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Proceedings Papers

Liquid Transport Properties in Sub-Micron Channel Flows

K. Johan A. Westin, Kenneth S. Breuer, Chang-Hwan Choi, Peter Huang, Zhiqiang Cao, Bruce Caswell, Peter D. Richardson, Merwin Sibulkin
Proc. ASME. IMECE2001, Micro-Electro-Mechanical Systems (MEMS), 611-618, November 11–16, 2001
Paper No: IMECE2001/MEMS-23887
DOI: https://doi.org/10.1115/IMECE2001/MEMS-23887
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Topics: Channel flow, Microelectromechanical systems, Flow (Dynamics), Fluids, Microchannels, Silicon, Boundary-value problems, Ethanol, Lasers, Pressure
Proceedings Papers

Superhydrophobic Surfaces Properties for Anti-Icing

Mohammad Amin Sarshar, Christopher Swarctz, Scott Hunter, John Simpson, Chang-Hwan Choi
Proc. ASME. IMECE2011, Volume 10: Heat and Mass Transport Processes, Parts A and B, 499-502, November 11–17, 2011
Paper No: IMECE2011-63282
DOI: https://doi.org/10.1115/IMECE2011-63282
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Topics: Air flow, Aluminum, Coatings, Delays, Design, Drops, Flow (Dynamics), Ice, Low temperature, Particulate matter
Proceedings Papers

Measurement of Hydrodynamic Frictional Drag on Superhydrophobic Flat Plates in High Reynolds Number Flows

Elias Aljallis, Mohammad Amin Sarshar, Raju Datla, Scott Hunter, John Simpson, Vinod Sikka, Andrew Jones, Chang-Hwan Choi
Proc. ASME. IMECE2011, Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B, 77-82, November 11–17, 2011
Paper No: IMECE2011-63272
DOI: https://doi.org/10.1115/IMECE2011-63272
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Topics: Drag (Fluid dynamics), Flat plates, Flow (Dynamics), Reynolds number, Bubbles, Coating processes, Coatings, Turbulence, Water, Drag reduction
Proceedings Papers

Characterization of Superhydrophobic Surfaces for Anti-Icing in a Low-Temperature Wind Tunnel

Christopher Swarctz, Elias Aljallis, Scott Hunter, John Simpson, Chang-Hwan Choi
Proc. ASME. IMECE2010, Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B, 303-306, November 12–18, 2010
Paper No: IMECE2010-40533
DOI: https://doi.org/10.1115/IMECE2010-40533
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Topics: Low temperature, Wind tunnels
Proceedings Papers

Optimized Design of Regenerative Blowers for Enhanced Efficiency

Chien-Hsiang Wang, Chang-Hwan Choi
Proc. ASME. IMECE2010, Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B, 1241-1248, November 12–18, 2010
Paper No: IMECE2010-40600
DOI: https://doi.org/10.1115/IMECE2010-40600
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Topics: Blades, Design, Computational fluid dynamics, Impellers, Flow simulation, Geometry, Modeling, Air flow, Compressors, Computer software
Journal Articles

Effects of Surface Topography and Colloid Particles on the Evaporation Kinetics of Sessile Droplets on Superhydrophobic Surfaces

Wei Xu, Chang-Hwan Choi
Journal: Journal of Heat Transfer
Article Type: Research Papers
J. Heat Transfer. May 2012, 134(5): 051022.
DOI: https://doi.org/10.1115/1.4005715
Published Online: April 13, 2012
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Topics: Drops, Evaporation, Particulate matter, Water, Columns (Structural)
Proceedings Papers

Effects of Structural Topography on Nanofluids Droplet Evaporation on Multifarious Superhydrophobic Surfaces

Wei Xu, Chang-Hwan Choi
Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 1, 497-505, December 18–21, 2009
Paper No: MNHMT2009-18263
DOI: https://doi.org/10.1115/MNHMT2009-18263
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Topics: Drops, Evaporation, Nanofluids
Proceedings Papers

Effects of Nanofluids on Droplet Evaporation and Wetting on Nanoporous Superhydrophobic Surfaces

Rajesh Leeladhar, Wei Xu, Chang-Hwan Choi
Proc. ASME. MNHMT2009, ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 2, 725-733, December 18–21, 2009
Paper No: MNHMT2009-18551
DOI: https://doi.org/10.1115/MNHMT2009-18551
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Topics: Drops, Evaporation, Nanofluids, Wetting
Proceedings Papers

Nanofluids Evaporation Kinetics on Microstructured Superhydrophobic Surfaces

Wei Xu, Chang-Hwan Choi
Proc. ASME. IMECE2009, Volume 12: Micro and Nano Systems, Parts A and B, 1015-1024, November 13–19, 2009
Paper No: IMECE2009-13067
DOI: https://doi.org/10.1115/IMECE2009-13067
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Topics: Evaporation, Nanofluids
Proceedings Papers

Tunable Lloyd-Mirror Interferometer for Large-Area Nanopatterning

Ishan Wathuthanthri, Chang-Hwan Choi
Proc. ASME. IMECE2009, Volume 12: Micro and Nano Systems, Parts A and B, 433-438, November 13–19, 2009
Paper No: IMECE2009-10895
DOI: https://doi.org/10.1115/IMECE2009-10895
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Topics: Interferometers, Lithography, Mirrors
Proceedings Papers

Evaporation of Nanoparticles Droplets on Nanoporous Superhydrophobic Surfaces

Rajesh Leeladhar, Wei Xu, Chang-Hwan Choi
Proc. ASME. IMECE2009, Volume 12: Micro and Nano Systems, Parts A and B, 619-625, November 13–19, 2009
Paper No: IMECE2009-10773
DOI: https://doi.org/10.1115/IMECE2009-10773
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Topics: Drops, Evaporation, Nanofluids, Nanoparticles
Proceedings Papers

Effect of Geometric Parameters of Superhydrophobic Surface on Liquid Slip

Choongyeop Lee, Chang-Hwan Choi, Chang-Jin Kim
Proc. ASME. IMECE2008, Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C, 77-86, October 31–November 6, 2008
Paper No: IMECE2008-68190
DOI: https://doi.org/10.1115/IMECE2008-68190
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Topics: Drag reduction, Fireplaces, Flow (Dynamics), Microfabrication, Rheometers, Semiconductor wafers, Wetting
Proceedings Papers

Interfacial-Tension-Directed Self-Assembly of Nanowires on Superhydrophobic Surfaces

Yao-Tsan Tsai, Wei Xu, Eui-Hyeok Yang, Chang-Hwan Choi
Proc. ASME. IMECE2008, Volume 13: Nano-Manufacturing Technology; and Micro and Nano Systems, Parts A and B, 749-753, October 31–November 6, 2008
Paper No: IMECE2008-67245
DOI: https://doi.org/10.1115/IMECE2008-67245
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Topics: Nanowires, Self-assembly, Tension, Manufacturing, Evaporation, Surface tension, Electrodeposition, Etching, Hydrophobicity, Membranes
Proceedings Papers

Nanoturf Surfaces for Reduction of Liquid Flow Drag in Microchannels

Chang-Hwan Choi, Joonwon Kim, Chang-Jin Kim
Proc. ASME. NANO2004, Design, Synthesis, and Applications, 47-48, September 22–24, 2004
Paper No: NANO2004-46078
DOI: https://doi.org/10.1115/NANO2004-46078
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Topics: Drag (Fluid dynamics), Flow (Dynamics), Microchannels, Design, Drag reduction, Drops, Nanofabrication, Nanostructures , Plates (structures), Silicon
Proceedings Papers

Measurement of Liquid Slip on Nanoturf Surfaces

Chang-Hwan Choi, Chang-Jin Kim
Proc. ASME. NANO2005, Design, Synthesis, and Applications, 59-60, September 12–14, 2005
Paper No: NANO2005-87079
DOI: https://doi.org/10.1115/NANO2005-87079
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Topics: Design, Drag (Fluid dynamics), Drag reduction, Drops, Engineers, Flow (Dynamics), Friction, High pressure (Physics), Pressure, Surface roughness
Proceedings Papers

To Slip or Not to Slip: Water Flows in Hydrophilic and Hydrophobic Microchannels

Chang-Hwan Choi, K. Johan A. Westin, Kenneth S. Breuer
Proc. ASME. IMECE2002, Electronic and Photonic Packaging, Electrical Systems Design and Photonics, and Nanotechnology, 557-564, November 17–22, 2002
Paper No: IMECE2002-33707
DOI: https://doi.org/10.1115/IMECE2002-33707
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Topics: Flow (Dynamics), Microchannels, Water, Shear rate, Borosilicate glasses, Coating processes, Coatings, Manufacturing, Pressure, Self-assembly