Journal
ACTA BIOMATERIALIA
Volume 6, Issue 10, Pages 4060-4064Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.actbio.2010.04.016
Keywords
Water strider; Insect; Atomic force microscopy; Micro/nanostructures; Anti-wetting
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Water striders demonstrate an amazing talent which enables them to effectively row across water surfaces without immobilization This ability has previously been ascribed to the wax-like chemistry of the small hairs (setae) found on the legs, and theoretically attributed to the nano/microscaled hierarchical architecture of individual seta using the Cassie-Baxter equations Here we show experimentally the strength of the contribution of the seta surface architecture to superhydrophobicity by maintaining identical surface chemistry (thin and thick coating of the setae with polychmethylsiloxane) Atomic force microscopy-based force and adhesion measurements of single uncoated and coated seta interacting with water quantitatively demonstrate the efficiency of the topographical component of the setae for repelling water. (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved.
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