Related Experiment Video
Updated: Oct 16, 2025
11:09
Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh
Published on: June 23, 2017
10.3K
Ultrastretchable conductive liquid metal composites enabled by adaptive interfacial polarization
Chunyan Cao1, Xin Huang1, Dong Lv1
1Department of Biomedical Sciences, City University of Hong Kong, Hong Kong 999077, P. R. China. xi.yao@cityu.edu.hk.
Materials Horizons
|October 22, 2021
Summary
Gallium-based liquid metals (LMs) in flexible electronics are now ultra-stretchable. Dynamic interactions between liquid metals and PVDF copolymer enable robust, highly conductive composites for advanced wearable devices and sensors.
Area of Science:
- Materials Science
- Polymer Science
- Electronics Engineering
Background:
- Gallium-based liquid metals (LMs) show promise for flexible electronics.
- High LM surface energy limits stretchability in conductive composites.
- Developing stretchable conductive materials is crucial for wearable technology.
Purpose of the Study:
- To enhance the stretchability of liquid metal-polymer composites.
- To investigate the role of dynamic interplay between LMs and PVDF copolymers.
- To enable scalable fabrication of high-performance conductive composites for wearables.
Main Methods:
- Utilizing gallium-based liquid metals and polyvinylidene fluoride (PVDF) copolymer.
- Investigating interfacial polarization interactions between PVDF and LM oxide layers.
- Characterizing composite structural integrity, conductivity, and resistance under extreme strain (1000%–10,000%).
Main Results:
- Achieved ultra-stretchable conductive composites through dynamic LM-PVDF interactions.
- Demonstrated continuous, adaptive LM channels enabled by interfacial polarization.
- Maintained high surface conductivity and minimal resistance changes under strains up to 10,000%.
Conclusions:
- Dynamic LM-PVDF interactions overcome LM depletion issues, enabling ultra-stretchability.
- The developed composites offer flexible processability and exceptional performance.
- This strategy facilitates scalable fabrication of conductive composites for wearable devices and sensors.
