In this paper, floating liquid marbles are optically transported on a photosensitive surfactant-laden solution by light-induced Marangoni flows. They show a remarkable upstream motion at a low substrate thickness due to surface deformation. We demonstrate that this anti-Marangoni motion is driven by the flow-induced deformation of the liquid surface, which gravity-propels the marble against the surface flow, in a way similar to a child descending a slide. We thus call this new behaviour the “slide effect”.
Reference:
Reference:
Light-Driven Transport of a Liquid Marble with and against Surface Flows
N. Kavokine, M. Anyfantakis, M. Morel, S. Rudiuk, T. Bickel, D. Baigl*
Angew. Chem. Int. Ed. 2016, 2016, 55, 11183 –11187
-doi : 10.1002/anie.201603639