A flexible light guide film having a light-adjusting structure in the form of a lenticular-like microstructure on the bottom side of the light guide film. 09 as a relation of a total electrode area Sb of the battery to a rated output Pm2max of a motor MG2 in power operation and a second requirement of Sb>0. In another embodiment, the present invention relates to a process for forming one or more fibers, nanofibers or structures made therefrom on a wide variety of structures or surfaces where such fibers andor structures are designed to sequester, carry andor encapsulate one or more substances.