Liquid Metal Self-Healing Circuit LiquidCircuit Unveiled: Electronic Devices Automatically Recover Function Within 60 Seconds After Fracture

Liquid Metal Self-Healing Circuit LiquidCircuit Unveiled: Electronic Devices Automatically Recover Function Within 60 Seconds After Fracture

On July 11, 2030, Tsinghua University's Flexible Electronics Laboratory and Samsung Electronics jointly unveiled LiquidCircuit, a liquid metal self-healing circuit technology. The technology encapsulates gallium-indium alloy liquid metal within elastic polymer microchannels. When a circuit fractures due to bending, stretching, or cutting, the liquid metal automatically flows to the break point under capillary action, re-establishing the conductive pathway within 60 seconds.

In standardized testing, LiquidCircuit recovered more than 99.3% of its electrical conductivity within 60 seconds after 500 bending cycles, 100 stretches to 200% strain, and 20 cuts. This recovery speed far exceeds previously reported self-healing conductive materials, which typically require minutes to hours.

The key breakthrough lies in the "hierarchical microchannel" design — primary channels handle normal conduction, while backup microchannels are activated when the primary channel fractures, guiding the liquid metal to bypass the damaged area. This design enables the circuit to repair not only simple fractures but also complex multi-point damage.

Samsung plans to first apply LiquidCircuit technology in its 2031 Galaxy Z Fold series of foldable phones, addressing the industry pain point of circuit fatigue fractures in foldable screen bending zones.

However, liquid metal costs approximately 50 times more than traditional copper wire, making it currently suitable only for high-end consumer electronics and aerospace applications where reliability demands are extremely high.