Double-microcrack coupling stretchable neural electrode for electrophysiological communication

Developing neural electrodes with high stretchability and stable conductivity is a promising method to explore applications of them in biological medicine and electronic skin. However, considering the poor mechanical stretchability of typical conductive materials, maintaining the connection of elect...

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Main Authors: Yang, Dan, Tian, Gongwei, Liang, Cuiyuan, Yang, Zixu, Zhao, Qinyi, Chen, Jianhui, Ma, Cong, Jiang, Ying, An, Na, Liu, Yan, Qi, Dianpeng
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/170637
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1706372023-09-25T02:30:15Z Double-microcrack coupling stretchable neural electrode for electrophysiological communication Yang, Dan Tian, Gongwei Liang, Cuiyuan Yang, Zixu Zhao, Qinyi Chen, Jianhui Ma, Cong Jiang, Ying An, Na Liu, Yan Qi, Dianpeng School of Materials Science and Engineering Engineering::Materials Electrophysiological Signals Flexible Electrodes Developing neural electrodes with high stretchability and stable conductivity is a promising method to explore applications of them in biological medicine and electronic skin. However, considering the poor mechanical stretchability of typical conductive materials, maintaining the connection of electrode conductive paths under high stretching is still a challenge. Herein, for the first time, a double-microcrack coupling strategy for highly stretchable neural electrodes is proposed. Compared with single-layer stretchable microcrack electrodes, the design utilizes the complement between two gold microcrack films to contribute more conductive paths. It shows that the resistance change (R/R0) of the electrode under 100% strain is about 5.6 times, which is much lower than other electrodes and exhibits a high stretchability of ≈200%. Simultaneously, this design is an encapsulation-free design which avoids the electrode performance degradation caused by encapsulation. Furthermore, it is found that the adhesion strength between metal electrode and substrate is critical to the stretchability and stability of electrodes, so polydimethylsiloxane0.9-isophorone diisocyanate elastomer (PDMS0.9-IPDI), whose adhesion to gold electrode is 4.5 times higher than that of the commercial polydimethylsiloxane (PDMS), is synthesized. Finally, the electrophysiological communication between different organisms by electrodes is successfully demonstrated. The authors acknowledged funding support from the National Natural Science Foundation of China (Grant No. 52173237) and the Fundamental Research Funds for the Central Universities (Grant No. HIT.OCEF.2022018). Interdisciplinary Research Foundation of HIT (No. IR2021207); Project of National Center for International Research on Intelligent Nano-Materials and Detection Technology in Environmental Protection, Soochow University (No. SDGH2105); The Open Project Program (No. PEBM202107) of Key Laboratory for Photonic and Electric Bandgap Materials, Ministry of Education. 2023-09-25T02:30:15Z 2023-09-25T02:30:15Z 2023 Journal Article Yang, D., Tian, G., Liang, C., Yang, Z., Zhao, Q., Chen, J., Ma, C., Jiang, Y., An, N., Liu, Y. & Qi, D. (2023). Double-microcrack coupling stretchable neural electrode for electrophysiological communication. Advanced Functional Materials, 33(37), 2300412-. https://dx.doi.org/10.1002/adfm.202300412 1616-301X https://hdl.handle.net/10356/170637 10.1002/adfm.202300412 2-s2.0-85159927066 37 33 2300412 en Advanced Functional Materials © 2023 Wiley-VCH GmbH. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Electrophysiological Signals
Flexible Electrodes
spellingShingle Engineering::Materials
Electrophysiological Signals
Flexible Electrodes
Yang, Dan
Tian, Gongwei
Liang, Cuiyuan
Yang, Zixu
Zhao, Qinyi
Chen, Jianhui
Ma, Cong
Jiang, Ying
An, Na
Liu, Yan
Qi, Dianpeng
Double-microcrack coupling stretchable neural electrode for electrophysiological communication
description Developing neural electrodes with high stretchability and stable conductivity is a promising method to explore applications of them in biological medicine and electronic skin. However, considering the poor mechanical stretchability of typical conductive materials, maintaining the connection of electrode conductive paths under high stretching is still a challenge. Herein, for the first time, a double-microcrack coupling strategy for highly stretchable neural electrodes is proposed. Compared with single-layer stretchable microcrack electrodes, the design utilizes the complement between two gold microcrack films to contribute more conductive paths. It shows that the resistance change (R/R0) of the electrode under 100% strain is about 5.6 times, which is much lower than other electrodes and exhibits a high stretchability of ≈200%. Simultaneously, this design is an encapsulation-free design which avoids the electrode performance degradation caused by encapsulation. Furthermore, it is found that the adhesion strength between metal electrode and substrate is critical to the stretchability and stability of electrodes, so polydimethylsiloxane0.9-isophorone diisocyanate elastomer (PDMS0.9-IPDI), whose adhesion to gold electrode is 4.5 times higher than that of the commercial polydimethylsiloxane (PDMS), is synthesized. Finally, the electrophysiological communication between different organisms by electrodes is successfully demonstrated.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Yang, Dan
Tian, Gongwei
Liang, Cuiyuan
Yang, Zixu
Zhao, Qinyi
Chen, Jianhui
Ma, Cong
Jiang, Ying
An, Na
Liu, Yan
Qi, Dianpeng
format Article
author Yang, Dan
Tian, Gongwei
Liang, Cuiyuan
Yang, Zixu
Zhao, Qinyi
Chen, Jianhui
Ma, Cong
Jiang, Ying
An, Na
Liu, Yan
Qi, Dianpeng
author_sort Yang, Dan
title Double-microcrack coupling stretchable neural electrode for electrophysiological communication
title_short Double-microcrack coupling stretchable neural electrode for electrophysiological communication
title_full Double-microcrack coupling stretchable neural electrode for electrophysiological communication
title_fullStr Double-microcrack coupling stretchable neural electrode for electrophysiological communication
title_full_unstemmed Double-microcrack coupling stretchable neural electrode for electrophysiological communication
title_sort double-microcrack coupling stretchable neural electrode for electrophysiological communication
publishDate 2023
url https://hdl.handle.net/10356/170637
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