3D stretchable and self-encapsulated multimaterial triboelectric fibers

Area of Science:

• Materials Science
• Electrical Engineering
• Nanotechnology

Background:

• Wearable technologies and soft electronics require robust power devices with high deformability and reliable electrical outputs.
• Current fiber-based power systems are limited by processing challenges, resulting in simple configurations and low performance.
• Existing two-dimensional (2D) planar power devices have advanced, but fiber-based systems lag behind.

Purpose of the Study:

• To extend complex 2D triboelectric nanogenerator configurations into 3D fiber formats.
• To overcome processing limitations in fiber-based energy harvesting.
• To enhance the mechanical and electrical performance of fiber-based power devices for soft electronics.

Main Methods:

• Scalable thermal processing of water-resistant thermoplastic elastomers and composites.
• Finite element modeling for mechanical analysis of fiber deformation.
• Fabrication of microtexture patterned functional surfaces on fibers.

Main Results:

• Successfully translated complex 2D triboelectric nanogenerator designs into 3D fiber formats.
• Demonstrated reliable, state-of-the-art electrical outputs from various mechanical deformations.
• Achieved high performance even under harsh environmental conditions.
• Generated hundreds of microamperes through integration with large, stretchable surfaces.

Conclusions:

• The developed fiber-based triboelectric nanogenerators offer a promising solution for powering wearable technologies and soft electronics.
• Scalable thermal processing and mechanical engineering enable high-performance, deformable power fibers.
• These fibers can be integrated into larger systems for significant electricity generation, even in challenging environments.