One important parameter that is often not considered in the formation of laser-induced periodic surface structures (LIPSS) is the laser-induced oxidation produced when oxidation prone materials are irradiated in air environment. In this work, we characterize the response of the oxidation prone hard-coating material chromium nitride and explain the findings with finite-difference time-domain calculations. We also employ complementary surface and in-depth analytic techniques to reveal morphological, chemical and structural features of different types of surface structures and LIPSS produced on titanium-based substrates.
Laser-induced periodic surface structures (LIPSS, ripples) are a universal phenomenon that can be observed on almost any material after the irradiation by linearly polarized laser beams, particularly when using ultrashort laser pulses with durations in the picosecond to femtosecond range. During the past few years significantly increasing research activities have been reported in the field of LIPSS, since their generation in a single-step process provides a simple way of nanostructuring and surface functionalization towards the control of optical, mechanical or chemical properties. In this contribution current applications of LIPSS are reviewed, including the colorization of technical surfaces, the control of surface wetting, the tailoring of surface colonization by bacterial biofilms, and the improvement of the tribological performance of nanostructured metal surfaces.
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