Jump to main content
Jump to site search

Issue 28, 2017
Previous Article Next Article

On the origin of the driving force in the Marangoni propelled gas bubble trapping mechanism

Author affiliations

Abstract

Gas bubbles can be trapped and then manipulated with laser light. In this report, we propose the detailed optical trapping mechanism of gas bubbles confined inside a thin light-absorbing liquid layer between two glass plates. The necessary condition of bubble trapping in this case is the direct absorption of light by the solution containing a dye. Due to heat release, fluid whirls propelled by the surface Marangoni effect at the liquid/gas interface emerge and extend to large distances. We report the experimental microscopic observation of the origin of whirls at an initially flat liquid/air interface as well as at the curved interface of a liquid/gas bubble and support this finding with advanced numerical simulations using the finite element method within the COMSOL Multiphysics platform. The simulation results were in good agreement with the observations, which allowed us to propose a simple physical model for this particular trapping mechanism, to establish the origin of forces attracting bubbles toward a laser beam and to predict other phenomena related to this effect.

Graphical abstract: On the origin of the driving force in the Marangoni propelled gas bubble trapping mechanism

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 Mar 2017, accepted on 20 Jun 2017 and first published on 20 Jun 2017


Article type: Paper
DOI: 10.1039/C7CP01986F
Citation: Phys. Chem. Chem. Phys., 2017,19, 18695-18703
  •   Request permissions

    On the origin of the driving force in the Marangoni propelled gas bubble trapping mechanism

    A. Miniewicz, C. Quintard, H. Orlikowska and S. Bartkiewicz, Phys. Chem. Chem. Phys., 2017, 19, 18695
    DOI: 10.1039/C7CP01986F

Search articles by author

Spotlight

Advertisements