Engineers develop new magnetic ink to print self healing devices that heal in record time

A team of engineers at the University of California San Diego has developed a magnetic ink that can be used to make selfhealing batteries, electrochemical sensors and wearable, textilebased electrical circuits. The key ingredient for the ink is microparticles oriented in a certain configuration by a magnetic field. Because of the way theyre oriented, particles on both sides of a tear are magnetically attracted to one another, causing a device printed with the ink to heal itself. The devices repair tears