新型纹身墨水可被光开启和关闭

TATTOOS may be radically reimagined following the development of inks that can appear or disappear depending on light exposure. “You can simply turn the tattoo off whenever you don’t want to see it and it disappears from view,” says Carson Bruns at the University of Colorado Boulder. Bruns has had a fish scale tattoo using this method for the past two years, and says he has had no known side effects and no fading. Instead of traditional inks, Bruns and his colleagues employ photochromic dyes, which change from a transparent state to a coloured one when exposed to certain wavelengths of light. They call the new technology, which has been tested on silicone, “PhotoTat”. …