One of my projects (that I actually get paid for in my day job) is a collaboration with #Austrian #startup #Cerabyte who are developing a new #archival #storage #technology using femtosecond lasers to write data onto ceramic glass film.
They just got into the #Guinness Book of #WorldRecords for creating the world's smallest #QRcode (1.98 square micrometres).
https://www.tuwien.at/tu-wien/aktuelles/news/news/weltrekord-der-kleinste-qr-code-der-welt