Thermal cycle testing of titanium superhydrophobic surfaces for a spacecraft jumping droplet thermal diode

Jacob A. Supowit, Christopher H. Baker, Bailey Zhao, John McHale, Ryan Miller, Patricia Pichardo, Craig A. Zuhlke, Nicholas Roth, Alfred Tsubaki, Mahdi Mohammadi-Ghaleni, Siamak Nejati, Dennis R. Alexander

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This work involved characterization and thermal cycle testing of superhydrophobic surfaces for application in a Jumping Droplet Thermal Diode. Three different superhydrophobic surfaces were fabricated and tested. Microstructures were created with a femtosecond laser on titanium substrates. Three techniques were used to further lower the surface energy of the surface: Submersion in fluorinated silane, vapor deposition of fluorinated silane, and grafting of PDFA. An experiment was built that utilized a thermoelectric cooler to cycle surface temperature, condense water vapor from ambient air, and observe droplet coalescence and self-propelled condensate removal. All three surfaces survived cycling through a temperature range of-30°C to 71°C.

Original languageEnglish (US)
Title of host publication2018 Joint Thermophysics and Heat Transfer Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105524
DOIs
StatePublished - 2018
Event12th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, 2018 - [state] GA, United States
Duration: Jun 25 2018Jun 29 2018

Publication series

Name2018 Joint Thermophysics and Heat Transfer Conference

Other

Other12th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, 2018
CountryUnited States
City[state] GA
Period6/25/186/29/18

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Nuclear and High Energy Physics

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  • Cite this

    Supowit, J. A., Baker, C. H., Zhao, B., McHale, J., Miller, R., Pichardo, P., Zuhlke, C. A., Roth, N., Tsubaki, A., Mohammadi-Ghaleni, M., Nejati, S., & Alexander, D. R. (2018). Thermal cycle testing of titanium superhydrophobic surfaces for a spacecraft jumping droplet thermal diode. In 2018 Joint Thermophysics and Heat Transfer Conference [AIAA 2018-2946] (2018 Joint Thermophysics and Heat Transfer Conference). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2018-2946