SYSTEM FOR ELECTRONIC DATA STORAGE

摘要

Device for storage of electronic data on a substrate, wherein a material provided in one or several layers on the substrate is changed chemically or physically on specified areas by means of electron bombardment from one or several electron guns at the same time as the material is exposed, or recently has been exposed, to an electromagnetic field from one or more electromagnetic sources on one or more areas which are at least as large as the area which is exposed by the electron guns. The electromagnetic field has a power which is large enough such that the total energy of change, in the area which the electron beam is set to affect physically or chemically, becomes high enough for affecting the material. The chemically or physically changed areas represent a binary 0 or 1, whereas non-modified areas which are connected to the modified area represent the opposite binary number.