Building microscopic soccer balls with evaporating colloidal fakir drops

Álvaro G. Marín, Hanneke Gelderblom, Arturo Susarrey-Arce, Arie van Houselt, Leon Lefferts, Johannes G.E. Gardeniers, Detlef Lohse, Jacco H. Snoeijer

Research output: Contribution to journalArticleAcademicpeer-review

71 Citations (Scopus)

Abstract

Evaporation-driven particle self-assembly can be used to generate three-dimensional microstructures. We present a unique method to create colloidal microstructures in which we can control the amount of particles and their packing fraction. To this end, we evaporate colloidal dispersion droplets on a special type of superhydrophobic microstructured surface, on which the droplet remains in Cassie-Baxter state during the entire evaporative process. The remainders of the droplet consist of a massive spherical cluster of the microspheres, with diameters ranging from a few tens up to several hundreds of microns. We present scaling arguments to show how the final particle packing fraction of these balls depends on the dynamics of the droplet evaporation, particle size, and number of particles in the system.

Original languageEnglish
Pages (from-to)16455-16458
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America (PNAS)
Volume109
Issue number41
DOIs
Publication statusPublished - 9 Oct 2012
Externally publishedYes

Keywords

  • Microparticle deposition
  • Superhydrophobicity

Fingerprint Dive into the research topics of 'Building microscopic soccer balls with evaporating colloidal fakir drops'. Together they form a unique fingerprint.

  • Cite this

    Marín, Á. G., Gelderblom, H., Susarrey-Arce, A., van Houselt, A., Lefferts, L., Gardeniers, J. G. E., Lohse, D., & Snoeijer, J. H. (2012). Building microscopic soccer balls with evaporating colloidal fakir drops. Proceedings of the National Academy of Sciences of the United States of America (PNAS), 109(41), 16455-16458. https://doi.org/10.1073/pnas.1209553109