An optical storage disc stores storage information and includes track information. The prosthesis has an expandable frame, a plurality of proximal anchors, and a plurality of distal anchors, where the various anchors are connected to the frame. The predetermined sequence of requests for access to physical blocks corresponds to a predetermined sequence of requests for access to file of the memory that can be selected by the device. The contaminated gas phase is carried out of the phase reaction chamber by a carrier air. The thickness of the bulk is selected to be less than the skin layer for the microwave frequency used in the bulk.