Sinev Dmitry A, Yuzhakova Daria S, Moskvin Mikhail K, Veiko Vadim P
Faculty of Laser Photonics and Optoelectronics, ITMO University, 49 Kronverksky Pr., bldg. A, 197101 St. Petersburg, Russia.
Institute of Automation and Electrometry of the Siberian Branch of the Russian Academy of Sciences (IA&E SB RAS), 1 Academician Koptyug ave., 630090 Novosibirsk, Russia.
Nanomaterials (Basel). 2020 Oct 29;10(11):2161. doi: 10.3390/nano10112161.
Laser-induced periodic surface structures (LIPSSs) spontaneously appearing on the laser-treated (melted or evaporated) surfaces of bulk solid materials seem to be a well-studied phenomenon. Peculiarities of oxidative mechanisms of LIPSS formation on thin films though are far less clear. In this work, the appearance of oxidative LIPSSs on thin titanium films was demonstrated under the action of commercially available nanosecond-pulsed Yb-fiber laser. The temperature and energy regimes favoring their formation were revealed, and their geometric characteristics were determined. The period of these LIPSSs was found to be about 0.7 , while the modulation depth varied between 70 and 110 nm, with high stability and reproducibility. It was shown that LIPSS orientation is rather easily manageable in the regimes of our interest, which could provide a way of controlling their properties.
在块状固体材料经激光处理（熔化或蒸发）的表面上自发出现的激光诱导周期性表面结构（LIPSS）似乎是一个已得到充分研究的现象。然而，关于薄膜上LIPSS形成的氧化机制的特性却远未明确。在这项工作中，展示了在商用纳秒脉冲镱光纤激光器的作用下，薄钛膜上氧化LIPSS的出现。揭示了有利于其形成的温度和能量条件，并确定了它们的几何特征。发现这些LIPSS的周期约为0.7 ，而调制深度在70至110纳米之间变化，具有高稳定性和可重复性。结果表明，在我们感兴趣的条件下，LIPSS的取向相当容易控制，这可为控制其特性提供一种方法。
