Evaporation of Ethanol-Water Binary Mixture Sessile Liquid Marbles

Chin Hong Ooi, Edward Bormashenko, Anh V. Nguyen, Geoffrey M. Evans, Dzung V. Dao, Nam Trung Nguyen

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Liquid marble is a liquid droplet coated with particles. Recently, the evaporation process of a sessile liquid marble using geometric measurements has attracted great attention from the research community. However, the lack of gravimetric measurement limits further insights into the physical changes of a liquid marble during the evaporation process. Moreover, the evaporation process of a marble containing a liquid binary mixture has not been reported before. The present paper investigates the effective density and the effective surface tension of an evaporating liquid marble that contains aqueous ethanol at relatively low concentrations. The effective density of an evaporating liquid marble is determined from the concurrent measurement of instantaneous mass and volume. Density measurements combined with surface profile fitting provide the effective surface tension of the marble. We found that the density and surface tension of an evaporating marble are significantly affected by the particle coating.

Original languageEnglish
Pages (from-to)6097-6104
Number of pages8
JournalLangmuir
Volume32
Issue number24
DOIs
StatePublished - 21 Jun 2016

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