Nanoparticle deposits near the contact line of pinned volatile droplets: Size and shape revealed by atomic force microscopy

Alexandros Askounis, Daniel Mantecon Orejon, Vasileios Koutsos, Khellil Sefiane, Martin E.R. Shanahan

    Research output: Contribution to journalArticlepeer-review

    35 Citations (Scopus)

    Abstract

    We report on the structure of ring deposits formed following the free evaporation of a sessile droplet containing nanoparticles. The nanostructure of the evaporatively formed deposits was revealed using atomic force microscopy (AFM). The structures were found to form a peak about 5 microns wide and one micron high and to exhibit a gentle slope gradually increasing in height in the direction of the three phase contact line motion. A theory is proposed to explain the formation and shape of these deposits. A comparison between the theory and the experiments shows a very good qualitative and quantitative agreement.

    Original languageEnglish
    Pages (from-to)4152-4155
    Number of pages4
    JournalSoft Matter
    Volume7
    Issue number9
    DOIs
    Publication statusPublished - May 7 2011

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Condensed Matter Physics

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