Durable data storage in nanostructures of quartz




Researchers have developed a way to store data in quartz and retrieval using a femtosecondenlaser or ultrashort pulse laser. Data stored it with the technique “billions of years” should be able to survive.

The research team from the English Southampton presented the technology already in 2013, together with the Technical University Eindhoven. The group has the technology in the meantime refined and presents the latest findings Wednesday, February 17th at a conference in San Francisco.

For the “data storage method 5d ‘, use is made ​​of an ultra short pulse laser in which three different layers in the quartz store data. The encoding of the information is carried out by polarization differences that can be read again by an optical microscope and a polarization filter. The different axes, or the orientation and size where the information is stored with are the “five-dimensional” to the method. The small pits or nanodots which bits represent, at a distance of five micrometers apart. Each nanodot made by the laser is good for three bits of information.

Universal Declaration of Human Rights

The glass, quartz, or in fact, remains stable up to temperatures of 1000 degrees Celsius and decays almost impossible under normal conditions. It would therefore be a good way to save data for a very long time. The group tested the method in 2013 with text file 300kb of data.

Meanwhile, there are several important documents stored in quartz, such as the Universal Declaration of Human Rights, Newton’s Opticks, Magna Carta and the King James Bible. The copy of the Universal Declaration of Human Rights was recently presented to UNESCO in connection with the International Year of Light.

The new paper ‘5D Data Storage by Ultrafast Laser Writing in Glass “will be presented next Wednesday.


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