Nanotexturation-induced extreme wettability of an elemental tellurium coating

A combination of microscale and nanoscale texturation has been achieved in hierarchically structured Te coatings deposited onto a variety of substrata viaself-catalyzed vapor transport. The coating thickness and roughness of the deposited Te surfaces are tunable viacontrol over the reaction temperat...

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Bibliographic Details
Published inJournal of materials chemistry Vol. 22; no. 8; pp. 3335 - 3339
Main Authors Velázquez, Jesús M., Gaikwad, Anil V., Rout, Tapan K., Baier, Robert E., Furlani, Edward S., Banerjee, Sarbajit
Format Journal Article
LanguageEnglish
Published 01.01.2012
Subjects
Coating
Deposition
Droplets
Nanocomposites
Nanomaterials
Nanostructure
Roughness
Wettability
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Summary:A combination of microscale and nanoscale texturation has been achieved in hierarchically structured Te coatings deposited onto a variety of substrata viaself-catalyzed vapor transport. The coating thickness and roughness of the deposited Te surfaces are tunable viacontrol over the reaction temperature and diffusion flux. The intricately structured surfaces exhibit sub-40 ms flash spreading of water to eventual macroscopic contact angles of 0 degree without any need for surface cleaning. The wettability characteristics of the surface are ascribed to the role of the hierarchical roughness in stabilizing the droplet/surface interactions in the Wenzel regime. The surfaces retain their hydrophilic properties over several months and are especially notable as a conductive addition to materials exhibiting unusual superwetting behaviour.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0959-9428
1364-5501
DOI:10.1039/C1JM14664E