Making micro soccer balls: Spherical macro-clusters of colloidal particles by droplet evaporation on superhydrophobic surfaces

Research output: Contribution to conferencePaperAcademic

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Abstract

Imagine a clean capillary droplet evaporating in a fakir state on a superhydrophobic micro-structured surface. When the superhydrophobicity is robust enough, the droplet will always remain on top of the micro-structure and the droplet will retain its spherical shape until its ``death.'' Very often one can observe the remains of the impurities within the droplet left on top of the structure at the end of the process. In this work, instead of using clean liquid droplets, we use dilute colloidal dispersion droplets of monodisperse polymer micro-spheres (sizes from 0.2 to 2μm ). The colloidal dispersion droplet retains its spherical shape during its whole life, even when the whole solution has been evaporated. The remaining object consist on a spherical-shaped massive cluster of particles with diameters ranging from a few tens of microns up to several hundreds of microns, depending on the amount of micro-particles present in the solution and on the final packing fraction. We will discuss on the different observed packing fractions, particle arrangements and their governing parameters. Additionally some predictions will also be introduced.
Original languageUndefined
Publication statusPublished - 2011
Event64th Annual Meeting of the APS Division of Fluid Dynamics, APS-DFD 2011 - Baltimore, Baltimore, United States
Duration: 20 Nov 201122 Nov 2011
Conference number: 64

Conference

Conference64th Annual Meeting of the APS Division of Fluid Dynamics, APS-DFD 2011
Abbreviated titleAPS-DFD
CountryUnited States
CityBaltimore
Period20/11/1122/11/11

Keywords

  • IR-94689

Cite this

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title = "Making micro soccer balls: Spherical macro-clusters of colloidal particles by droplet evaporation on superhydrophobic surfaces",
abstract = "Imagine a clean capillary droplet evaporating in a fakir state on a superhydrophobic micro-structured surface. When the superhydrophobicity is robust enough, the droplet will always remain on top of the micro-structure and the droplet will retain its spherical shape until its ``death.'' Very often one can observe the remains of the impurities within the droplet left on top of the structure at the end of the process. In this work, instead of using clean liquid droplets, we use dilute colloidal dispersion droplets of monodisperse polymer micro-spheres (sizes from 0.2 to 2μm ). The colloidal dispersion droplet retains its spherical shape during its whole life, even when the whole solution has been evaporated. The remaining object consist on a spherical-shaped massive cluster of particles with diameters ranging from a few tens of microns up to several hundreds of microns, depending on the amount of micro-particles present in the solution and on the final packing fraction. We will discuss on the different observed packing fractions, particle arrangements and their governing parameters. Additionally some predictions will also be introduced.",
keywords = "IR-94689",
author = "{Gomez Marin}, Alvaro and {Susarrey Arce}, A. and Gardeniers, {Johannes G.E.} and Detlef Lohse",
year = "2011",
language = "Undefined",
note = "null ; Conference date: 20-11-2011 Through 22-11-2011",

}

Gomez Marin, A, Susarrey Arce, A, Gardeniers, JGE & Lohse, D 2011, 'Making micro soccer balls: Spherical macro-clusters of colloidal particles by droplet evaporation on superhydrophobic surfaces' Paper presented at 64th Annual Meeting of the APS Division of Fluid Dynamics, APS-DFD 2011, Baltimore, United States, 20/11/11 - 22/11/11, .

Making micro soccer balls: Spherical macro-clusters of colloidal particles by droplet evaporation on superhydrophobic surfaces. / Gomez Marin, Alvaro; Susarrey Arce, A.; Gardeniers, Johannes G.E.; Lohse, Detlef.

2011. Paper presented at 64th Annual Meeting of the APS Division of Fluid Dynamics, APS-DFD 2011, Baltimore, United States.

Research output: Contribution to conferencePaperAcademic

TY - CONF

T1 - Making micro soccer balls: Spherical macro-clusters of colloidal particles by droplet evaporation on superhydrophobic surfaces

AU - Gomez Marin, Alvaro

AU - Susarrey Arce, A.

AU - Gardeniers, Johannes G.E.

AU - Lohse, Detlef

PY - 2011

Y1 - 2011

N2 - Imagine a clean capillary droplet evaporating in a fakir state on a superhydrophobic micro-structured surface. When the superhydrophobicity is robust enough, the droplet will always remain on top of the micro-structure and the droplet will retain its spherical shape until its ``death.'' Very often one can observe the remains of the impurities within the droplet left on top of the structure at the end of the process. In this work, instead of using clean liquid droplets, we use dilute colloidal dispersion droplets of monodisperse polymer micro-spheres (sizes from 0.2 to 2μm ). The colloidal dispersion droplet retains its spherical shape during its whole life, even when the whole solution has been evaporated. The remaining object consist on a spherical-shaped massive cluster of particles with diameters ranging from a few tens of microns up to several hundreds of microns, depending on the amount of micro-particles present in the solution and on the final packing fraction. We will discuss on the different observed packing fractions, particle arrangements and their governing parameters. Additionally some predictions will also be introduced.

AB - Imagine a clean capillary droplet evaporating in a fakir state on a superhydrophobic micro-structured surface. When the superhydrophobicity is robust enough, the droplet will always remain on top of the micro-structure and the droplet will retain its spherical shape until its ``death.'' Very often one can observe the remains of the impurities within the droplet left on top of the structure at the end of the process. In this work, instead of using clean liquid droplets, we use dilute colloidal dispersion droplets of monodisperse polymer micro-spheres (sizes from 0.2 to 2μm ). The colloidal dispersion droplet retains its spherical shape during its whole life, even when the whole solution has been evaporated. The remaining object consist on a spherical-shaped massive cluster of particles with diameters ranging from a few tens of microns up to several hundreds of microns, depending on the amount of micro-particles present in the solution and on the final packing fraction. We will discuss on the different observed packing fractions, particle arrangements and their governing parameters. Additionally some predictions will also be introduced.

KW - IR-94689

M3 - Paper

ER -

Gomez Marin A, Susarrey Arce A, Gardeniers JGE, Lohse D. Making micro soccer balls: Spherical macro-clusters of colloidal particles by droplet evaporation on superhydrophobic surfaces. 2011. Paper presented at 64th Annual Meeting of the APS Division of Fluid Dynamics, APS-DFD 2011, Baltimore, United States.