Technology: Smallest harddisk that writes 500 Terabits per square inch (Tbpsi)
The University of Delft pushed the limits of datastorage to the level of atoms. Scanning tunneling microscopy (STM) was used to push around chlorine atoms over a raster of copper atoms. The team of researchers was inspired by the QR code system. The technique is not expected to hit the market anytime soon, but it is still a neat little trick to watch:
The video supplied by the university of Delft is very explanatory:
Published article:
A kilobyte rewritable atomic memory, Nature Nanotechnology, dx.doi.org/10.1038/nnano.2016.131