The challenge of long-term data preservation is being met with a groundbreaking innovation: laser writing in glass. Unlike current digital storage methods that degrade over time and require constant upgrades, this new technology offers a solution designed to last for millennia.
Researchers have developed a system utilizing a specialized laser to encode data as microscopic deformations, called voxels, within a piece of glass. These voxels can then be read using an automated microscope and camera.
This method allows for the storage of vast amounts of data. A single 2-millimeter-thick piece of glass can hold approximately 4.84 terabytes, equivalent to two million books. The laser operates at 10 million pulses per second, enabling rapid data writing across hundreds of layers within the glass.
This advancement, referred to as Project Silica, has the potential to safeguard critical scientific research and historical documents for future civilizations, overcoming the limitations of conventional storage like hard drives and magnetic tapes.