A data storage unit is disclosed. The data storage unit can comprise a data storage layer having a plurality of data storage areas. Each data storage area can be configured to carry at least one bit of data. An electron beam emitter can be configured to selectively direct a beam of electrons toward the...http://www.google.fr/patents/US7082095?utm_source=gb-gplus-shareBrevet US7082095 - System and method for storing data
