Alert device for sunburn

| 12/03/2009

(BBC): Researchers have developed an indicator that turns an appropriate shade of pink to alert wearers of sunburn. The thin film device could be worn as a wrist band to warnwearers they risk receiving a potentially harmful dose of ultraviolet rays. UV rays drive a chemical reaction in the indicator, releasing an acid into a dye, and causing it to change colour. The research team from the University of Strathclyde report their work in the journal Chemical Communications. Professor of chemistry, Andrew Mills, who led the team, describes this combination of a UV-driven reaction with an acid-sensitive dye as "intelligent ink".

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