Controlled Uniform Coating from the Interplay of Marangoni Flows and Surface-Adsorbed Macromolecules. Author Hyoungsoo Kim, François Boulogne, Eujin Um, Ian Jacobi, Ernie Button, Howard Stone Publication Year 2016 Type Journal Article Abstract Surface coatings and patterning technologies are essential for various physicochemical applications. In this Letter, we describe key parameters to achieve uniform particle coatings from binary solutions. First, multiple sequential Marangoni flows, set by solute and surfactant simultaneously, prevent nonuniform particle distributions and continuously mix suspended materials during droplet evaporation. Second, we show the importance of particle-surface interactions that can be established by surface-adsorbed macromolecules. To achieve a uniform deposit in a binary mixture, a small concentration of surfactant and surface-adsorbed polymer (0.05 wt% each) is sufficient, which offers a new physicochemical avenue for control of coatings. Journal Phys Rev Lett Volume 116 Issue 12 Pages 124501 Date Published 2016 Mar 25 ISSN Number 1079-7114 DOI 10.1103/PhysRevLett.116.124501 Alternate Journal Phys Rev Lett PMID 27058080 PubMedGoogle ScholarBibTeXEndNote X3 XML