This paper reports novel microcantilever metrology tools to investigate free microjets emanating from a micromachined nozzle having 10 μm diameter. Microcantilever sensors are well-suited to interrogate these flows due to their high spatial and temporal resolution. In this work, microcantilevers with integrated piezoresistors have been used to detect the breakup distance of free microjets, and microcantilevers with integrated resistive heaters have been applied to study microjet cooling and phase change characteristics. Measured microjet thrusts were in the range of 10 – 60 μN and heat fluxes were measured in the range of 25 – 350 °C. The convective heat fluxes by microjet impingement boiling were estimated at 2.9 – 7.6 kW/cm2. The techniques reported herein are promising to characterize microscale flows.
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ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference
July 8–12, 2007
Vancouver, British Columbia, Canada
Conference Sponsors:
- Electronic and Photonic Packaging Division
ISBN:
0-7918-4277-0
PROCEEDINGS PAPER
Measurements of Microjet Cooling and Phase Change Characteristics Using Microcantilever Heaters
Jungchul Lee,
Jungchul Lee
Georgia Institute of Technology, Atlanta, GA
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Hanif Hunter,
Hanif Hunter
Georgia Institute of Technology, Atlanta, GA
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Fabian Goericke,
Fabian Goericke
Georgia Institute of Technology, Atlanta, GA
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Nisarga Naik,
Nisarga Naik
Georgia Institute of Technology, Atlanta, GA
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Mark Allen,
Mark Allen
Georgia Institute of Technology, Atlanta, GA
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Ari Glezer,
Ari Glezer
Georgia Institute of Technology, Atlanta, GA
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William P. King
William P. King
University of Illinois - Urbana-Champaign, Urbana, IL
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Jungchul Lee
Georgia Institute of Technology, Atlanta, GA
Hanif Hunter
Georgia Institute of Technology, Atlanta, GA
Fabian Goericke
Georgia Institute of Technology, Atlanta, GA
Nisarga Naik
Georgia Institute of Technology, Atlanta, GA
Mark Allen
Georgia Institute of Technology, Atlanta, GA
Ari Glezer
Georgia Institute of Technology, Atlanta, GA
William P. King
University of Illinois - Urbana-Champaign, Urbana, IL
Paper No:
IPACK2007-33291, pp. 163-169; 7 pages
Published Online:
January 8, 2010
Citation
Lee, J, Hunter, H, Goericke, F, Naik, N, Allen, M, Glezer, A, & King, WP. "Measurements of Microjet Cooling and Phase Change Characteristics Using Microcantilever Heaters." Proceedings of the ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference. ASME 2007 InterPACK Conference, Volume 1. Vancouver, British Columbia, Canada. July 8–12, 2007. pp. 163-169. ASME. https://doi.org/10.1115/IPACK2007-33291
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