Photos: Awesome things you didn't know were 3D printed

Tiny 3D printed batteries

A Harvard materials scientists created a way to produce "ink" using nanoparticles of lithium titanium oxide. Mixed with water and ethylene glycol, the substance makes up the anodes for lithium ion batteries. The ink is distributed through a 3D printer with custom-made syringes at room temperature, rather than the extremely high temperatures that the machines normally work at. The idea is these could replace traditional battery cells in the near future. 

Image: MIT

By Lyndsey Gilpin

Lyndsey Gilpin is a former Staff Writer for TechRepublic, covering sustainability and entrepreneurship. She's co-author of the book Follow the Geeks.