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Wetting Transitions in Underwater Oleophobic Surface of Brass
Author(s) -
Hejazi Vahid,
Nyong Aniedi E.,
Rohatgi Pradeep K.,
Nosonovsky Michael
Publication year - 2012
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.201202516
Subject(s) - brass , wetting , materials science , contact angle , substrate (aquarium) , surface finish , underwater , surface roughness , composite material , metallurgy , copper , oceanography , geology
An oil droplet in water can be in the Cassie state (with water and/or air trapped between the solid and oil) with a high contact angle (top left) or in the Wenzel state (top right). Depending on the roughness of the brass substrate, both states with high (bottom left) and low (bottom right) contact angle are observed.