A flexible, thin strip wraps around the tip of a finger and collects sweat.
Scientists have come up with a device that harvests sweat from your fingertip to generate power — and you don’t even need to lift a finger to make it work. In fact, it can do its thing as you sit still or even sleep.
The flexible, thin strip wraps around the tip of a finger like a Band-Aid and converts chemicals found in human sweat into small amounts of electrical energy. Fingers constantly produce sweat, so the device can work without the wearer moving a muscle.
“By using the sweat on the fingertip — which flows out naturally regardless of where you are or what you’re doing — this technology provides a net gain in energy with no effort from the user,” said Joseph Wang, a professor of nanoengineering at UC San Diego and co-author of a paper describing the product, published in the journal Joule.
PRESENTED BY ROMANO PISCIOTTI
