Beyond wires: Laser-based bubble printing technique creates ultra-flexible liquid metal circuits

https://www.eurekalert.org/news-releases/1064174

"high-precision wiring patterning liquid metal colloidal particles of eutectic gallium-indium alloy... wiring patterns onto surfaces using particles moved by bubble flow... fs laser beam heat EGaIn particles, generating microbubbles guiding them into exact lines on flexible-glass surface... improve conductivity replacing resistive gallium oxide layer with conductive silver via galvanic replacement, enabling thin, conductive, flexible.... bendable, stretchable, highly conductive circuits, wearable sensors, medical implants"