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J. P. Longtin
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Proceedings Papers

Micromachining of Vias Through Thermal-Sprayed Multilayer Structures Using Ultrafast Lasers

J. Sun, C. H. Fan, J. P. Longtin, S. Sampath
Proc. ASME. IMECE2001, Heat Transfer: Volume 6 — Heat Transfer in Materials Processing, 351-357, November 11–16, 2001
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2001/HTD-24368
https://doi.org/10.1115/IMECE2001/HTD-24368
View Paper titled, Micromachining of Vias Through Thermal-Sprayed Multilayer Structures Using Ultrafast Lasers
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Topics: Laser ablation, Lasers, Micromachining, Sprays
Proceedings Papers

Localized Electron Evolution Induced by Femtosecond Laser Pulses in Water

C. H. Fan, J. Sun, J. P. Longtin
Proc. ASME. IMECE2001, Heat Transfer: Volume 6 — Heat Transfer in Materials Processing, 181-188, November 11–16, 2001
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2001/HTD-24349
https://doi.org/10.1115/IMECE2001/HTD-24349
View Paper titled, Localized Electron Evolution Induced by Femtosecond Laser Pulses in Water
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Topics: Electrons, Lasers, Plasmas (Ionized gases), Water, Density, Absorption, Ultrashort laser pulses, Dielectric materials, Laser materials, Transparency
Proceedings Papers

Laser Processing of Silica Aerogels Using Ultrashort Pulses

J. Sun, J. P. Longtin, P. M. Norris
Proc. ASME. IMECE2000, Heat Transfer: Volume 3, 195-200, November 5–10, 2000
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2000-1477
https://doi.org/10.1115/IMECE2000-1477
View Paper titled, Laser Processing of Silica Aerogels Using Ultrashort Pulses
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Topics: Lasers, Machining, Brittleness, Micromachining, Nanomaterials, Sapphire, Temperature, Weight (Mass)
Proceedings Papers

Optical Technique to Measure Transient Interface Temperature During Droplet Impingement on a Cooled Surface

Y. Li, J. P. Longtin
Proc. ASME. IMECE2000, Heat Transfer: Volume 1, 273, November 5–10, 2000
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2000-1393
https://doi.org/10.1115/IMECE2000-1393
View Paper titled, Optical Technique to Measure Transient Interface Temperature During Droplet Impingement on a Cooled Surface
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Topics: Drops, Temperature, Transients (Dynamics), Electronics, Laser beams, Lasers, Resolution (Optics), Condensation, Fibers, Glass
Proceedings Papers

Modeling of Moving Breakdown by Femtosecond Laser Pulses in Dielectrics

C. H. Fan, J. P. Longtin
Proc. ASME. IMECE2000, Heat Transfer: Volume 3, 187-194, November 5–10, 2000
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2000-1476
https://doi.org/10.1115/IMECE2000-1476
View Paper titled, Modeling of Moving Breakdown by Femtosecond Laser Pulses in Dielectrics
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Topics: Dielectric materials, Lasers, Modeling, Density, Electrons, Laser ablation, Solids, Ablation (Vaporization technology), Bioengineering, Temperature
Proceedings Papers

Ultrafast Laser Micromachining and Patterning of Thermal Spray Multilayers for Novel Sensor Fabrication

Q. Chen, J. P. Longtin, S. Sampath, R. J. Gambino
Proc. ASME. HT2003, Heat Transfer: Volume 3, 63-70, July 21–23, 2003
Publisher: American Society of Mechanical Engineers
Paper No: HT2003-47069
https://doi.org/10.1115/HT2003-47069
View Paper titled, Ultrafast Laser Micromachining and Patterning of Thermal Spray Multilayers for Novel Sensor Fabrication
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Topics: Lasers, Manufacturing, Micromachining, Sensors, Sprays, Strain gages
Proceedings Papers

ISO-Gradient Lines in a Differentially Heated Cylindrical Fluid Layer Using Coherent Gradient Sensing Interferometer

D. Mishra, S. L. Wong, J. P. Longtin, R. P. Singh, V. Prasad
Proc. ASME. IMECE2002, Heat Transfer, Volume 2, 121-130, November 17–22, 2002
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2002-33734
https://doi.org/10.1115/IMECE2002-33734
View Paper titled, ISO-Gradient Lines in a Differentially Heated Cylindrical Fluid Layer Using Coherent Gradient Sensing Interferometer
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Topics: Cavities, Fluids, Interferometers, Interferometry, Temperature, Lasers, Flow visualization, Fluid measurement, Natural convection, Radiation (Physics)
Proceedings Papers

Image-Based Modeling for Assessing Thermal Conductivity of Thermal Spray Coatings at Ambient and High Temperature

Y. Tan, A. Sharma, J. P. Longtin, S. Sampath, H. Wang
Proc. ASME. IMECE2006, Heat Transfer, Volume 2, 697-705, November 5–10, 2006
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2006-15972
https://doi.org/10.1115/IMECE2006-15972
View Paper titled, Image-Based Modeling for Assessing Thermal Conductivity of Thermal Spray Coatings at Ambient and High Temperature
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Topics: Coatings, High temperature, Modeling, Sprays, Thermal conductivity, Coating processes, Cross section (Physics), Electrical properties, Finite element analysis, Imaging
Journal Articles

Novel Sensor Fabrication Using Direct-Write Thermal Spray and Precision Laser Micromachining

Q. Chen, T. Tong, J. P. Longtin, S. Tankiewicz, S. Sampath, R. J. Gambino
Journal: Journal of Manufacturing Science and Engineering
Publisher: ASME
Article Type: Technical Papers
J. Manuf. Sci. Eng. November 2004, 126(4): 830–836.
https://doi.org/10.1115/1.1813481
Published Online: February 4, 2005
View Article titled, Novel Sensor Fabrication Using Direct-Write Thermal Spray and Precision Laser Micromachining
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Topics: Lasers, Manufacturing, Micromachining, Sensors, Sprays, Strain gages, Temperature, Coatings, Rapid prototyping, Heating
Journal Articles

Visualization of Iso-Gradient Lines in Convective and Diffusive Systems Using Gradient-Sensing Interferometry

S. L. Wong, D. Mishra, J. P. Longtin, R. Singh, V. Prasad
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Heat Transfer Photogallery
J. Heat Mass Transfer. August 2002, 124(4): 600.
https://doi.org/10.1115/1.1502637
Published Online: August 1, 2002
View Article titled, Visualization of Iso-Gradient Lines in Convective and Diffusive Systems Using Gradient-Sensing Interferometry
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Topics: Diffusion (Physics), Flow visualization, Interferometers, Interferometry, Natural convection, Refractive index, Visualization
Journal Articles

Plasma Absorption of Femtosecond Laser Pulses in Dielectrics

C. H. Fan, Postdoctoral Research Associate, Assoc. Mem. ASME, J. Sun, Graduate Student Researcher, Student Mem. ASME, J. P. Longtin, Associate Professor, Member ASME
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. April 2002, 124(2): 275–283.
https://doi.org/10.1115/1.1445135
Published Online: October 22, 2001
View Article titled, Plasma Absorption of Femtosecond Laser Pulses in Dielectrics
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Topics: Absorption, Lasers, Plasmas (Ionized gases)
Journal Articles

Laser-Based Measurement of Temperature or Concentration Change at Liquid Surfaces

C. H. Fan, Graduate Student Researcher, Assoc. Mem. ASME, J. P. Longtin, Assistant Professor, Mem. ASME,
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. November 2000, 122(4): 757–762.
https://doi.org/10.1115/1.1288775
Published Online: April 19, 2000
View Article titled, Laser-Based Measurement of Temperature or Concentration Change at Liquid Surfaces
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Topics: Lasers, Temperature, Temperature measurement, Water, Methanol, Ethanol
Journal Articles

Saturable Absorption During High-Intensity Laser Heating of Liquids

J. P. Longtin, C.-L. Tien
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. November 1996, 118(4): 924–930.
https://doi.org/10.1115/1.2822590
Published Online: November 1, 1996
View Article titled, Saturable Absorption During High-Intensity Laser Heating of Liquids
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Topics: Absorption, Heating, Lasers, Radiation (Physics)
Journal Articles

Pulsed Laser Heating of Highly Absorbing Particles

J. P. Longtin, T. Q. Qiu, C. L. Tien
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Briefs
J. Heat Mass Transfer. August 1995, 117(3): 785–788.
https://doi.org/10.1115/1.2822651
Published Online: August 1, 1995
View Article titled, Pulsed Laser Heating of Highly Absorbing Particles
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Topics: Heat conduction, Heating, Lasers, Modeling, Particulate matter, Radiation (Physics)
Journal Articles

Characteristics of Radiation Absorption in Metallic Particles

T. Q. Qiu, J. P. Longtin, C. L. Tien
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. May 1995, 117(2): 340–345.
https://doi.org/10.1115/1.2822527
Published Online: May 1, 1995
View Article titled, Characteristics of Radiation Absorption in Metallic Particles
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Topics: Absorption, Particulate matter, Radiation (Physics)
Journal Articles

A One-Dimensional Model of a Micro Heat Pipe During Steady-State Operation

J. P. Longtin, B. Badran, F. M. Gerner
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. August 1994, 116(3): 709–715.
https://doi.org/10.1115/1.2910926
Published Online: August 1, 1994
View Article titled, A One-Dimensional Model of a Micro Heat Pipe During Steady-State Operation
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Topics: Heat pipes, Steady state