Magazine article ASEE Prism

Magnetic Healing

Magazine article ASEE Prism

Magnetic Healing

Article excerpt

One of the problems with wearable electronics is that the folding, wrinkling, and fraying of fabrics can, over time, break circuits. A solution may be at hand, however. Engineers at the University of California, San Diego led by Joseph Wang, head of the Center for Wearable Sensors, have invented a magnetic ink that can be used to print wearable circuits, electrochemical sensors, and self-healing batteries. In a promotional video released by the team, a circuit printed on the sleeve of a T-shirt and linked to a small battery and LED light is sliced in half. The LED goes out, but within a few seconds, it flickers back to life. Other researchers have made self-healing batteries and circuits before, but they all required an external trigger to start the process, and the healing took minutes or days to complete. …

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