Periodic structure on a Fe(30 nm)/Al(120 nm) thin metallic film on glass substrate produced by Laser Interference Metallurgy. The sample was irradiated with an interference pattern produced
with three laser beams. Because planar laser waves are applied, this structuring can proceed for the macroscopic diameters of the laser beam and consequently it allows a fast functionalization of surfaces with dimensions of technical relevance. 20 µm scan. Imaged with the MFP-3D AFM.
Image courtesy of A. Lasagni, Department of Materials Science,
Functional Materials, Saarland University, Germany.