Abstract: Method of fabricating a microelectronic structure includes preparing a first structure having a first material different from silicon on a surface thereof and forming at least one covering layer of a second material by IBS (ion beam sputtering) and having a thickness of less than one micron, where the at least one cover layer has a free surface and molecular bonding the free surface to one face of a second structure where the at least one covering layer constitutes a bonding layer for the first and second structures.

Abstract: A data storage medium includes a carrier substrate having an electrode layer on the surface,and a sensitive material layer extending along the electrode layer, the volume whereof is adapted to be locally modified between two electrical states by the action of a localized electric field. A reference plane extends globally parallel to the sensitive material layerand is configured to pass along it at least one element for application of an electrostatic field in combination with the electrode layer. The storage medium also includes, parallel to the reference plane, a plurality of conductive portions forming part of the electrode layer and separated by at least one electrically insulative zone, the electrically conductive portions having, in at least one direction parallel to the reference plane, a dimension at most equal to 100 nm, where at least some of the conductive portions are electrically interconnected, the conductive portions defining data write/read locations within the sensitive material layer.