The QR code in this image broke a Guinness World Record — and it marks the beginning of a revolution that could completely transform the way we store data.
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What makes this code extraordinary is its dimensions.
Its area is just 1.98 square micrometers — smaller than most bacteria — earning it the Guinness World Record for the world's smallest QR code.
It was created through a collaboration between researchers at the University of Vienna and the German startup Cerabyte, and the Guinness record is actually the least interesting part of the story.
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The pixels of this code are so small that even wavelengths of visible light are larger than they are. For this reason, a focused ion beam was used to etch the code onto a thin ceramic surface.
The key challenge solved in this experiment was creating a durable engraving — one that neither degrades nor breaks down under harsh chemical conditions or high temperatures.
An engraving at this scale makes it possible to pack 2 terabytes of data onto a single A4-sized surface. Even more remarkable is the extraordinary durability of the stored data — it can survive for thousands of years under extreme conditions such as fire or freezing temperatures, with no power supply required whatsoever.
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Cerabyte was founded in 2022 with the stated goal of developing an alternative to existing data storage methods. Major companies including WD have invested in the startup.
Every type of storage media in use today suffers from degradation within just a few years, and is vulnerable to magnetic fields, heat, cold, and chemical exposure. The result: vast amounts of data are lost, and the data that is preserved generates mountains of hardware waste while consuming enormous amounts of energy.
This record-breaking achievement is an important proof of concept — demonstrating that data can be written and read in this way. The next steps will involve transitioning from the company's active prototypes to commercial machines, testing the technology at significantly greater scale, and signing usage agreements with real-world technology companies.
If the technology succeeds, it will completely transform long-term data storage, prevent data loss, and eliminate enormous amounts of hardware and energy waste.
Image: TU Wien
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👋 Hi, I'm Shlomo Strauss — follow me for more content on science and technology.