Figure 4 | Scientific Reports

Figure 4

From: Scaling the productivity of laser structuring processes using picosecond laser pulses at average powers of up to 420 W to produce superhydrophobic surfaces on stainless steel AISI 316L

Figure 4

Laser induced periodic surface structures (LIPSS) on polished (SRz = 0.076 μm) stainless steel AISI 316L formed with different hatching distances dh: (a) 1/4 db, (b) 1/8 db, (c) 1/16 db. The red double arrow indicates the direction of the polarization for all applied hatching distances. Process parameters: λ = 1030 nm, f = 100 kHz, EP = 1.4 mJ, db = 500 μm, H = 0.71 J/cm2, v = 1 m/s.

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