bi-layer nanosheet and waterproof film for a comfortable waterproof bioelectrode. PEDOT:PSS/SBS is fully foldable with a conductivity loss of only 5%. This foldable nanosheet electrode provides a reliable electrical connection between the skin and the wire. The waterproof film-covered bioelectrode enables continuous monitoring of electrocardiograms in water, showing a signal-to-noise ratio of 21.5 dB for the R wave and 17.5 dB for the T wave, comparable to atmospheric measurements, and sensing a change in heart rate from 79 to 131 bpm during bathing.

Original language	English
Pages (from-to)	628-635
Number of pages	8
Journal	MRS Communications
Volume	10
Issue number	4
DOIs	https://doi.org/10.1557/mrc.2020.72
Publication status	Published - 2020 Dec

ASJC Scopus subject areas

Materials Science(all)

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10.1557/mrc.2020.72

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title = "Electrocardiogram measurements in water using poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) nanosheets waterproofed by polyurethane film",

abstract = "Waterproof bioelectrodes enable long-term biological monitoring and the assessment of performances of athletes in water. Existing gel electrodes change their electrical properties even when covered with a waterproof film. Here, the authors present the poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)/poly(styrene-butadiene-styrene) (SBS) bi-layer nanosheet and waterproof film for a comfortable waterproof bioelectrode. PEDOT:PSS/SBS is fully foldable with a conductivity loss of only 5%. This foldable nanosheet electrode provides a reliable electrical connection between the skin and the wire. The waterproof film-covered bioelectrode enables continuous monitoring of electrocardiograms in water, showing a signal-to-noise ratio of 21.5 dB for the R wave and 17.5 dB for the T wave, comparable to atmospheric measurements, and sensing a change in heart rate from 79 to 131 bpm during bathing.",

author = "Sho Mihara and Lee, {Hui Lin} and Shinji Takeoka",

note = "Funding Information: This work was supported by Waseda Research Institute for Science and Engineering Project Research (Projects number: 20P15). The authors would like to thank Ms. Adeline Koh Mei Choo at Singapore Polytechnic for English language editing, ASAHI RUBBER INC., ASAHI FR Co. Ltd. and Mr. Tatsuto Nakajima for assistance with ECG measurements. Publisher Copyright: Copyright {\textcopyright} The Author(s), 2020, published on behalf of Materials Research Society by Cambridge University Press.",

year = "2020",

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AU - Takeoka, Shinji

N1 - Funding Information: This work was supported by Waseda Research Institute for Science and Engineering Project Research (Projects number: 20P15). The authors would like to thank Ms. Adeline Koh Mei Choo at Singapore Polytechnic for English language editing, ASAHI RUBBER INC., ASAHI FR Co. Ltd. and Mr. Tatsuto Nakajima for assistance with ECG measurements. Publisher Copyright: Copyright © The Author(s), 2020, published on behalf of Materials Research Society by Cambridge University Press.

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N2 - Waterproof bioelectrodes enable long-term biological monitoring and the assessment of performances of athletes in water. Existing gel electrodes change their electrical properties even when covered with a waterproof film. Here, the authors present the poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)/poly(styrene-butadiene-styrene) (SBS) bi-layer nanosheet and waterproof film for a comfortable waterproof bioelectrode. PEDOT:PSS/SBS is fully foldable with a conductivity loss of only 5%. This foldable nanosheet electrode provides a reliable electrical connection between the skin and the wire. The waterproof film-covered bioelectrode enables continuous monitoring of electrocardiograms in water, showing a signal-to-noise ratio of 21.5 dB for the R wave and 17.5 dB for the T wave, comparable to atmospheric measurements, and sensing a change in heart rate from 79 to 131 bpm during bathing.

AB - Waterproof bioelectrodes enable long-term biological monitoring and the assessment of performances of athletes in water. Existing gel electrodes change their electrical properties even when covered with a waterproof film. Here, the authors present the poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)/poly(styrene-butadiene-styrene) (SBS) bi-layer nanosheet and waterproof film for a comfortable waterproof bioelectrode. PEDOT:PSS/SBS is fully foldable with a conductivity loss of only 5%. This foldable nanosheet electrode provides a reliable electrical connection between the skin and the wire. The waterproof film-covered bioelectrode enables continuous monitoring of electrocardiograms in water, showing a signal-to-noise ratio of 21.5 dB for the R wave and 17.5 dB for the T wave, comparable to atmospheric measurements, and sensing a change in heart rate from 79 to 131 bpm during bathing.

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Electrocardiogram measurements in water using poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) nanosheets waterproofed by polyurethane film

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