A tiny picture invisible to the naked eye now claims the Guinness World Record for tiniest inkjet-printed color image.
Measuring only 0.0092 mm2 -- the size of a cross-sectional area of a human hair -- the image reveals clown fishes swimming around a sea anemone. It was created by a team of researchers at ETH Zurich and ETH start-up company Scrona.
Printing Color Images Without Ink
ETH Zurich used its proprietary 3D NanoDrop printing technology to create the image. So-called quantum-dots, known as nanoparticles that emit light of a specific color, were used to achieve the level of accuracy and intensity in such a small space. A special microscope is needed to view the image.
The scientists engineered the colors by tuning their size, to, say, alter the color orange to yellow. When creating this particular image of clown fish, layers of red, green and blue quantum dots were printed at a 25,000 DPI resolution. The scientists achieved 24-bit color space by controlling the thickness of the deposited quantum dot layers.
Artists Discover 3-D Printing
"Using a novel 3-D nano printing technology, we will create what even upscale computer chip fabrication processes wouldn't realize," the Kickstarter campaign says. "Your image will be condensed to the size of a single grain of salt, made of pure gold or fluorescent nanoparticles."
Via ETH Zurich