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dc.contributor.authorGupta, Krishnkumar-
dc.contributor.authorKolwankar, Kiran M.-
dc.contributor.authorDharmadhikari, Jayashree A.-
dc.contributor.authorGore, Bhalchandra-
dc.contributor.authorDharmadhikari, A.K.-
dc.identifier.citationPhysics of Fluids, 2020, Vol.32, p121701en_US
dc.descriptionRestricted Accessen_US
dc.description.abstractWe present a systematic study of the laser-driven Marangoni flow and curvature induced vortex formation in a copper sulfate pentahydrate solution, visualized by dispersed carbon nanotube (CNT) bundles. The experiments are carried out using different objectives of numerical aperture (NA) in the range of 0.1ā€“0.6 to investigate the effect of focusing on the flow dynamics. The flow velocities measured (for 0.1 NA) are in the range of 2 mm/sā€“5 mm/s depending on the size of CNTs. Both primary and secondary vortices are observed in our experiment. In the primary vortex, with a sixfold increase in NA, a tenfold increase in the angular velocity of CNTs is measured. We also discuss the important role played by the curvature of the droplet in the vortex formation. The numerical simulations carried out for flow velocity are in agreement with the experimental values.en_US
dc.publisherAmerican Institute of Physicsen_US
dc.rights2020 American Institute of Physicsen_US
dc.titleLaser-driven Marangoni flow and vortex formation in a liquid dropleten_US
dc.additionalSupplementary Information Avaliableen_US
Appears in Collections:Research Papers (LAMP)

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