Superhydrophobic metallic surfaces functionalized via femtosecond laser surface processing for long term air film retention when submerged in liquid

Craig A. Zuhlke, Troy P. Anderson, Pengbo Li, Michael J. Lucis, Nick Roth, Jeffrey E. Shield, Benjamin Terry, Dennis R. Alexander

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

13 Scopus citations


Femtosecond laser surface processing (FLSP) is a powerful technique used to create self-organized microstructures with nanoscale features on metallic surfaces. By combining FLSP surface texturing with surface chemistry changes, either induced by the femtosecond laser during processing or introduced through post processing techniques, the wetting properties of metals can be altered. In this work, FLSP is demonstrated as a technique to create superhydrophobic surfaces on grade 2 titanium and 304 stainless steel that can retain an air film (plastron) between the surface and a surrounding liquid when completely submerged. It is shown that the plastron lifetime when submerged in distilled water or synthetic stomach acid is critically dependent on the specific degree of surface micro- and nano-roughness, which can be tuned by controlling various FLSP parameters. The longest plastron lifetime was on a 304 stainless steel sample that was submerged in distilled water and maintained a plastron for 41 days, the length of time of the study, with no signs of degradation. Also demonstrated for the first time is the precise control of pulse fluence and pulse count to produce three unique classes of surface micron/nano-structuring on titanium.

Original languageEnglish (US)
Title of host publicationLaser-Based Micro- and Nanoprocessing IX
EditorsUdo Klotzbach, Kunihiko Washio, Craig B. Arnold
ISBN (Electronic)9781628414417
StatePublished - 2015
EventLaser-Based Micro- and Nanoprocessing IX - San Francisco, United States
Duration: Feb 10 2015Feb 12 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherLaser-Based Micro- and Nanoprocessing IX
Country/TerritoryUnited States
CitySan Francisco


  • Femtosecond laser
  • Laser microstructuring
  • Plastron
  • Superhydrophobic
  • Ultrashort laser
  • Wetting properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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