Using millions of tiny fibers of nanocellulose sheathed with a
conductive polymer coating, scientists have created sheets of paper that
can store significant amounts of electric charge. Dubbed "power paper," the material is able to be recharged
many hundreds of time, and in mere seconds. It is also
no toxic chemicals or heavy metals to create, and may offer a renewable
and prolific way to provide energy to all manner of devices.
The 3D printing revolution brings with it a harmful side effect: the special inks that it uses are derived (for the most part) from environmentally-unfriendly processes involving fossil fuels and toxic byproducts. But now scientists at Chalmers University of Technology have succeeded in using cellulose – the most abundant organic compound on the planet – in a 3D printer. They were also able to create electrically-conductive materials by adding carbon nanotubes.