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13 March 2024 Formation and characterization of 2D-LIPSS on Ti surfaces with GHz burst mode femtosecond laser pulses
Shota Kawabata, Felix Sima, Shi Bai, Kazunari Ozasa, Kotaro Obata, Godai Miyaji, Koji Sugioka
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Proceedings Volume PC12873, Laser-based Micro- and Nanoprocessing XVIII; PC1287306 (2024) https://doi.org/10.1117/12.3000114
Event: SPIE LASE, 2024, San Francisco, California, United States
Abstract
The GHz burst mode femtosecond (fs) laser pulses have attracted considerable attention because they can perform better quality and higher efficiency ablation compared to the conventional irradiation scheme of fs pulses (single-pulse mode). Recently, we have demonstrated that the GHz burst mode fs laser pulses can create two-dimensional (2D) periodic surface structures (LIPSS) on Si surfaces. In this paper, we extend the GHz burst mode fs laser processing to form LIPSS on Ti plates. Our aim was to further investigate the more detailed mechanism and explore practical applications. Although the material characteristics of Ti are significantly different from Si, the GHz burst mode fs laser pulses can also create 2D-LIPSS. Then, mesenchymal stem cells cultured on the formed 2D-LIPSS were found to exhibit different behavior on 1D-LIPSS as compared with bare Ti surfaces.
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Shota Kawabata, Felix Sima, Shi Bai, Kazunari Ozasa, Kotaro Obata, Godai Miyaji, and Koji Sugioka "Formation and characterization of 2D-LIPSS on Ti surfaces with GHz burst mode femtosecond laser pulses", Proc. SPIE PC12873, Laser-based Micro- and Nanoprocessing XVIII, PC1287306 (13 March 2024); https://doi.org/10.1117/12.3000114
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KEYWORDS
Femtosecond phenomena
Titanium
Femtosecond pulse shaping
Laser irradiation
Silicon
Laser processing
Picosecond phenomena
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