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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
(a) The morphology and (b) the current-voltage curves of the ionogel film before and after self-healing. (c) The photograph of the stretching of the repaired ionogel film. (d) The circuits based on the ionogels, cut ionogels, and self-healed ionogels.