Directional wetting on chemically stripe-patterned surfaces: Static droplet shapes and dynamic motion on gradients

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Abstract

The directional wetting characteristics of droplets on chemically defined stripe-patterned anisotropic substrates are briefly reviewed. The static droplet shape as well as the observed contact angles exhibit unique scaling behavior as a function of the macroscopic wettability, as arising from patterns consisting of alternating hy-drophilic and hydrophobic stripes. In addition, the motion of liquid from surface regions with low macroscopic wettability towards more wetting areas is described. Linear patterns are presented, which induce liquid movement along the chemically defined stripes giving rise to a macroscopic gradient in surface energy. Finally, we show that lattice Boltzmann modeling enables semrquantitatively accurate simulation of the experimental observations.

Original languageEnglish
Title of host publicationNSTI
Subtitle of host publicationAdvanced Materials - TechConnect Briefs 2015
EditorsBart Romanowicz, Matthew Laudon
PublisherTaylor & Francis
Pages480-483
Number of pages4
Volume1
ISBN (Electronic)9781498747271
Publication statusPublished - 1 Jan 2015
Event10th Annual TechConnect World Innovation Conference and Expo 2015 - Washington, United States
Duration: 14 Jun 201517 Jun 2015
Conference number: 10

Conference

Conference10th Annual TechConnect World Innovation Conference and Expo 2015
CountryUnited States
CityWashington
Period14/06/1517/06/15
OtherHeld Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference

Keywords

  • Anisotropic wetting
  • Scaling
  • Self-assembled monolayer
  • Surface tension gradient

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  • Cite this

    Kooij, E. S., Jansen, H. P., & Zandvliet, H. J. W. (2015). Directional wetting on chemically stripe-patterned surfaces: Static droplet shapes and dynamic motion on gradients. In B. Romanowicz, & M. Laudon (Eds.), NSTI: Advanced Materials - TechConnect Briefs 2015 (Vol. 1, pp. 480-483). Taylor & Francis.