When water hits a glass surface, it usually just spreads itself out. But when water containing the organic molecule propylene glycol (PG) hits glass, it comes alive. In a manner of speaking.

Under the right conditions, ordinary clear water droplets on a transparent surface can produce brilliant colors, without the addition of inks or dyes. This iridescent effect is due to "structural ...

Engineers have found that under the right conditions, ordinary clear water droplets on a transparent surface can produce brilliant colors, without the addition of inks or dyes. Engineers at MIT and ...

Lauren Zarzar thinks liquids deserve some materials attention. “Liquids are the most dynamic and responsive materials we have,” the Pennsylvania State University researcher says. Unlike solids, she ...