In a method for imprinting a layer of material, a nanotemplate is impressed into a material layer, and the nanotemplate is maintained impressed in the material layer until a geometric trench corresponding to geometry of the nanotemplate is formed in the layer, and the nanotemplate is then removed from the material layer. A set of bands are determined per non-overwriting storage device. The multi-stage positioning means includes a rotary piece and a cover plate. The error of the estimate is then computed. A number of such tubes are arranged in side-by-side relation and are covered by a plastic sheet cover layer.