The World’s Tiniest Printed Image Is the Width of a Human Hair
A Swiss company just set a new record for the world’s tiniest color image printed with an inkjet printer. At 0.0092 mm2, the image of three clown fishes swimming around sea anemones is about as small as a cross section of a human hair.
The technology, invented at the Swiss university ETH Zurich and later spun off into a private company called Scrona, uses quantum dots—nanoparticles that can be resized to emit different colors. Called 3D Nanodrip Technology, it can print images that are invisible to the naked eye. The image was printed at a resolution of 25,000 DPI (dots per inch) with layers of red, green, and blue quantum dots, according to a university press release.
Scrona is currently running a Kickstarter for a phone-based microscope. For $600, they’ll print any image you want at the size of a single grain of salt.