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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