Ferrohydrodynamics governed evaporation phenomenology of sessile droplets Abhishek Kaushal, Vishwajeet Mehandia, Purbarun Dhar Physics of Fluids, 2021 In this article, we report the morphing of the evaporation kinetics of paramagnetic saline sessile droplets in the presence of a magnetic field stimulus. We explore the evaporation kinetics both experimentally and theoretically and study the kinetics on hydrophilic and superhydrophobic substrates for various magnetic field strengths. We show that the evaporation rates of the paramagnetic droplets are augmented significantly and are observed to be a direct function of the magnetic field strength. Additionally, we note the modulation of the contact line transients due to the presence of the field. The influential role of solvated ions in modulating the flow behavior, and subsequently the evaporation, of droplets is present in the literature. Taking cue, we show using particle image velocimetry and infrared thermography that the magnetic field augments the thermo-solutal advection within the droplets. A mathematical analysis, based on the different internal advection mechanisms, has been proposed. We reveal that the magneto-thermal and magneto-solutal modes of internal ferrohydrodynamics are the dominant mechanisms behind the augmented evaporation dynamics. The experimentally obtained internal velocities are in excellent compliance with the model predictions. Furthermore, the enhanced evaporation rates are predicted accurately using a proposed model to scale the interfacial shear modified Stefan flow. The inferences drawn from these findings may hold several important implications in magnetic field-modulated microfluidic thermal and species transport systems.
Motion and Orientation of Janus Spherical Particles at a Liquid–Air Interface Governed by the Moses Effect A Kaushal, O Gendelman, S Shoval, K Kuroiwa, Y Oaki, S Fujii, ... Langmuir 40 (33), 17835-17842 , 2024 2024.0 Citations: 4
Universality of scaling laws governing contact and spreading time spans of bouncing liquid marbles and its physical origin A Kaushal, S Shoval, BP Binks, E Bormashenko Langmuir 39 (35), 12488-12496 , 2023 2023.0 Citations: 8
Regulating complex fluid sessile droplet evaporation kinetics by suppression of internal electro-convection A Kaushal, V Mehandia, P Dhar Colloids and Surfaces A: Physicochemical and Engineering Aspects 653, 130010 , 2022 2022.0 Citations: 8
Interfacial-and electro-ferro-hydrodynamics driven vaporization of sessile droplets A Kaushal 2022.0
Competing thermal and solutal advection decelerates droplet evaporation on heated surfaces A Kaushal, V Jaiswal, V Mehandia, P Dhar European Journal of Mechanics-B/Fluids 91, 129-140 , 2022 2022.0 Citations: 17
Ferrohydrodynamics governed evaporation phenomenology of sessile droplets A Kaushal, V Mehandia, P Dhar Physics of Fluids 33 (2) , 2021 2021.0 Citations: 24
Soluto-thermo-hydrodynamics influenced evaporation kinetics of saline sessile droplets A Kaushal, V Jaiswal, V Mehandia, P Dhar European Journal of Mechanics-B/Fluids 83, 130-140 , 2020 2020.0 Citations: 37
Thermal gradient influenced modulated evaporation dynamics of saline sessile droplets A Kaushal, P Dhar APS Division of Fluid Dynamics Meeting Abstracts, M04. 034 , 2019 2019.0
Soluto-thermo-hydrodynamics influenced evaporation of sessile droplets A Kaushal, V Jaiswal, V Mehandia, P Dhar
MOST CITED SCHOLAR PUBLICATIONS
Soluto-thermo-hydrodynamics influenced evaporation kinetics of saline sessile droplets A Kaushal, V Jaiswal, V Mehandia, P Dhar European Journal of Mechanics-B/Fluids 83, 130-140 , 2020 2020.0 Citations: 37
Ferrohydrodynamics governed evaporation phenomenology of sessile droplets A Kaushal, V Mehandia, P Dhar Physics of Fluids 33 (2) , 2021 2021.0 Citations: 24
Competing thermal and solutal advection decelerates droplet evaporation on heated surfaces A Kaushal, V Jaiswal, V Mehandia, P Dhar European Journal of Mechanics-B/Fluids 91, 129-140 , 2022 2022.0 Citations: 17
Universality of scaling laws governing contact and spreading time spans of bouncing liquid marbles and its physical origin A Kaushal, S Shoval, BP Binks, E Bormashenko Langmuir 39 (35), 12488-12496 , 2023 2023.0 Citations: 8
Regulating complex fluid sessile droplet evaporation kinetics by suppression of internal electro-convection A Kaushal, V Mehandia, P Dhar Colloids and Surfaces A: Physicochemical and Engineering Aspects 653, 130010 , 2022 2022.0 Citations: 8
Motion and Orientation of Janus Spherical Particles at a Liquid–Air Interface Governed by the Moses Effect A Kaushal, O Gendelman, S Shoval, K Kuroiwa, Y Oaki, S Fujii, ... Langmuir 40 (33), 17835-17842 , 2024 2024.0 Citations: 4
Interfacial-and electro-ferro-hydrodynamics driven vaporization of sessile droplets A Kaushal 2022.0
Thermal gradient influenced modulated evaporation dynamics of saline sessile droplets A Kaushal, P Dhar APS Division of Fluid Dynamics Meeting Abstracts, M04. 034 , 2019 2019.0
Soluto-thermo-hydrodynamics influenced evaporation of sessile droplets A Kaushal, V Jaiswal, V Mehandia, P Dhar
