In the digital age, every byte of data needs to go somewhere—and preferably stay there a long time. That last part is a major problem when it comes to data-storage systems, which typically last less than 20 years. A group of Harvard chemists is trying to solve the issue with an innovation that resembles tiny drops of ink.
source https://techxplore.com/news/2021-10-chemists-dye-method-long-term-storage.html
