Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
권호 표지
DOI QR코드

DOI QR Code

Controlled Surface Functionalities of metals using Femtosecond Laser-induced Nano- and Micro-scale Surface Structures

펨토초 레이저 유도 나노 및 마이크로 구조물을 활용한 금속 표면 기능성 제어

  • Taehoon Park (Industrial Materials Processing R&D Department, Korea Institute of Industrial Technology) ;
  • Hyo Soo Lee (Industrial Materials Processing R&D Department, Korea Institute of Industrial Technology) ;
  • Hai Joong Lee (Industrial Materials Processing R&D Department, Korea Institute of Industrial Technology) ;
  • Taek Yong Hwang (Molding and Metal Forming R&D Department, Korea Institute of Industrial Technology)
  • 박태훈 (한국생산기술연구원 산업소재공정연구부문) ;
  • 이효수 (한국생산기술연구원 산업소재공정연구부문) ;
  • 이해중 (한국생산기술연구원 산업소재공정연구부문) ;
  • 황택용 (한국생산기술연구원 금형성형연구부문)
  • Received : 2023.06.19
  • Accepted : 2023.06.30
  • Published : 2023.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

With femtosecond (fs) laser pulse irradiation on metals, various types of nano- and micro-scale structures can be naturally induced at the surface through laser-matter interaction. Two notable structures are laser-induced periodic surface structures (LIPSSs) and cone/spike structures, which are known to significantly modify the optical and physical properties of metal surfaces. In this work, we irradiate fs laser pulses onto various types of metals, cold-rolled steel, pickled & oiled steel, Fe-18Cr-8Ni alloy, Zn-Mg-Al alloy coated steel, and pure Cu which can be useful for precise molding and imprinting processes, and adjust the morphological profiles of LIPSSs and cone/spike structures for clear structural coloration and a larger range of surface wettability control, respectively, by changing the fluence of laser and the speed of raster scan. The periods of LIPSSs on metals used in our experiments are nearly independent of laser fluence. Accordingly, the structural coloration of the surface with LIPSSs can be optimized with the morphological profile of LIPSSs, controlled only by the speed of the raster scan once the laser fluence is determined for each metal sample. However, different from LIPSSs, we demonstrate that the morphological profiles of the cone/spike structures, including their size, shape, and density, can be manipulated with both the laser fluence and the raster scan speed to increase a change in the contact angle. By injection molding and imprinting processes, it is expected that fs laser-induced surface structures on metals can be replicated to the plastic surfaces and potentially beneficial to control the optical and wetting properties of the surface of injection molded and imprinted products.

Keywords

Acknowledgement

본 연구는 2023년도 중소벤처기업부의 기술개발사업 지원에 의한 연구임 [과제번호 S3193463]

References

  1. A. Y. Vorobyev, Chunlei Guo, "Direct femtosecond laser surface nano/microstructuring and its applications.", Laser photonics Rev. 7, 385-407 (2013). https://doi.org/10.1002/lpor.201200017
  2. K.M. Tanvir Ahmmed, Colin Grambow and Anne-Marie Kietzig, "Fabrication of Micro/Nano structures on Metals by Femtosecond Laser Micromachining.", Micromachines 5, 1219-1253 (2014). https://doi.org/10.3390/mi5041219
  3. J. Bonse, Sabrina V. Kirner, S. Hohm, Nadja Epperlein, D. Spaltmann, A. Rosenfeld, J. Kruger, "Applications of laser-induced periodic surface structures (LIPSS).", Laser-based Micro- and Nanoprocessing XI, (2017).
  4. J. Bonse, R. Koter, M. Hartelt, D. Spaltmann, S. Pentzien, S. Hohm, A. Rosenfeld, J. Kruger, "Tribological performance of femtosecond laser-induced periodic surface structures on titanium and a high toughness bearing steel.", Appl. Surf. Sci. 336, (2015).
  5. Jiale Yong, Qing Yang, Xun Hou and Feng Chen, "Nature-Inspired Superwettability Achieved by Femtosecond Lasers.", Ultrafast Science 9895418, (2022).
  6. Chi-Vinh Ngo, Doo-Man Chun, "Control of laser-ablated aluminum surface wettability to superhydrophobic or superhydrophilic through simple heat treatment or water boiling post-processing.", Appl. Surf. Sci 435, (2018).
  7. A. Y. Vorobyev, V. S. Makin, Chunlei Guo, "Periodic ordering of random surface nanostructures induced by femtosecond laser.", J. Appl. Phys. 101, 034903 (2007).
  8. Taek Yong Hwang, Heedeuk Shin, Hai Joong Lee, Hyo Soo Lee, Chunlei Guo, Byounghwak Lee, "Rotationally symmetric colorization of metal surfaces through omnidirectional femtosecond laser-induced periodic surface structures.", Opt. Lett. 13, (2020).
  9. A. Y. Vorobyev, Chunlei Guo, "Multifunctional surfaces produced by femtosecond laser pulses.", J. Appl. Phys. 117, 033103 (2015).
  10. Moonwoo La, Taek Yong Hwang, Jeong-Yong Choi, Seokkwan Hong, Sung Jae Park, Jeongjin Kang, Dongwhi Choi, "Development of a metal-to-metal imprinting process: Transcript quality and surface wettability characterization.", Appl. Surf. Sci. 527, (2020).
  11. Gan Yuan, Yu Liu, Fei Xie, Chunlei Guo, Chi-Vinh Ngo, and Wei Li, "Fabrication of Superhydrophobic Gully-Structured Surfaces by Femtoseocnd Laser and Imprinting for High-Efficiency Self-Cleaning Rain Collection.", Langmuir 38, 2720-2728 (2022). https://doi.org/10.1021/acs.langmuir.1c03488
  12. D.W. Lim, K.B. Park, J.R. Park, K.H. Ko, J.W. Lee, J.H. Kim, "Manufacturing process of micro-nano structure for super hydrophobic surface.", J. Korea Society of Die & Mold Engineering, Vol.15, (2021).
  13. Y.S. Do, J.S. Kim, Y.B. Go, J.D. Kim, K.H. Y, C.J. Hwang, "Surface characteristics on the optical pattern die of light guiding plate by machining types.", J. Korea Society of Die & Mold Engineering, Vol.2, No.4, (2008).
  14. C.J. Hwang, J.S. Kim, S.K. Hong, J.G. Oh, J.J. Kang, "Study on the stamper mold manufacture and molding of barrier ribs for polymer solar cells using direct writing method.", J. Korea Society of Die & Mold Engineering, Vol.2, No.6, (2008).