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Bio‐Inspired Stretchable, Adhesive, and Conductive Structural Color Film for Visually Flexible Electronics
Author(s) -
Wang Yu,
Yu Yunru,
Guo Jiahui,
Zhang Zhuohao,
Zhang Xiaoxuan,
Zhao Yuanjin
Publication year - 2020
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202000151
Subject(s) - materials science , structural coloration , electronics , stretchable electronics , adhesive , flexible electronics , electrical conductor , nanotechnology , flexible display , flexibility (engineering) , bioelectronics , layer (electronics) , electronic skin , electrically conductive , optoelectronics , composite material , biosensor , photonic crystal , thin film transistor , electrical engineering , statistics , mathematics , engineering
The rapid progress in flexible electronic devices has attracted immense interest in many applications, such as health monitoring devices, sensory skins, and implantable apparatus. Here, inspired by the adhesion features of mussels and the color shift mechanism of chameleons, a novel stretchable, adhesive, and conductive structural color film is presented for visually flexible electronics. The film is generated by adding a conductive carbon nanotubes polydopamine (PDA) filler into an elastic polyurethane (PU) inverse opal scaffold. Owing to the brilliant flexibility and inverse opal structure of the PU layer, the film shows stable stretchability and brilliant structural color. Besides, the catechol groups on PDA impart the film with high tissue adhesiveness and self‐healing capability. Notably, because of its responsiveness, the resultant film is endowed with color‐changing ability that responds to motions, which can function as dual‐signal soft human‐motion sensors for real‐time color‐sensing and electrical signal monitoring. These features make the bio‐inspired hydrogel‐based electronics highly potential in the flexible electronics field.