Control of short-pulsed laser induced periodic surface structures with machining - Picosecond laser micro/nanotexturing with ultraprecision cutting
Control of short-pulsed laser induced periodic surface structures with machining - Picosecond laser micro/nanotexturing with ultraprecision cutting
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DOI：
10.1016/j.precisioneng.2018.10.013
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发表时间：
2019-01
期刊：
影响因子：
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通讯作者：
S. Kodama;Shinya Suzuki;K. Hayashibe;K. Shimada;M. Mizutani;T. Kuriyagawa
中科院分区：
文献类型：
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作者：
S. Kodama;Shinya Suzuki;K. Hayashibe;K. Shimada;M. Mizutani;T. Kuriyagawa
已经研究了在精细周期性表面结构（下文中，称为LIPSS：激光诱导周期性表面结构）的制造中的短脉冲激光，以减少摩擦、改善润湿性的控制并改善生物亲和性。与传统的超短脉冲激光相比，短脉冲激光具有成本低、辐照稳定等优点，但由于其峰值能量密度较低、原理不明确等原因，使得短脉冲激光制备LIPSS的过程难以控制。在激光照射之前优化表面形状可以使得更容易控制使用短脉冲激光的制造，因为已经报道了LIPSS是由于在激光照射期间改变表面粗糙度之后由等离子体波诱导的表面等离子体激元而制造的。所提出的方法涉及切割表面，以协助控制LIPSS的短脉冲激光：工件的表面照射后，直微槽制造超精密切割。实验结果表明，微槽可以制成高纵横比的直线LIPSS，并且扩大了制作LIPSS时实验条件的有效注量范围。新方法被证明是有效地控制LIPSS，并突出了激光照射前的表面形状的LIPSS制造的重要性。
Short-pulsed laser in the fabrication of fine periodic surface structures (hereinafter, referred to as LIPSS: laser induced periodic surface structures) has been studied to reduce friction, improve control of wettability and improve bioaffinity. While it has low cost and stable irradiation compared with the ultrashort-pulsed laser traditionally used, it is difficult to control the fabrication of LIPSS using the short-pulsed laser because of its lower peak fluence than the ultrashort-pulsed laser and the unclarified principle. Optimizing the surface shape before laser irradiation may make it easier to control fabrication using short-pulsed laser since it has been reported that LIPSS is fabricated due to surface plasmons induced by plasma waves after altering the surface roughness during laser irradiation. The proposed method involves cutting the surface to assist with the short-pulsed laser for the control LIPSS: the surface of the workpiece is irradiated after straight microgrooves are fabricated by ultraprecision cutting. The experimental results showed that microgrooves made straight LIPSS with a high aspect ratio and also expanded the effective fluence range of experimental conditions when fabricating LIPSS. The new method was shown to control LIPSS effectively, and highlights the importance of the surface shape before laser irradiation for LIPSS fabrication.