This new biosensor runs on your sweat
Scientists at Tokyo University of Science have built a new biosensor that runs on your sweat—literally.
Using special enzyme ink, they print biofuel cells onto paper, which turn the lactate in sweat into electricity.
These new cells are way more efficient than older versions.
The team's single-step ink lets them print both parts at once
The team's single-step ink lets them print both parts of the cell at once, making production simpler and faster.
The sensors work within normal human sweat ranges (1-25 mM lactate), although they may not yet be practical for everyday use.
Can run fitness meters for over an hour
These sweat-powered sensors can run fitness meters for over an hour just from artificial sweat, and can support Bluetooth trackers.
That means you could monitor things like workout intensity or dehydration potentially without needing to swap out batteries—pretty handy for athletes or anyone interested in their health.