Facile adhesion-tuning of superhydrophobic surfaces between “lotus” and “petal” effect and their influence on icing and deicing properties

dc.contributor.authorNine, M.
dc.contributor.authorTung, T.
dc.contributor.authorAlotaibi, F.
dc.contributor.authorTran, D.
dc.contributor.authorLosic, D.
dc.date.issued2017
dc.description.abstractAdhesion behavior of superhydrophobic (SH) surfaces is an active research field related to various engineering applications in controlled microdroplet transportation, self-cleaning, deicing, biochemical separation, tissue engineering, and water harvesting. Herein, we report a facile approach to control droplet adhesion, bouncing and rolling on properties of SH surfaces by tuning their air-gap and roughness-height by altering the concentrations of poly dimethyl-siloxane (PDMS). The optimal use of PDMS (4-16 wt %) in a dual-scale (nano- and microparticles) composite enables control of the specific surface area (SSA), pore volume, and roughness of matrices that result in a well-controlled adhesion between water droplets and SH surfaces. The sliding angles of these surfaces were tuned to be varied between 2 ± 1 and 87 ± 2°, which are attributed to the transformation of the contact type between droplet and surface from "point contact" to "area contact". We further explored the effectiveness of these low and high adhesive SH surfaces in icing and deicing actions, which provides a new insight into design highly efficient and low-cost ice-release surface for cold temperature applications. Low adhesion (lotus effect) surface with higher pore-volume exhibited relatively excellent ice-release properties with significant icing delay ability principally attributed to the large air gap in the coating matrix than SH matrix with high adhesion (petal effect).
dc.description.statementofresponsibilityMd J. Nine, Tran Thanh Tung, Faisal Alotaibi, Diana N. H. Tran and Dusan Losic
dc.identifier.citationACS applied materials & interfaces, 2017; 9(9):8393-8402
dc.identifier.doi10.1021/acsami.6b16444
dc.identifier.issn1944-8244
dc.identifier.issn1944-8252
dc.identifier.orcidNine, M. [0000-0002-5740-8627]
dc.identifier.orcidTung, T. [0000-0002-1535-5109]
dc.identifier.orcidTran, D. [0000-0002-4023-3373]
dc.identifier.orcidLosic, D. [0000-0002-1930-072X]
dc.identifier.urihttp://hdl.handle.net/2440/104992
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/IH150100003
dc.rightsCopyright © 2017 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acsami.6b16444
dc.subjectdeicing
dc.subjectlotus effect
dc.subjectpetal effect
dc.subjectporosity
dc.subjectroughness
dc.subjectsuperhydrophobicity
dc.titleFacile adhesion-tuning of superhydrophobic surfaces between “lotus” and “petal” effect and their influence on icing and deicing properties
dc.typeJournal article
pubs.publication-statusPublished

Files