Researchers at the City University of New York (CUNY) confirmed Possibility of ultra-dense data recording in Diamond defects. Many levels of information can be written in a small space, similar to writing to a multi-level flash memory cell. One square inch of such media can hold 25GB of data, like a large multi-layer Blu-Ray disc, and the storage reliability will be unimaginable.
There are many types of defects in crystals. These are stable disturbances in the crystal lattice that can be used to do many interesting things. For example as quantum bits or as data storage cells. Another question is how to write information there and how to read it later. Unfortunately, the practical implementation usually cannot keep up with advanced ideas.
CUNY scientists tested a way to record data in the form of charge changes of atoms in a diamond defect. Furthermore, the same atom can be written (charged) to different levels if you “irradiate” it with different wavelengths – light of different colors. As can be seen from the work done, the shift can be very, very small – significantly lower than the diffraction resolution, which gives the highest recording density up to working with individual atoms.
In an experimental setup, scientists were able to achieve a recording density of 25 GB per square inch. They changed the energy states of the atoms nitrogen-substituted sites in diamond. “It’s like turning on little colored lights in a crystal.” – Researchers explain the process in popular terms. For the more serious reader: research data published In the magazine Nature nanotechnology.
Let us clarify that the experiment was carried out under cryogenic cooling conditions. For these operations, data was written and rewritten using low energy consumption. For practical application, this technology needs to undergo crucial changes that may occur in the near or not so near future.