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Stretchable and Conductive Composite Structural Color Hydrogel Films as Bionic Electronic Skins
Hui Zhang1,2, Jiahui Guo2, Yu Wang2
1Department of Rheumatology and Immunology, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 26, 2021
Summary
This study introduces a novel composite hydrogel film for bionic electronic skins. The material offers high stretchability, conductivity, and self-reporting capabilities, enabling real-time sensing of human motion.
Area of Science:
- Materials Science
- Biomedical Engineering
- Polymer Science
Background:
- Electronic skins (e-skins) are crucial for advanced biomedical applications.
- Current e-skins require enhanced multifunctionality for improved performance.
- Developing materials with superior stretchability, conductivity, and self-reporting is key.
Purpose of the Study:
- To develop a novel natural-synthetic polymers composite structural color hydrogel film.
- To create an ideal multi-signal bionic electronic skin with high performance.
- To enable real-time color sensing and electrical response during human motion.
Main Methods:
- Fabrication of a composite hydrogel film using polyacrylamide (PAM), silk fibroin (SF), PEDOT:PSS, and graphene oxide (GO).
- Replication of colloidal crystal templates to construct inverse opal scaffolds.
- Acid treatment to impart structural color and conductivity while maintaining flexibility.
Main Results:
- The composite hydrogel film exhibits vivid structural color, high conductivity, stretchability, and flexibility.
- Demonstrated obvious color variation and electromechanical properties during stretching and bending.
- The film functions as a multi-signal response electronic skin for human motion monitoring.
Conclusions:
- The developed composite structural color hydrogel film offers superior performance for bionic electronic skins.
- The material's unique properties enable real-time multi-signal sensing.
- This innovation expands the practical applications of advanced electronic skins.
