Most color-printing is still harmful to the environment because certain pigments in the ink contain toxic elements. Although Soya-based inks are seen as a more environmentally friendly printing method, Russian scientists decided to dig deeper and move away from the concept of ink’s composition, but rather towards how color is actually perceived.
Their research found a material that reflects light like a soap bubble: the color that we are able to see depends on how thick the walls of a bubble are. This effect is called interference, and can be used to a new technique that researchers at the University at St. Petersburg University have created, nano-technology.
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