The hereditary molecule DNA can store a great deal of information over long periods of time in a very small space. For a good 10 years, scientists have therefore been pursuing the goal of developing DNA chips for computer technology, for example for the long-term archiving of data. Such chips would be superior to conventional silicon-based chips in terms of storage density, longevity, and sustainability.
Four recurring basic building blocks are found in a DNA strand. A specific sequence of these blocks can be used to encode information, just as nature does. To build a DNA, the correspondingly coded DNA must be synthesized and stabilized. If this works well, the information is preserved for a very long time—researchers assume several thousand years. The information can be retrieved by automatically reading out and decoding the sequence of the four basic building blocks.
In this way, sustainability, full recyclability and high robustness even against electromagnetic pulses or power failures could be achieved, but also a high storage density of up to one billion gigabytes per gram of DNA.
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