Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/140231
Title: Highly stretchable, compliant, polymeric microelectrode arrays for in vivo electrophysiological interfacing
Authors: Qi, Dianpeng
Liu, Zhiyuan
Liu, Yan
Jiang, Ying
Leow, Wan Ru
Pal, Mayank
Pan, Shaowu
Yang, Hui
Wang, Yu
Zhang, Xiaoqian
Yu, Jiancan
Li, Bin
Yu, Zhe
Wang, Wei
Chen, Xiaodong
Keywords: Engineering::Materials
Issue Date: 2017
Source: Qi, D., Liu, Z., Liu, Y., Jiang, Y., Leow, W. R., Pal, M., . . ., Chen, X. (2017). Highly stretchable, compliant, polymeric microelectrode arrays for in vivo electrophysiological interfacing. Advanced materials, 29(40), 1702800-. doi:10.1002/adma.201702800
Journal: Advanced materials
Abstract: Polymeric microelectrode arrays (MEAs) are emerging as a new generation of biointegrated microelectrodes to transduce original electrochemical signals in living tissues to external electrical circuits, and vice versa. So far, the challenge of stretchable polymeric MEAs lies in the competition between high stretchability and good electrode-substrate adhesion. The larger the stretchability, the easier the delamination of electrodes from the substrate due to the mismatch in their Young's modulus. In this work, polypyrrole (PPy) electrode materials are designed, with PPy nanowires integrated on the high conductive PPy electrode arrays. By utilizing this electrode material, for the first time, stretchable polymeric MEAs are fabricated with both high stretchability (≈100%) and good electrode-substrate adhesion (1.9 MPa). In addition, low Young's modulus (450 kPa), excellent recycling stability (10 000 cycles of stretch), and high conductivity of the MEAs are also achieved. As a proof of concept, the as-prepared polymeric MEAs are successfully used for conformally recording the electrocorticograph signals from rats in normal and epileptic states, respectively. Further, these polymeric MEAs are also successful in stimulating the ischiadic nerve of the rat. This strategy provides a new perspective to the highly stretchable and mechanically stable polymeric MEAs, which are vital for compliant neural electrodes.
URI: https://hdl.handle.net/10356/140231
ISSN: 0935-9648
DOI: 10.1002/adma.201702800
Rights: This is the accepted version of the following article: Qi, D., Liu, Z., Liu, Y., Jiang, Y., Leow, W. R., Pal, M., . . ., Chen, X. (2017). Highly stretchable, compliant, polymeric microelectrode arrays for in vivo electrophysiological interfacing. Advanced materials, 29(40), 1702800-., which has been published in final form at doi:10.1002/adma.201702800. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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