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Controlling Liquid Spreading Using Microfabricated Undercut Edges
Author(s) -
Liimatainen Ville,
Sariola Veikko,
Zhou Quan
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201204696
Subject(s) - undercut , materials science , nanotechnology , composite material
A purely topographical method for controlling liquid spreading by using easy‐to‐fabricate undercut edges is reported . By periodic repetition of such edges, it is shown that multiple droplets can be patterned in well‐controlled shapes, and highly anisotropic wetting can also be achieved at a large scale. Apparent contact angles close to 180° at the edge are shown, even for low surface tension liquids.