Chemists have created a system of fluorescent dyes in the form of tiny spots: information is written there in binary code. It can only be read by a fluorescent microscope.

The authors of the work have created a new way of storing and reading information. They used seven commercially available fluorescent dyes that emit light in different ranges.

Each spot of the same color acted as a bit of information in ASCII encoding, and the presence or absence of a dye in a certain place conveys information about “1” or “0”. The authors put a dot on the epoxy coating.

To test how accurately the information was read, the authors wrote down several pages of text from Experimental Research on Electricity by Michael Faraday in this way. They then used a fluorescent microscope to decipher the message.

According to the researchers, the information recorded in this way can be read about 1000 times without significant losses.

As a result, the authors were able to write data at a speed of 128 bits per second, and read at 469 bits per second, which is faster than all known molecular methods of storing information.