The present invention relates to biomedical devices, and particularly contact lenses comprising a polymer having entangled therein at least one polymer comprising repeating units from N-acrylamide. Control data controls which receivers insert which indexed content and when the indexed content is inserted into a received program channel, allowing for playback of songs from playlists, tiered subscription services, and sponsorship of broadcast program channels to provide market-directed content to selected receivers and listeners. In some embodiments the total transmit radiation pattern provides an azimuth coverage of 360 degrees. The resultant aluminum-alloy material has a restored mechanical strength with only a minor, but acceptable, decrease in original ductility. The pigment formulation may comprise of either a paint or an ink composition, which is applied manually onto multi-filamentous nets or mesh.