Answers are grounded in this paper and cite their sources.
Microparticle manipulation: The photoisomerization of surfactants adsorbed at a gas–liquid interface drives a Marangoni flow that can be used for the trapping and manipulation of small particles. By switching the laser wavelength, a flow either into or away from the focal spot can be induced. The picture shows a microparticle trapped in the focal region by the inflow.
No takes yet. Share an insight, caveat, or question.
Varanakkottu et al. (2013) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: