State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory for Advanced Materials, Fudan University, 200433, Shanghai, China.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology, Center for Advanced Low-Dimension Materials, Donghua University, 201620, Shanghai, China.
Nat Commun. 2018 Mar 19;9(1):1134. doi: 10.1038/s41467-018-03456-w.
Biomimetic skin-like materials, capable of adapting shapes to variable environments and sensing external stimuli, are of great significance in a wide range of applications, including artificial intelligence, soft robotics, and smart wearable devices. However, such highly sophisticated intelligence has been mainly found in natural creatures while rarely realized in artificial materials. Herein, we fabricate a type of biomimetic iontronics to imitate natural skins using supramolecular polyelectrolyte hydrogels. The dynamic viscoelastic networks provide the biomimetic skin with a wide spectrum of mechanical properties, including flexible reconfiguration ability, robust elasticity, extremely large stretchability, autonomous self-healability, and recyclability. Meanwhile, polyelectrolytes' ionic conductivity allows multiple sensory capabilities toward temperature, strain, and stress. This work provides not only insights into dynamic interactions and sensing mechanism of supramolecular iontronics, but may also promote the development of biomimetic skins with sophisticated intelligence similar to natural skins.
仿生皮肤状材料能够适应各种环境的形状变化并感知外部刺激，在人工智能、软机器人和智能可穿戴设备等广泛应用中具有重要意义。然而，这种高度复杂的智能主要存在于自然生物中，而在人工材料中很少实现。在这里，我们使用超分子聚电解质水凝胶制造了一种仿生离子电子器件，以模拟天然皮肤。动态粘弹性网络为仿生皮肤提供了广泛的机械性能，包括灵活的可重构能力、坚固的弹性、极高的拉伸性、自主自修复能力和可回收性。同时，聚电解质的离子导电性使其具有对温度、应变和应力的多种感知能力。这项工作不仅为超分子离子电子学的动态相互作用和传感机制提供了深入的了解，还有望促进具有类似天然皮肤复杂智能的仿生皮肤的发展。
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