Abstract
We report the growth of conical microstructure arrays on a stainless steel substrate under multi-pulsed Nd:YAG laser irradiation (wavelength of 1.064 μm, pulse duration of 300 ns, repetition rate of 5 kHz) at atmospheric air pressure. The average period of microcones is 70 μm, and they protrude 50–60 μm above the substrate. At an air pressure of 1 Pa, the well-defined conical shape is lost and the resulting microstructure shows a smaller period and height. At 10-3 Pa, only small protrusions separated by about 5 μm are observed. The different mechanisms involved in the growth of conical microstructures are discussed.
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42.62.-b; 81.65.-b
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Dolgaev, S., Fernández-Pradas, J., Morenza, J. et al. Growth of large microcones in steel under multipulsed Nd:YAG laser irradiation. Appl. Phys. A 83, 417–420 (2006). https://doi.org/10.1007/s00339-006-3562-8
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DOI: https://doi.org/10.1007/s00339-006-3562-8