The smallest hard disk storing information atom by atom was created

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What that means ? Theoretically, this would allow the data of all books written by humans untill date to be printed on a single post stamp because the storage density of 500 Terabits per square inch. The complete details of the study have been published in the journal Nature Nanotechnology. Researchers have been moving atoms using scanning tunneling microscopes since the early 1990s. Using the sharp needle of a scanning tunneling microscope, the researchers were able to probe the atoms one by one. Every bit consists of two positions on a surface of copper atoms, and one chlorine atom that can be adjusted back and forth between these two positions. That memory can be easily scaled up to a big size. The researchers stored various texts, including Charles Darwin’s On the Origin of Species. However this system only works at liquid nitrogen temperatures and probably will be possible in large data centers.

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