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  "path": "/invisible-to-the-human-eye-scientists-create-the-worlds-smallest-qr-code/",
  "publishedAt": "2026-02-26T22:08:15.000Z",
  "site": "https://scitechdaily.com",
  "tags": [
    "Technology",
    "Electronics",
    "Materials Science",
    "Microscopy",
    "Nanotechnology",
    "Vienna University of Technology"
  ],
  "textContent": "A 1.98-square-micrometer QR code, etched into ceramic thin film and verified by Guinness, showcases a new approach to ultra-dense, long-term data storage. How small can a QR code actually be? Researchers have now pushed the limits so far that the code can only be detected with an electron microscope. A team at TU Wien, working [...]",
  "title": "Invisible to the Human Eye: Scientists Create the World’s Smallest QR Code"
}