A method for ionization film formation to form a deposited film by ionizing vaporized particles with an ionization mechanism of the hot-cathode system and injecting the ionized particles into a substrate is provided. The system includes a plurality of transmitters for interrogating radio frequency identification tags attached to items on store shelves, a plurality of receivers separately located from the transmitters for receiving response information from the radio frequency identification tags. In a preferred application, the self-supporting microstructures produced in accordance with the method of the invention are used as electrically heatable resistance grids in a device for measuring weak gas flows. In addition, a transaction performance monitoring application operable to, in real-time, identify rejected claims and associated causes of the rejected claims. The cable management system comprises a cable guide arrangement configured to guide each of a plurality of cables from a line card such that the cables extend out from the line card unit and lie substantially within a plane.