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 language | English |
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Pages (from-to) | 4152-4155 |
Number of pages | 4 |
Journal | Soft Matter |
Volume | 7 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2011 |
Externally published | Yes |