Using 3D printing to create 3D circuits: Researchers unlock self-healing boards

Singapore team develops CHARM3D for 3D circuits which self-heal using Field's metal, enabling smaller, durable, and recyclable electronics.

: Researchers from the National University of Singapore have introduced CHARM3D, a novel 3D printing technique for circuits that can heal themselves. This technique uses Field's metal for smoother and faster printing, creating durable and recyclable structures. The potential applications include healthcare innovations like wearable sensors. The team is aiming for industrial adoption and exploring commercialization opportunities.

Researchers at the National University of Singapore have pioneered a 3D printing method called CHARM3D, which revolutionizes the creation of three-dimensional circuits. These circuits are capable of self-healing, which marks a significant advancement over traditional 2D circuit boards.

The CHARM3D technique employs Field's metal, an alloy of indium, bismuth, and tin with a low melting point of around 62°C. This allows for the creation of smooth and uniform 3D metal microstructures, which can range from 100-300 microns in width.

Potential applications for CHARM3D are extensive, particularly in healthcare where sensors can monitor vitals without skin contact. The research team, led by Benjamin Tee, is also considering further industrial-scale production and broader commercialization opportunities.

3D printingCHARM3DElectronics