Sahoo, Prasana and Dhara, S and Dash, S and Raj, Baldev and Manna, Indranil and Tyagi , A K (2011) Air trapped nanocavity induced superhydrophobicity on GaN microbelt. Applied Physics Letters, 98 (4). Article No.-043103. ISSN 0003-6951

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In the present study, nanotextured surface protrusion induced superhydrophobicity in GaN microbelt is reported. The results show that along with nanometer-scale topographic features, the special air trapped nanocavities formed beneath the liquid droplet are solely responsible for the transition of superhydrophobicity having hydrophilic origin in GaN. The built-in nanocavities, ( ~ 80 nm in diameter) provide an ideal model for producing stable air trapped region. A calculation of shape of the meniscus at the interface of air and water in an isolated cavity correlates well with the macroscopic surface wetting behavior.

Item Type: Article
Subjects: Engineering Materials
Depositing User: Bidhan Chaudhuri
Date Deposited: 21 May 2012 07:43
Last Modified: 21 May 2012 07:59

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