MIT News reports researchers at MIT and the Technical University of Munich have developed a tiny fuel cell that could convert glucose in a person's body into electricity - just the thing for powering various medical implants.
MIT's Jennifer Rupp came up with the idea while getting a routine blood-glucose test near the end of her pregnancy:
In the doctor’s office, I was a very bored electrochemist, thinking what you could do with sugar and electrochemistry. Then I realized, it would be good to have a glucose-powered solid state device. And Philipp [Simons] and I met over coffee and wrote out on a napkin the first drawings.