Topic: Technology

Scientists at TU Wien created a tiny QR code that can only be seen with an electron microscope. This breakthrough could lead to long-term data storage that lasts hundreds or thousands of years.

Researchers have made a tiny QR code that is smaller than most bacteria. It measures just 1.98 square micrometers and was created by scientists at TU Wien, working with data storage company Cerabyte. This achievement has been officially confirmed and recorded in the Guinness Book of Records.

The team used ceramic materials to create the QR code. They engraved it into a thin layer using focused ion beams. Each pixel measures just 49 nanometers, which is about ten times smaller than the wavelength of visible light. As a result, the pattern is completely invisible under normal conditions and cannot be resolved using visible light.

The storage capacity is impressive. More than 2 terabytes of data could fit within the area of a single A4 sheet of paper using this approach. Unlike conventional storage systems, these ceramic data carriers can remain intact indefinitely and do not require any energy to maintain the stored information.

This breakthrough has major implications for long-term data storage. Traditional storage technologies such as magnetic drives or electronic systems tend to degrade within a few years. In contrast, encoding information into ceramic materials could preserve it for hundreds or even thousands of years.

Why It Matters

As we generate more and more data, we need ways to store it that last for the long term. This breakthrough could help us do just that, ensuring our knowledge is preserved for generations to come.

Key Facts

• Scientists at TU Wien created a tiny QR code that measures 1.98 square micrometers
• The QR code was engraved into a thin ceramic layer using focused ion beams
• Each pixel measures 49 nanometers, which is about ten times smaller than the wavelength of visible light
• More than 2 terabytes of data could fit within the area of a single A4 sheet of paper
• Ceramic data carriers can remain intact indefinitely and do not require any energy to maintain stored information

Key Terms

QR code

A type of barcode that stores information

Implications

As we generate more and more data, we need ways to store it that last for the long term. This breakthrough could help us do just that, ensuring our knowledge is preserved for generations to come.