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Biomimicked superhydrophobic polymeric and carbon surfaces / Chandra S. Sharma in Industrial & engineering chemistry research, Vol. 50 N° 23 (Décembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13012–13020 Titre : Biomimicked superhydrophobic polymeric and carbon surfaces Type de document : texte imprimé Auteurs : Chandra S. Sharma, Auteur ; Kumar Abhishek, Auteur ; Hari Katepalli, Auteur Année de publication : 2012 Article en page(s) : pp. 13012–13020 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon  Polymer Résumé : We report two direct and easy ways of fabricating stable, superhydrophobic polymeric and carbon surfaces directly by biomimicking the patterns found on natural plant leaves by micromolding and nanoimprint lithography. Two distinct classes of naturally occurring microtextures on superhydrophobic leaves were mimicked in this study, which include leaves of Elephant creeper (Argyreia Nervosa) and Nasturtium (Tropaeolum Majus). These show structural superhydrophobicity derived from high aspect ratio hairs and lower aspect ratio microtextures, respectively. Both the textures could be replicated by micromolding in different polymers, polydimethylsiloxane, polystyrene, and an organic resorcinol-formaldehyde (RF) gel. Patterned RF gel surfaces yielded superhydrophobic carbon surfaces upon pyrolysis because RF gel is a polymer precursor to glassy carbon. The nanoimprint lithography could be used for a direct transfer of the lower aspect ratio leaf patterns on the surfaces of various other polymers like poly(ethylene terephthalate) and poly(methyl methacrylate). DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200369r [article] Biomimicked superhydrophobic polymeric and carbon surfaces [texte imprimé] / Chandra S. Sharma, Auteur ; Kumar Abhishek, Auteur ; Hari Katepalli, Auteur . - 2012 . - pp. 13012–13020. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13012–13020 Mots-clés : Carbon  Polymer Résumé : We report two direct and easy ways of fabricating stable, superhydrophobic polymeric and carbon surfaces directly by biomimicking the patterns found on natural plant leaves by micromolding and nanoimprint lithography. Two distinct classes of naturally occurring microtextures on superhydrophobic leaves were mimicked in this study, which include leaves of Elephant creeper (Argyreia Nervosa) and Nasturtium (Tropaeolum Majus). These show structural superhydrophobicity derived from high aspect ratio hairs and lower aspect ratio microtextures, respectively. Both the textures could be replicated by micromolding in different polymers, polydimethylsiloxane, polystyrene, and an organic resorcinol-formaldehyde (RF) gel. Patterned RF gel surfaces yielded superhydrophobic carbon surfaces upon pyrolysis because RF gel is a polymer precursor to glassy carbon. The nanoimprint lithography could be used for a direct transfer of the lower aspect ratio leaf patterns on the surfaces of various other polymers like poly(ethylene terephthalate) and poly(methyl methacrylate). DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie200369r