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World's smallest QR code can store data for thousands of years — but you need an electron microscope to see it
Scientists created a tiny matrix that stores data by etching its grid into a thin ceramic film with a focused ion beam.
The world's smallest QR code is only visible with an electrone microscope. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing ...
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