Medical implants could soon be powered by batteries the size of a grain of sand thanks to development by scientists at Harvard and the University of Illinois. The images show a battery being created using a custom-made 3D printer with special inks.
The inks developed have particular electrochemical properties allowing them to harden as soon as they leave the printer. The 3D printed Li-Ion micro-batteries are similar in their life expectancy, energy density, and charge and discharge rates to normal batteries on the market.
For a closer look, the team’s tiny invention is described in detail in their paper, found in