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Multifunctional hierarchical electronic skins: Unveiling self-repairing mechanisms and advancements in sensing and shielding performance
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2024 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 256, article id 110769Article in journal (Refereed) Published
Abstract [en]

In light of advancements in electronic skins (E-skins), their application in extreme environments poses significant challenges. Inspired by real human skin, we have developed a hierarchical structured electronic skin that utilizes flexible carbon fiber fabric as a framework. Copper nanoflakes and embedded sensors function as the neural layer, while Ethylene Vinyl Acetate acts as the dermal layer, and Polytetrafluoroethylene is employed as the epidermal layer. The reported E-skin demonstrates outstanding flexibility, excellent heat resistance, robust mechanical properties (fracture strength of 1600 MPa, Young's modulus approximately 3.8 GPa), exceptional bending/compression strain performance, excellent hydrophobicity (water contact angle of 120°), effective electromagnetic shielding performance (approximately 45 dB total shielding effectiveness for X-band), and electromagnetic wave absorption capability. Additionally, this E-skin possesses self-healing properties, capable of restoring to its original hydrophobic state within 30 s under a 9V voltage through the Joule heating effect, complemented by corresponding theoretical and mathematical modeling. This E-skin introduces a novel, environmentally friendly, and operationally simple strategy for enhancing the extreme environment resistance and durability of flexible devices. 

Place, publisher, year, edition, pages
Elsevier BV , 2024. Vol. 256, article id 110769
Keywords [en]
Electromagnetic shielding, Flexible composite membrane, Hydrophobic and waterproof electronic skin, Self-repairing capability
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:miun:diva-52078DOI: 10.1016/j.compscitech.2024.110769ISI: 001280031600001Scopus ID: 2-s2.0-85199393619OAI: oai:DiVA.org:miun-52078DiVA, id: diva2:1887640
Available from: 2024-08-08 Created: 2024-08-08 Last updated: 2025-09-25Bibliographically approved

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Nilsson, Fritjof

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Department of Engineering, Mathematics, and Science Education (2023-)
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Citation style
  • apa
  • ieee
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  • Other style
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