Daniel Orejon - Nanoparticle deposits near the contact line of pinned volatile droplets: size and shape revealed by atomic force microscopy

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      Publication Details (including relevant citation   information): Askounis, Alexandros, Orejon, Daniel,   Koutsos, Vasileios, Sefiane, Khellil, Shanahan, Martin E. R.,   Soft Matter, 2011, 7 (9), pp   4152-4155

      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.

      Address (URL): http://dx.doi.org/10.1039/C1SM05241A