Cylindrical chains of water drops condensing on microstructured lubricant-infused surfaces.

نویسندگان

  • Tadashi Kajiya
  • Sanghyuk Wooh
  • Yunchan Lee
  • Kookheon Char
  • Doris Vollmer
  • Hans-Jürgen Butt
چکیده

We studied the condensation of water drops on a micro-structured lubricant-infused surfaces. Hierarchical micro-prism surfaces were fabricated by soft imprinting with wet TiO2 nanoparticle paste. After hydrophobization, the patterned surfaces were infused with silicone oil as a lubricant. When cooling at high humidity (over 80%), water drops nucleate and start growing on the surface. Once they have reached a certain size, the drops at neighboring channels of the micro-prisms attract each other and spontaneously form cylindrical chains. These chains of drops align perpendicular to the prism array. The morphology and the length-to-width ratio of the chains of drops depend on the thickness of the lubricant layer. This new concept of water drop alignment on lubricant-infused surfaces offers a new route for pattern formation with condensed drops.

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عنوان ژورنال:
  • Soft matter

دوره 12 46  شماره 

صفحات  -

تاریخ انتشار 2016