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Stretchable Triboelectric Fiber for Self-powered Kinematic Sensing Textile
Hyeon Jun Sim1, Changsoon Choi1, Shi Hyeong Kim1
1Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University, Seoul 04763, Korea.
Scientific Reports
|October 12, 2016
Summary
Researchers developed new stretchable triboelectric fibers for wearable electronics. These innovative fibers can be woven into textiles, enabling advanced motion detection in electronic textiles and robotic skin applications.
Area of Science:
- Materials Science
- Nanotechnology
- Wearable Technology
Background:
- Stretchable fiber and yarn triboelectric nanogenerators are crucial for wearable sensing systems, including electronic textiles and robotic sensory skin.
- Existing triboelectric fibers often lack the necessary stretchable properties for advanced applications.
Purpose of the Study:
- To introduce a novel type of stretchable and weavable triboelectric fiber with microdiameter dimensions.
- To demonstrate the potential of these fibers in creating advanced wearable sensing systems.
Main Methods:
- Fabrication of microdiameter triboelectric fibers with a core-shell structure.
- Utilizing the Poisson's ratio difference between core and shell layers for electrical generation during tensile deformation.
- Testing the fibers' stretchability, voltage output, and durability through repeated stretching cycles.
Main Results:
- The developed stretchable triboelectric fibers can be reversibly stretched up to 50% while generating voltage proportional to strain.
- The key working principle involves reversible distance change due to Poisson's ratio differences between the silver-coated nylon/polyurethane core and the wrinkled polyvinylidene fluoride-co-trifluoroethylene/carbon nanotube shell.
- The fibers exhibit high performance retention after 10,000 stretching/releasing cycles and are strong enough for weaving into textiles.
Conclusions:
- The new stretchable triboelectric fibers offer a promising solution for developing high-performance wearable sensors.
- These fibers enable the creation of electronic textiles capable of detecting both the magnitude and direction of motion.
- The demonstrated durability and weavability pave the way for practical applications in smart clothing and robotics.
