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Some foods and medicines, such as many COVID-19 vaccines, must be kept cold. As a step toward a robust, stable technique that could indicate when these products exceed safe limits, researchers in ACS Nano report a class of brilliantly colored microcrystals in materials that become colorless over a wide range of temperatures and response times. As a proof of concept, the team packaged the color-changing materials into a vial lid and QR code.
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For on-demand information display, scientists headed by Prof. Tao Chen at the Ningbo Institute of Materials Technology and Engineering (NIMTE) of the Chinese Academy of Sciences have built a flexible near-infrared light-writing multicolor hydrogel system.
Researchers Create Multicolor Fluorescent Hydrogel Display System miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.