title: Evaporation of Ethanol-Water Binary Mixture Sessile Liquid Marbles.
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.
authors.affiliation: Queensland Micro- and Nanotechnology Centre, Griffith University , 170 Kessels Road, Nathan, Queensland 4111, Australia.
authors.forename: Chin Hong
authors.initials: CH
authors.lastname: Ooi
authors.affiliation: Chemical Engineering and Biotechnology Department, Ariel University , P.O.B. 3, Ariel 40700, Israel.
authors.forename: Edward
authors.initials: E
authors.lastname: Bormashenko
authors.affiliation: School of Chemical Engineering, University of Queensland , St. Lucia, Queensland 4072, Australia.
authors.forename: Anh V
authors.initials: AV
authors.lastname: Nguyen
authors.affiliation: School of Engineering, University of Newcastle , Callaghan, NSW 2308, Australia.
authors.forename: Geoffrey M
authors.initials: GM
authors.lastname: Evans
authors.affiliation: Queensland Micro- and Nanotechnology Centre, Griffith University , 170 Kessels Road, Nathan, Queensland 4111, Australia.
authors.forename: Dzung V
authors.initials: DV
authors.lastname: Dao
authors.affiliation: Queensland Micro- and Nanotechnology Centre, Griffith University , 170 Kessels Road, Nathan, Queensland 4111, Australia.
authors.forename: Nam-Trung
authors.initials: NT
authors.lastname: Nguyen