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. 2020 Dec 22;7:40. doi: 10.1186/s40580-020-00250-7

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 7 — a Schematic illustration of the platform fabrication and culturing of PC12 cells. b The real-time amperometry test for dopamine. c The dopamine selectivity test for the fabricated platform. d The real-time amperometry test for current changes with K⁺ stimulation of a cell suspension solution. With permission from [64]; Copyright 2019, ACS applied materials and interfaces