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Paint the town red

发布时间:2019-03-06 14:15:17来源:未知点击:

By Eugenie Samuel in Boston IMAGINE what you could do with a paint that thinks it’s a laser. You could brighten up your neighbourhood by decorating walls or street signs, or create a new form of illumination for bridges or other landmarks. The idea may sound far-fetched but it could just become a reality. In 1999, two groups of scientists who were developing new dyes noticed bizarre peaks in the light emission spectra of their mixtures. Unlike fluorescent dyes or light-emitting polymers,