Reactive multilayer systems (RMS) were fabricated by magnetron sputtering deposition of Al and Ni nanolayers on a copper substrate with textured surface topography, the copper substrate was subsequently removed in order to obtain free-standing RMS. The morphology of the substrate surface impacted the microstructure of the produced RMS, therefore the RMS have a textured surface. The samples were papered with a surface texture in different orientations (0°, 45°, and 90°). Besides RMS with the same characteristics were prepared on Si wafer (flat surface) in order to compare the propagation behavior of the RMS with a textured surface and RMS with a relatively flat surface. During the ignition test, the propagation front was recorded by a High-Speed camera with a resolution of 50,000 fps. In the videos, it is possible to observe the effect of the textured surface of the RMS on the propagation front of the reaction.

The work is supported by the Deutsche Forschungsgemeinschaft (DFG, grants Scha 632/29 and Scha 632/30 and Scha 632/27, "DFG-Gerätezentrum")