Multifunctional hierarchical electronic skins: Unveiling self-repairing mechanisms and advancements in sensing and shielding performance

Qu M, Hu L, Wang S, Chen H, Yang G, Schubert DW, Chen R, Nilsson F, Han L (2024)

Publication Type: Journal article, Review article

Publication year: 2024

Journal

Composites Science and Technology Elsevier

Book Volume: 256

Article Number: 110769

DOI: 10.1016/j.compscitech.2024.110769

Abstract

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.

Authors with CRIS profile

Guanda Yang Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe)

Involved external institutions

Guangdong Polytechnic Normal University CN China (CN) Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) SE Sweden (SE)

How to cite

APA:

Qu, M., Hu, L., Wang, S., Chen, H., Yang, G., Schubert, D.W.,... Han, L. (2024). Multifunctional hierarchical electronic skins: Unveiling self-repairing mechanisms and advancements in sensing and shielding performance. Composites Science and Technology, 256. https://doi.org/10.1016/j.compscitech.2024.110769

MLA:

Qu, Muchao, et al. "Multifunctional hierarchical electronic skins: Unveiling self-repairing mechanisms and advancements in sensing and shielding performance." Composites Science and Technology 256 (2024).

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