Tailoring liquid/solid interfacial energy transfer: fabrication and application of multiscale metallic surfaces with engineered heat transfer and electrolysis properties via femtosecond laser surface processing techniques

2014 ◽  
Author(s):  
Troy P. Anderson ◽  
Chris Wilson ◽  
Craig A. Zuhlke ◽  
Corey Kruse ◽  
Anton Hassebrook ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Energy Transfer ◽  
Femtosecond Laser ◽  
Interfacial Energy ◽  
Laser Surface ◽  
Metallic Surfaces ◽  
Surface Processing ◽  
Processing Techniques

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.

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 Effects of Femtosecond Laser Surface Processed Nanoparticle Layers on Pool Boiling Heat Transfer Performance

2018 ◽  
Vol 10 (3) ◽  
Author(s):  
Corey Kruse ◽  
Mike Lucis ◽  
Jeff E. Shield ◽  
Troy Anderson ◽  
Craig Zuhlke ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Femtosecond Laser ◽  
Layer Thickness ◽  
Boiling Heat Transfer ◽  
Heat Transfer Performance ◽  
Pool Boiling ◽  
Laser Surface ◽  
Transfer Performance ◽  
Pool Boiling Heat Transfer ◽  
Nanoparticle Layer

An experimental investigation of the effects of layers of nanoparticles formed during femtosecond laser surface processing (FLSP) on pool boiling heat transfer performance has been conducted. Five different stainless steel 304 samples with slightly different surface features were fabricated through FLSP, and pool boiling heat transfer experiments were carried out to study the heat transfer characteristics of each surface. The experiments showed that the layer(s) of nanoparticles developed during the FLSP processes, which overlay FLSP self-organized microstructures, can either improve or degrade boiling heat transfer coefficients (HTC) depending on the overall thickness of the layer(s). This nanoparticle layer thickness is an indirect result of the type of microstructure created. The HTCs were found to decrease with increasing nanoparticle layer thickness. This trend has been attributed to added thermal resistance. Using a focused ion beam milling process and transmission electron microscopy (TEM), the physical and chemical properties of the nanoparticle layers were characterized and used to explain the observed heat transfer results. Results suggest that there is an optimal nanoparticle layer thickness and material composition such that both the HTCs and critical heat flux (CHF) are enhanced.

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
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