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David A. Willis
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Proceedings Papers

Transport Phenomena and Droplet Formation During Pulsed Laser Micro-Machining of Thin Films

David A. Willis, Xianfan Xu
Proc. ASME. IMECE98, Heat Transfer: Volume 4 — Heat Transfer in Materials Processing, 173-181, November 15–20, 1998
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1998-0703
https://doi.org/10.1115/IMECE1998-0703
View Paper titled, Transport Phenomena and Droplet Formation During Pulsed Laser Micro-Machining of Thin Films
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Topics: Drops, Lasers, Micromachining, Thin films, Transport phenomena, Flow (Dynamics), Fluid dynamics, Machining, Resolution (Optics), Surface deformation
Proceedings Papers

Design and Performance of a Directional Permeability Membrane

Hamidreza Bayat, David A. Willis, Paul S. Krueger
Proc. ASME. IMECE2019, Volume 3: Biomedical and Biotechnology Engineering, V003T04A019, November 11–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2019-11565
https://doi.org/10.1115/IMECE2019-11565
View Paper titled, Design and Performance of a Directional Permeability Membrane
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Topics: Design, Membranes, Permeability, Flow (Dynamics), Water, Diluents, Hydrostatic pressure, Pressure, Control equipment, Deflection
Journal Articles

Nanosecond Time-Resolved Measurements of Transient Hole Opening During Laser Micromachining of an Aluminum Film

Mohammad Hendijanifard, David A. Willis
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. September 2013, 135(9): 091202.
Paper No: HT-12-1364
https://doi.org/10.1115/1.4024389
Published Online: July 26, 2013
View Article titled, Nanosecond Time-Resolved Measurements of Transient Hole Opening During Laser Micromachining of an Aluminum Film
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Topics: Aluminum, Fluence (Radiation measurement), Lasers, Micromachining, Transients (Dynamics), Ablation (Vaporization technology), Pressure, Explosions
Proceedings Papers

Nanosecond Time-Resolved Measurements of Hole Opening During Laser Micromachining of Aluminum Films

David A. Willis, Mohammad Hendijanifard
Proc. ASME. MNHMT2012, ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer, 651-657, March 3–6, 2012
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2012-75331
https://doi.org/10.1115/MNHMT2012-75331
View Paper titled, Nanosecond Time-Resolved Measurements of Hole Opening During Laser Micromachining of Aluminum Films
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Topics: Aluminum, Lasers, Micromachining, Pressure, Ablation (Vaporization technology), Imaging, Shock waves, Transients (Dynamics), Wavelength, Delays
Proceedings Papers

Modeling of Pressure Evolution During Nanosecond Laser Ablation of Metal Films

Mohammad Hendijanifard, David A. Willis
Proc. ASME. HT2009, Volume 3: Combustion, Fire and Reacting Flow; Heat Transfer in Multiphase Systems; Heat Transfer in Transport Phenomena in Manufacturing and Materials Processing; Heat and Mass Transfer in Biotechnology; Low Temperature Heat Transfer; Environmental Heat Transfer; Heat Transfer Education; Visualization of Heat Transfer, 601-606, July 19–23, 2009
Publisher: American Society of Mechanical Engineers
Paper No: HT2009-88130
https://doi.org/10.1115/HT2009-88130
View Paper titled, Modeling of Pressure Evolution During Nanosecond Laser Ablation of Metal Films
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Topics: Laser ablation, Metals, Modeling, Pressure, Shock waves, Shock (Mechanics), Lasers, Transients (Dynamics), Ablation (Vaporization technology), Thermofluids
Proceedings Papers

Laser-Induced Melting and Phase Explosion in Liquid Metal Films

Jill Klentzman, Vladimir S. Ajaev, David A. Willis
Proc. ASME. ICNMM2008, ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels, 737-740, June 23–25, 2008
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2008-62233
https://doi.org/10.1115/ICNMM2008-62233
View Paper titled, Laser-Induced Melting and Phase Explosion in Liquid Metal Films
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Topics: Explosions, Lasers, Liquid metals, Melting, Metallic films, Evaporation, Flow (Dynamics), Metals, Chemical etching, Glass
Proceedings Papers

Laser Surface Texturing: Applications and Research Opportunities

David A. Willis
Proc. ASME. HT2005, Heat Transfer: Volume 3, 311-313, July 17–22, 2005
Publisher: American Society of Mechanical Engineers
Paper No: HT2005-72676
https://doi.org/10.1115/HT2005-72676
View Paper titled, Laser Surface Texturing: Applications and Research Opportunities
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Topics: Lasers, Drops, Melting, Semiconductor wafers, Density, Displacement, Fluence (Radiation measurement), Metallic films, Metals, Microelectromechanical systems
Proceedings Papers

The Metal-Dielectric Transition in Short-Pulse Laser Ablation of Metals

Cristian Porneala, David A. Willis
Proc. ASME. HT-FED2004, Volume 4, 537-543, July 11–15, 2004
Publisher: American Society of Mechanical Engineers
Paper No: HT-FED2004-56645
https://doi.org/10.1115/HT-FED2004-56645
View Paper titled, The Metal-Dielectric Transition in Short-Pulse Laser Ablation of Metals
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Topics: Laser ablation, Metals, Temperature, Absorption, Explosions, Nucleation (Physics), Superheating, Vapors, Aluminum, Computer simulation
Proceedings Papers

Modeling of Laser-Induced Material Removal During Fabrication of Micro- and Nanochannels

Vladimir S. Ajaev, David A. Willis
Proc. ASME. ICNMM2006, ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels, Parts A and B, 679-683, June 19–21, 2006
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2006-96203
https://doi.org/10.1115/ICNMM2006-96203
View Paper titled, Modeling of Laser-Induced Material Removal During Fabrication of Micro- and Nanochannels
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Topics: Lasers, Manufacturing, Modeling, Evaporation, Metals, Chemical etching, Flow (Dynamics), Glass, Heat losses, Laser beams
Journal Articles

Non-Equilibrium Phase Change in Metal Induced by Nanosecond Pulsed Laser Irradiation

Xianfan Xu, David A. Willis
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. April 2002, 124(2): 293–298.
https://doi.org/10.1115/1.1445792
Published Online: November 16, 2001
View Article titled, Non-Equilibrium Phase Change in Metal Induced by Nanosecond Pulsed Laser Irradiation
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Topics: Equilibrium (Physics), Explosions, Lasers, Metals, Vapors, Temperature, Heating, Evaporation, Nucleation (Physics), Laser ablation