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Type: Artigo de periódico
Title: Liquid Templating For Nanoparticle Organization Into Complex Patterns.
Author: Rezende, Camila A
Lee, Lay-Theng
Galembeck, Fernando
Abstract: Dewetting of thin films of charged polymer solutions produces complex patterns that can be applied to direct nanoparticle organization on solid substrates. The morphology produced by dewetting can be controlled by the solution properties, temperature, and substrate wetting. In this work, new results on this liquid-template self-assembly system are presented, with special emphasis on producing large arrays of organized nanoparticles. On a hydrophilic substrate with complete wetting, the patterns include polygonal networks and parallel-track arrays that extend over several hundreds of microns. These large structures are formed under well-controlled drying conditions and characterized by scanning electron microscopy, which is better suited for the examination of large as well as small areas than atomic force microscopy. On partial wetting substrates, new patterns are observed, including a complex set of parallel curved bands with variable particle number densities.
Citation: Langmuir : The Acs Journal Of Surfaces And Colloids. v. 23, n. 5, p. 2824-8, 2007-Feb.
Rights: fechado
Identifier DOI: 10.1021/la062370s
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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