Ring-shaped sessile droplet

Svyatoslav S. Chugunov, Douglas L. Schulz, Iskander S. Akhatov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

It is recognized that small liquid droplet placed on the solid substrate forms equilibrium contact angle that can be obtained from well-known Young's law. Previously, deviations from Young's law were demonstrated for the droplets exposed to external fields (gravity, electric, etc) and for the droplets on non-homogeneous substrates. This work reveals that the Young's equilibrium contact angle can be altered by geometrical reasons only. We consider a ring-shaped droplet on a solid substrate as a test structure for our discussion. We use the global energy consideration for analysis of system equilibrium for the case of freely deposited liquid with no external forces applied. The theoretical analysis shows that steady ring-shaped liquid structure on a solid substrate does exist with contact angles on both contact lines to be different from the Young's equilibrium contact angle.

Original languageEnglish
Title of host publicationFluids and Thermal Systems; Advances for Process Industries
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages69-76
Number of pages8
EditionPARTS A AND B
ISBN (Print)9780791854921
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States
Duration: 11 Nov 201117 Nov 2011

Publication series

NameASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
NumberPARTS A AND B
Volume6

Conference

ConferenceASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Country/TerritoryUnited States
CityDenver, CO
Period11/11/1117/11/11

Keywords

  • Contact angle
  • Global energy
  • Ring shape
  • Statics
  • Surface tension

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