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. 2024 Feb 26;14:4599. doi: 10.1038/s41598-024-55082-w

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© The Author(s) 2024

Open Access This 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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(a) Schematic illustration of the one-step CO₂ laser irradiation process to convert the PI ion gel into i-LIG. (b) Schematic representation of i-LIG onto PI ion gel. (inset: FE-SEM image of i-LIG) (c) Chemical molecular structures of PI ion gel, comprising polyimide, IL ([EMIM]⁺[TFSI]^-). (d) Photograph of i-LIG pattern on PI ion gel (top), and a FE-SEM image of i-LIG (bottom). (e) Illustration comparing the ion gel interface with i-LIG to a conventional electrode.