Researchers have created a thin-film polymer metamaterial that can be incorporated inside packaging that could change colour if internal conditions within the packaging change.
Designed by materials scientists at Rice University and the Massachusetts Institute of Technology (MIT), the product mixes polymers into metamaterial that changes colour – once they’re exposed to ions in the environment – depending on the ions’ ability to infiltrate the hydrophilic (water-loving) layers. Ned Thomas, the William and Stephanie Sick Dean of Rice’s George…
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