Reconfigurable double-sided smart textile circuit with liquid metal

Area of Science:

• Materials Science
• Electrical Engineering
• Wearable Technology

Background:

• Printed circuit boards (PCBs) face limitations in flexibility and weight for advanced electronics.
• Existing smart textiles often lack sufficient electrical properties or double-sided capabilities.
• There is a need for adaptable and multifunctional electronic textiles.

Purpose of the Study:

• To develop a novel double-sided smart textile circuit.
• To overcome limitations of conventional PCBs and single-sided smart textiles.
• To enable dynamic circuit customization for wearable electronics.

Main Methods:

• Utilizing liquid metal and silver flakes for conductive pathways on textiles.
• Implementing pressure-induced sintering for circuit formation and modification.
• Demonstrating double-sided circuit configurations without via holes.
• Showcasing customization through cutting and stitching.

Main Results:

• Successful creation of double-sided textile circuits with tunable insulation/connection.
• Demonstration of dynamic circuit alteration via pressure and physical manipulation.
• Fabrication of functional prototypes: wristband with LED, reversible teddy bear cloth, and heating glove.
• Achieved enhanced utility beyond traditional PCB technologies.

Conclusions:

• The developed smart textile offers a versatile platform for multifunctional wearable electronics.
• This technology bridges the gap between rigid PCBs and flexible smart textiles.
• It enables real-time customization and novel applications in wearable devices.