期刊
MATERIALS LETTERS
卷 350, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2023.134964
关键词
Hydrogels; Metal ions; Self-healing; Toughness; Bioelectronics
Polydopamine-based hydrogels, inspired by mussels, can repair themselves autonomously but have reduced mechanical strength. By incorporating bimetallic ions, tissue-mimetic hydrogels with enhanced toughness, self-healing properties, and high conductivity are developed. A bioelectronic sensor is constructed to detect human motion, pulse, and voice.
Polydopamine (PDA)-based hydrogels, inspired by mussels, are a typical example of tissue-mimetic materials that can repair themselves autonomously. However, the self-healing capability of the hydrogels is counter-balanced by a reduction in their mechanical strength and toughness, which restricts their suitability for con-ventional load-bearing applications. In this work, through the incorporation of bimetallic ions, the PDA-based tissue-mimetic hydrogels with enhanced mechanical toughness, excellent self-healing properties and high con-ductivity are developed. To demonstrate the utility, a bioelectronic sensor is constructed for detecting large movement of human motions and subtle pulse and voice monitoring.
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