Oxide layer reduction and formation of an aluminum nitride surface layer during femtosecond laser surface processing of aluminum in nitrogen-rich gases

2019 ◽  
Author(s):  
Alfred Tsubaki ◽  
Edwin Peng ◽  
Mark Anderson ◽  
William Thomas ◽  
Jeffrey E. Shield ◽  
...  
Keyword(s):  
Surface Layer ◽  
Femtosecond Laser ◽  
Aluminum Nitride ◽  
Oxide Layer ◽  
Laser Surface ◽  
Surface Processing

Multi-material, multi-layer femtosecond laser surface processing

2021 ◽  
Author(s):  
Alfred T. Tsubaki ◽  
Mark Anderson ◽  
Andrew Reicks ◽  
Jeffrey E. Shield ◽  
Dennis R. Alexander ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Surface ◽  
Surface Processing

3D Electron microscopy characterization of Ag mound-like surface structures made by femtosecond laser surface processing

2019 ◽  
Vol 480 ◽  
pp. 1047-1053
Author(s):  
Edwin Peng ◽  
Alexander Roth ◽  
Craig A. Zuhlke ◽  
Soodabeh Azadehranjbar ◽  
Dennis R. Alexander ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Femtosecond Laser ◽  
Laser Surface ◽  
Surface Structures ◽  
Surface Processing ◽  
3D Electron Microscopy ◽  
3D Electron ◽  
Microscopy Characterization

scholarly journals Near-unity broadband omnidirectional emissivity via femtosecond laser surface processing

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Andrew Reicks ◽  
Alfred Tsubaki ◽  
Mark Anderson ◽  
Jace Wieseler ◽  
Larousse Khosravi Khorashad ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Surface Properties ◽  
Large Scale ◽  
Low Cost ◽  
Processing Parameters ◽  
Laser Surface ◽  
Metallic Surfaces ◽  
Surface Processing ◽  
Perfect Absorption ◽  
Distinct Features

AbstractIt is very challenging to achieve near perfect absorption or emission that is both broadband and omnidirectional while utilizing a scalable fabrication process. Femtosecond laser surface processing is an emerging low-cost and large-scale manufacturing technique used to directly and permanently modify the surface properties of a material. The versatility of this technique to produce tailored surface properties has resulted in a rapidly growing number of applications. Here, we demonstrate near perfect, broadband, omnidirectional emissivity from aluminum surfaces by tuning the laser surface processing parameters including fluence, pulse count, and the ambient gas. Full-wave simulations and experimental results prove that the obtained increase in emissivity is mainly a result of two distinct features produced by femtosecond laser surface processing: the introduction of microscale surface features and the thick oxide layer. This technique leads to functionalized metallic surfaces that are ideal for emerging applications, such as passive radiative cooling and thermal management of spacecraft.

scholarly journals Micro/nanostructures formation by femtosecond laser surface processing on amorphous and polycrystalline Ni60Nb40

2017 ◽  
Vol 396 ◽  
pp. 1170-1176 ◽  
Author(s):  
Edwin Peng ◽  
Alfred Tsubaki ◽  
Craig A. Zuhlke ◽  
Meiyu Wang ◽  
Ryan Bell ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Surface ◽  
Surface Processing

Biomimetic apatite coating on yttria-stabilized tetragonal zirconia utilizing femtosecond laser surface processing

2016 ◽  
Vol 296 ◽  
pp. 88-95 ◽  
Author(s):  
Ayako Oyane ◽  
Masayuki Kakehata ◽  
Ikuko Sakamaki ◽  
Alexander Pyatenko ◽  
Hidehiko Yashiro ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Tetragonal Zirconia ◽  
Laser Surface ◽  
Surface Processing ◽  
Biomimetic Apatite ◽  
Apatite Coating
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