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Directional Oil Sliding Surfaces with Hierarchical Anisotropic Groove Microstructures
Author(s) -
Kang Seong Min,
Lee Chanseok,
Kim Hong Nam,
Lee Byung Jun,
Lee Ji Eun,
Kwak Moon Kyu,
Suh KahpYang
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.201302083
Subject(s) - groove (engineering) , materials science , anisotropy , photoresist , microstructure , lithography , nanotechnology , optics , composite material , optoelectronics , metallurgy , physics , layer (electronics)
A robust directional oil sliding surface is presented by utilizing re‐entrant micro‐groove arrays inspired from the microgrooves of rice leaf. The overhang micro‐groove arrays are shown to provide two primary goals of “omniphobicty” and “anisotropic sliding” with DI water ( γ l v= 72.1 mN/m) as well as mineral oil ( γ l v= 28 mN/m) and conventional photoresist.