TY - GEN
T1 - Multi-material, multi-layer femtosecond laser surface processing
AU - Tsubaki, Alfred
AU - Anderson, Mark
AU - Reicks, Andrew
AU - Shield, Jeffrey E.
AU - Alexander, Dennis R.
AU - Zuhlke, Craig A.
N1 - Publisher Copyright:
© 2021 SPIE. All rights reserved.
PY - 2021
Y1 - 2021
N2 - Femtosecond laser surface processing (FLSP) is a material processing technique used to produce self-organized micro/nanostructures on metals. The hierarchal structures can improve the surface properties of materials when applied to specific applications such as enhancing heat transfer. In this paper, we demonstrate a recently developed technique termed multi-material, multi-layer FLSP (3ML-FLSP). With 3ML-FLSP, micro/nanoscale features can be produced that are composed of multiple materials by processing surfaces using traditional FLSP techniques that are layered with thin foils of different materials. We demonstrate results with three layers of different metals (304 stainless steel, copper, and aluminum) clamped together during laser processing to create structures composed of all three metals. Ion beam milling is used to cross-section structures for subsurface analysis of the microstructure. The three metals did not mix within the bulk of the microstructures indicating that the microstructures were produced primarily through preferential removal of material around the structures. However, there was mixing of all three materials within the nanoparticle layer that covers the microstructures.
AB - Femtosecond laser surface processing (FLSP) is a material processing technique used to produce self-organized micro/nanostructures on metals. The hierarchal structures can improve the surface properties of materials when applied to specific applications such as enhancing heat transfer. In this paper, we demonstrate a recently developed technique termed multi-material, multi-layer FLSP (3ML-FLSP). With 3ML-FLSP, micro/nanoscale features can be produced that are composed of multiple materials by processing surfaces using traditional FLSP techniques that are layered with thin foils of different materials. We demonstrate results with three layers of different metals (304 stainless steel, copper, and aluminum) clamped together during laser processing to create structures composed of all three metals. Ion beam milling is used to cross-section structures for subsurface analysis of the microstructure. The three metals did not mix within the bulk of the microstructures indicating that the microstructures were produced primarily through preferential removal of material around the structures. However, there was mixing of all three materials within the nanoparticle layer that covers the microstructures.
KW - Femtosecond laser surface processing
KW - Laser-matter interactions
KW - Micro/nanostructured surfaces
KW - Surface functionalization
UR - http://www.scopus.com/inward/record.url?scp=85107184770&partnerID=8YFLogxK
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U2 - 10.1117/12.2582756
DO - 10.1117/12.2582756
M3 - Conference contribution
AN - SCOPUS:85107184770
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Laser-Based Micro- and Nanoprocessing XV
A2 - Klotzbach, Udo
A2 - Watanabe, Akira
A2 - Kling, Rainer
PB - SPIE
T2 - Laser-Based Micro- and Nanoprocessing XV 2021
Y2 - 6 March 2021 through 11 March 2021
ER -