| ▲ | Programmable pigments: Photochromic nanoparticle inks for rewritable tattoos(cell.com) | |
| 22 points by Bluestein 17 hours ago | 1 comments | ||
| ▲ | qwertytyyuu 31 minutes ago | parent [-] | |
That is so cool. I wonder if this allows for printing images with some kind of 3d printer like thing with a weak uv laser | ||