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 journalArticle

29 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

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Contacts (fluid mechanics)
Atomic force microscopy
Deposits
deposits
atomic force microscopy
Nanoparticles
nanoparticles
Nanostructures
Evaporation
evaporation
slopes
rings
Experiments
Direction compound

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics

Cite this

Nanoparticle deposits near the contact line of pinned volatile droplets : Size and shape revealed by atomic force microscopy. / Askounis, Alexandros; Orejon, Daniel Mantecon; Koutsos, Vasileios; Sefiane, Khellil; Shanahan, Martin E.R.

In: Soft Matter, Vol. 7, No. 9, 07.05.2011, p. 4152-4155.

Research output: Contribution to journalArticle

Askounis, Alexandros ; Orejon, Daniel Mantecon ; Koutsos, Vasileios ; Sefiane, Khellil ; Shanahan, Martin E.R. / Nanoparticle deposits near the contact line of pinned volatile droplets : Size and shape revealed by atomic force microscopy. In: Soft Matter. 2011 ; Vol. 7, No. 9. pp. 4152-4155.
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