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Memory chip that gets erased when exposed to blue light for security

For sensitive shipments, a new memory chip that gets erased when exposed to blue light, like daylight, could be used to alert recipients to potential tampering.   The chip uses a thin semiconductor attached to a material that, when stretched, will shrink back to its original position slowly, or immediately when exposed to certain wavelengths of light. This could be useful as a barcode printed inside sensitive shipments. If the shipment is opened and exposed to daylight before reaching its destination, the memory chip would get cleared, which would alert the recipient to tampering upon receipt.   The research was led by Parag Deotare, an assistant professor of electrical engineering and computer science at the University of Michigan. https://optoexcitonics.engin.umich.edu/   Read more: https://news.engin.umich.edu/2020/09/burn-after-reading/   ------ Watch more videos from University of Michigan Engineering and subscribe: https://www.youtube.com/michiganengineering   The University of Michigan College of Engineering is one of the world’s top engineering schools. Michigan Engineering is home to 12 highly-ranked departments, and its research budget is among the largest of any public university. http://engin.umich.edu   Follow University of Michigan Engineering: Twitter: https://twitter.com/umengineering Facebook: https://facebook.com/michigan.engineering Instagram: https://instagram.com/michiganengineering   Contact University of Michigan Engineering: https://engin.umich.edu/about/contact/