Measuring your blood sugar may be weirdly trendy, but it you’re one of the 30 million Americans with diabetes, it’s mostly a pain. A literal pain. People with diabetes either have to prick their fingers and draw blood or wear a monitor with a tiny tube inserted into their skin to continuously measure glucose in the fluid between cells. And sticking a needle in yourself isn’t exactly pleasant.
A new biosensor described in a paper published Wednesday in Science Advances suggests a workaround. Instead of a finger prick, an extremely thin, skin-like patch instead uses electrical signals to drive glucose out of nearby blood vessels to the skin’s surface to be measured. The whole thing is powered by a paper battery, and looks a little like a trendy temporary tattoo….