LEDs powered by yarn battery

Researchers have fabricated rechargeable batteries by using highly conductive yarns that have a diameter and flexibility similar to that of a piece of cotton yarn. The new yarn battery can be woven into fabric and worn as a wristband or other type of clothing to power watches, LEDs, pulse monitors, and other small personal electronics. The researchers, led by Chunyi Zhi, Professor of Materials Science and Engineering at the City University of Hong Kong, have published a paper on the new yarn battery in a recent issue of ACS Nano.