Publications

Journal Publications

2025

Jana, R., and Mandal, S., 2025. Microscale swimming in viscosity gradients near a plane wall. Physical Review Fluids (Accepted for publication, DOI: https://doi.org/10.1103/7bxx-6ssw).

Jana, R., and Mandal, S., 2025. Particle motion in viscosity gradients near a plane wall. Physical Review Fluids, 10, 094204.

Chakraborty, P., Roy, R., and Mandal, S., 2025. Smart navigation of microswimmers in Poiseuille flow via reinforcement learning. European Physical Journal E, 48, 30.

Ramprasad, M., Mandal, S., and Mahapatra, P. S., 2025. Motion of a microswimmer in a lattice of obstacles: Effect of thermal fluctuations. Physical Review E, 111, 065402.

Guchhait, S., Sontakke, S., Mandal, S., and Dey, R., 2025. Flow fields around active droplets squeezing through tight confinements. Physical Review Fluids, 10, 044202.

Roy, R. and Mandal, S., 2025. Chemically active particles in extensional flow. Journal of Fluid Mechanics, 1008, p.A40.

Mandal, S., Mason, T.J., Croft, A.C. and Mazza, M.G., 2025. Cooperativity of Confined Nematic Microswimmers: From One to Many. Physical Review Letters, 134, 128302. Media coverage: Media Centre - Lboro, phys.org   

2024

Shreekrishna, S., Mandal, S. and Das, S., 2024. Spontaneous emergence of motion of an isotropic active particle in a Carreau fluid. Soft Matter, 20, 9683-9693.

Jadhav, S.N., Mandal, S. and Ghosh, U., 2024. Coupled bulk and interfacial transport of surfactants governs the settling of a drop towards a wall. Journal of Fluid Mechanics, 987, p.A41.

2021

Mandal, S. and Mazza, M.G., 2021. Multiparticle collision dynamics simulations of a squirmer in a nematic fluid. European Physical Journal E, 44, 64. Media coverage:  EPJ E Highlight, EurekAlert! Science News Releases, phys.org 

2020

Santra, S., Mandal, S. and Chakraborty, S., 2020. Phase-field modeling of multicomponent and multiphase flows in microfluidic systems: A review. International Journal of Numerical Methods for Heat & Fluid Flow, 31(10), pp.3089-3131.

Das, S., Mandal, S. and Chakraborty, S., 2020. Interfacial viscosity-dictated morpho-dynamics of a compound drop in linear flows. Physics of Fluids, 32, 062006. 

2019

Behera, N., Mandal, S. and Chakraborty, S., 2019. Electrohydrodynamic settling of drop in uniform electric field: beyond Stokes flow regime. Journal of Fluid Mechanics, 881, 498-523.

Poddar, A., Mandal, S., Bandopadhyay, A. and Chakraborty, S., 2019. Electrorheology of a dilute emulsion of surfactant-covered drops. Journal of Fluid Mechanics, 881, 524-550.

Santra, S., Mandal, S. and Chakraborty, S., 2019. Confinement effect on electrically induced dynamics of a droplet in shear flow. Physical Review E, 100(3), 033101.

Mandal, S. and Mazza, M.G., 2019. Multiparticle collision dynamics for tensorial nematodynamics. Physical Review E, 99(6), 063319. This paper was highlighted by Physical Review E as Editors’ Suggestion.

Poddar, A., Mandal, S., Bandopadhyay, A. and Chakraborty, S., 2019. Electrical switching of a surfactant coated drop in Poiseuille flow. Journal of Fluid Mechanics, 870, 27-66.

2018

Santra, S., Mandal, S. and Chakraborty, S., 2018. Electrohydrodynamics of confined two-dimensional liquid droplets in uniform electric field. Physics of Fluids, 30(6), 062003.

Poddar, A., Mandal, S., Bandopadhyay, A. and Chakraborty, S., 2018. Sedimentation of a surfactant-laden drop under the influence of an electric field. Journal of Fluid Mechanics, 849, 277-311.

Das, S., Mandal, S. and Chakraborty, S., 2018. Effect of transverse temperature gradient on the migration of a deformable droplet in a Poiseuille flow. Journal of Fluid Mechanics, 850, 1142- 1171.

Mandal, S., Sinha, S., Bandopadhyay, A. and Chakraborty, S., 2018. Drop deformation and emulsion rheology under the combined influence of uniform electric field and linear flow. Journal of Fluid Mechanics, 841, 408-433.

Das, S., Mandal, S. and Chakraborty, S., 2018. Effect of temperature gradient on the cross-stream migration of a surfactant-laden droplet in Poiseuille flow. Journal of Fluid Mechanics, 835, 170.

2017

Mandal, S., Das, S. and Chakraborty, S., 2017. Effect of Marangoni stress on the bulk rheology of a dilute emulsion of surfactant-laden deformable droplets in linear flows. Physical Review Fluids, 2(11), 113604.

Kaushik, P., Mandal, S. and Chakraborty, S., 2017. Transient electroosmosis of a Maxwell fluid in a rotating microchannel. Electrophoresis, 38(21), 2741-2748.

Das, S., Mandal, S. and Chakraborty, S., 2017. Cross-stream migration of a surfactant-laden deformable droplet in a Poiseuille flow. Physics of Fluids, 29(8), 082004.

Mandal, S. and Chakraborty, S., 2017. Effect of uniform electric field on the drop deformation in simple shear flow and emulsion shear rheology. Physics of Fluids, 29(7), 072109. This paper was highlighted by Physics of Fluids as Editor’s Picks.

Mandal, S. and Chakraborty, S., 2017. Uniform electric-field-induced non-Newtonian rheology of a dilute suspension of deformable Newtonian drops. Physical Review Fluids, 2(9), 093602.

Ghosh, U., Mandal, S. and Chakraborty, S., 2017. Electroosmosis over charge-modulated surfaces with finite electrical double layer thicknesses: Asymptotic and numerical investigations. Physical Review Fluids, 2(6), 064203.

Mandal, S., Chakrabarti, S. and Chakraborty, S., 2017. Effect of nonuniform electric field on the electrohydrodynamic motion of a drop in Poiseuille flow. Physics of Fluids, 29(5), 052006. This paper was highlighted by Physics of Fluids as Editor’s Picks.

Mandal, S. and Chakraborty, S., 2017. Influence of interfacial viscosity on the dielectrophoresis of drops. Physics of Fluids, 29(5), 052002.

Das, S., Mandal, S., Som, S.K. and Chakraborty, S., 2017. Effect of interfacial slip on the deformation of a viscoelastic drop in uniaxial extensional flow field. Physics of Fluids, 29(3), 032105. This paper was highlighted by Physics of Fluids as Editor’s Picks.

Das, S., Mandal, S., Som, S.K. and Chakraborty, S., 2017. Migration of a surfactant-laden droplet in non-isothermal Poiseuille flow. Physics of Fluids, 29(1), 012002.

Mandal, S., Bandopadhyay, A. and Chakraborty, S., 2017. The effect of surface charge convection and shape deformation on the settling velocity of drops in nonuniform electric field. Physics of Fluids, 29(1), 012101.

Bandopadhyay, A., Mandal, S. and Chakraborty, S., 2017. Capillary transport of two immiscible fluids in presence of electroviscous retardation. Electrophoresis, 38(5), 747-754.

Paul, R., Kumar, G.N., Mandal, S., Kishore, N.K., Pramanik, S. and Chakraborty, S., 2017. An experimental study of the electrohydrodynamic characteristics of sedimenting drops under uniform alternating electric fields. IEEE Transactions on Industry Applications, 53(6), 5838-5844.

2016

Mandal, S., Bandopadhyay, A. and Chakraborty, S., 2016. The effect of uniform electric field on the cross-stream migration of a drop in plane Poiseuille flow. Journal of Fluid Mechanics, 809, 726-774.

Mandal, S., Ghosh, U. and Chakraborty, S., 2016. Effect of surfactant on motion and deformation of compound droplets in arbitrary unbounded Stokes flows. Journal of Fluid Mechanics, 803, 200-249.

Mandal, S., Bandopadhyay, A. and Chakraborty, S., 2016. Dielectrophoresis of a surfactant-laden viscous drop. Physics of Fluids, 28(6), 062006.

Mandal, S., Bandopadhyay, A. and Chakraborty, S., 2016. Effect of surface charge convection and shape deformation on the dielectrophoretic motion of a liquid drop. Physical Review E, 93(4), 043127.

Chaudhury, K., Mandal, S. and Chakraborty, S., 2016. Droplet migration characteristics in confined oscillatory microflows. Physical Review E, 93(2), 023106.

Bandopadhyay, A., Mandal, S. and Chakraborty, S., 2016. Streaming potential-modulated capillary filling dynamics of immiscible fluids. Soft Matter, 12(7), 2056-2065.

Bandopadhyay, A., Mandal, S., Kishore, N.K. and Chakraborty, S., 2016. Uniform electric-field induced lateral migration of a sedimenting drop. Journal of Fluid Mechanics, 792, 553-589.

2015

Mandal, S., Bandopadhyay, A. and Chakraborty, S., 2015. Effect of interfacial slip on the cross-stream migration of a drop in an unbounded Poiseuille flow. Physical Review E, 92(2), 023002.

Mandal, S., Ghosh, U., Bandopadhyay, A. and Chakraborty, S., 2015. Electro-osmosis of superimposed fluids in the presence of modulated charged surfaces in narrow confinements. Journal of Fluid Mechanics, 776, 390-429.

2014

Mandal, S., Chaudhury, K. and Chakraborty, S., 2014. Transient dynamics of confined liquid drops in a uniform electric field. Physical Review E, 89(5), 053020.

Conference, Symposium & Workshop Presentations (Oral/Poster)

2025

Roy, R., Chakraborty, P., Mandal, S., 2025. Navigation of smart artificial microswimmers in external flow via reinforcement learning, Mechanical Sciences 3rd Divisional Symposium on Applications of AI/ML in Engineering, IISc, Bengaluru, India.

Mandal, S., 2025. 2D Steady-State Heat Conduction. Refresher Course on Heat and Mass Transfer – Basic and Advanced, IIITD&M, Kancheepuram. 

Mandal, S., 2025. Transient Heat Conduction: Lumped Capacitance Approach. Refresher Course on Heat and Mass Transfer – Basic and Advanced, IIITD&M, Kancheepuram. 

Mandal, S., 2025. Microscale swimming in nematic liquid crystals, International Workshop on Multiscale Multiphysics Systems, IIT Madras, India.

Ramprasad, M., Mandal, S., and Mahapatra, P. S., 2025. Mesoscale simulations of a microswimmer in structured obstacles, International Workshop on Multiscale Multiphysics Systems, IIT Madras, India.

2024

Mandal, S., 2024. Multi-Particle Collision Dynamics: A Particle-Based Mesoscale Simulation Method, CFD in Practice: From Fundamental Research to Recent Industrial Applications, IIT (ISM), Dhanbad, India.

Roy, R., Mandal, S., 2024. Chemically active particles in extensional flow, Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Sontakke, S. S., Guchhait, S., Mandal, S., and Dey, R., 2024. Flow fields around active droplets squeezing through tight confinements, Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Sreekrishna, S., Das, S., and Mandal, S., 2024. Phoretic motion of an isotropic colloid in a Carreau fluid. Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Sarkar, S., Mondal, P. K., and Mandal, S., 2024. Motion of a cylindrical particle in nematic liquid crystals near a plane wall, Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Mukherjee, S., and Mandal, S., 2024. Motion of a chemically active droplet in an external force, Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Mandal, S., 2024. Motion of microswimmers in viscosity gradients near a plane wall, Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Kataky, P. K., Mondal, P. K., and Mandal, S., 2024. Dynamics of a cylindrical Janus swimmer in shear flow near a wall, Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Ramprasad, M., Mandal, S., and Mahapatra, P. S., 2024. Mesoscale simulations of a microswimmer in a porous media, Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Jana, R. and Mandal, S., 2024. Motion of a particle in viscosity gradients near a plane wall,  Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Chakraborty, P., Roy, R., Mandal, S., 2024. Navigation of smart artificial microswimmers in external flow via reinforcement learning, Complex Fluids (CompFlu) 2024, Indian Society of Rheology and IIT Hyderabad, India.

Jadhav, S.N., Mandal, S., and Ghosh, U., 2024. Coupled bulk and interfacial transport of surfactants governs the settling of a drop towards a wall, 26th International Conference of the Theoretical and Applied Mechanics (ICTAM 2024), Daegu, Korea.

Das, S., Sreekrishna, S., and Mandal, S., 2024. Spontaneous motion of isotropic colloids in a Carreau fluid, Chemical Nanomotors – Frontiers and Opportunities, ACS Fall 2024 Global Virtual Symposium.

Guchhait, S., Sontakke, S., Mandal, S., and Dey, R., 2024. Flow fields around active droplets squeezing through tight confinements, Hyderabad Soft Matter Day, TIFR Hyderabad, India.

Sreekrishna, S., Das, S., and Mandal, S., 2024. Phoretic motion of isotropic colloids in a Carreau fluid, Hyderabad Soft Matter Day, TIFR Hyderabad, India.

Roy, R., and Mandal, S., 2024. Chemically active particles in extensional flow, Division of Mechanical Sciences Research Symposium, IISc, Bengaluru, India. 

Mandal, S., 2024. Microscale swimming in nematic liquid crystals, 1st  Mechanical Sciences Young Investigators Meet, IIT Kanpur, India.

Saji, M. and Mandal, S., 2024. Rheotaxis of a microswimmer in plane Poiseuille flow: effect of domain confinement and thermal fluctuations, Workshop on Interfacial Engineering at Multiple Spatio-temporal Scales, IISc, Bengaluru, India.

Jana, R. and Mandal, S., 2024. Motion of passive and active particles near a plane wall in viscosity gradients, Workshop on Interfacial Engineering at Multiple Spatio-temporal Scales, IISc, Bengaluru, India.

Mandal, S., 2024. Microscale swimming in nematic liquid crystals, Workshop on Interfacial Engineering at Multiple Spatio-temporal Scales, IISc, Bengaluru, India. Honored with Young Scientist Speaker Award by Springer.  

Das, S. and Mandal, S., 2024. Spontaneous motion of isotropic active particles in complex media. 2nd International Conference in Mechanical Engineering (INCOM 2024), Jadavpur University, Kolkata, India.

2023

Das, S. and Mandal, S., 2023. Spontaneous motion of isotropic particles in a Carreau fluid. Complex Fluids (CompFlu) 2023, Indian Society of Rheology and IIT Madras, India.  

Mandal, S. and Mukherjee, S., 2023. Dynamics of forced active droplets, 1st Indian Conference on Micro Nano Fluidics (ICOM), IIT Madras, India. 

Kataky, P. K., Mondal, P. K., and Mandal, S., 2023. Hydrodynamics of a Janus swimmer near a plane wall, 1st Indian Conference on Micro Nano Fluidics (ICOM), IIT Madras, India. 

Sarkar, S., Mondal, P. K., and Mandal, S., 2023. Cross-stream migration of a spherical particle in a pressure driven flow of nematic liquid crystal, 1st Indian Conference on Micro Nano Fluidics (ICOM), IIT Madras, India. 

Singh, S., Mondal, P. K., and Mandal, S., 2023. Self-propelled droplet in confinement, 1st Indian Conference on Micro Nano Fluidics (ICOM), IIT Madras, India. Selected for best poster award sponsored by Langmuir.

Ramprasad, M., Mandal, S., and Mahapatra, P. S., 2023. Multiparticle collision dynamics simulations of interacting microswimmers, 1st Indian Conference on Micro Nano Fluidics (ICOM), IIT Madras, India. 

Mukherjee, S., and Mandal, S., 2023. Controlled navigation of a micro-swimmer in micro-confinements subjected to a Poiseuille flow, Division of Mechanical Sciences Research Symposium, IISc, Bengaluru, India. 

Mason, T., Croft, T., Mandal, S., and Mazza, M. G., 2023. Hydrodynamic interactions between active particles in nematics, Motility in Microbes, Molecules and Matter, University of Edinburgh, Edinburgh, UK. 

2022

Mandal, S., 2022. Swimming in Nematic Liquid Crystals, 4th National Conference on Recent Advancement in Physical Sciences (NCRAPS-2022), NIT Uttarakhand, India.

Mandal, S. and Mazza, M. G., 2022. Multiparticle collision dynamics simulations of squirmers in a nematic fluid. APS March Meeting 2022, Chicago, USA. 

2021

Mandal, S. and Mazza, M. G., 2021. Dynamics of a microswimmer in nematic liquid crystal. Complex Fluids (CompFlu) 2021, Indian Society of Rheology and IIT Gandhinagar, India. 

Mandal, S., 2021. Dynamics of a squirmer in confined nematic liquid crystals, SIAM Conference on Mathematical Aspects of Materials Science (MS 21), Bilbao, Spain.

2020

Mandal, S., 2020. Dynamics of a microswimmer in conned nematic liquid crystal. 65th Congress of The Indian Society of Theoretical and Applied Mechanics, Indian Society of Theoretical and Applied Mechanics and Gandhi Institute of Technology and Management, India. Selected for the Young Scientist Award.

Mandal, S. and Mazza, M. G., 2020. Multiparticle collision dynamics simulations of a squirmer in a nematic fluid. Complex Fluids (CompFlu) 2020, Indian Society of Rheology and IIT Bombay, India.

Agrawal, N. K., Mandal, S. and Mahapatra, P. S., 2020. Multiparticle Collision Dynamics Modelling of Slip-Stick Janus Particle. Complex Fluids (CompFlu) 2020, Indian Society of Rheology and IIT Bombay, India.

Mandal, S., Croft, A. C., and Mazza, M. G., 2020. Squirmer dynamics in a conned nematic liquid crystal. International Conference Motile Active Matter, Forschungszentrum caesar, Bonn, Germany.

Mandal, S., 2020. Numerical simulations of microswimmers in nematic liquid crystal. Soft Matter Young Investigators e-Meet 2020, IISc, Bengaluru and IIT Madras, India.

Mandal, S., 2020. Learning Session on COMSOL. TEQIP Short Term Course on Computa- tional Fluid Dynamics for Incompressible Flows, IIT Guwahati, India.

Mandal, S., 2020. Multi-Particle Collision Dynamics: A Particle-Based Mesoscale Simulation Method. TEQIP Short Term Course on Computational Fluid Dynamics for Incom- pressible Flows, IIT Guwahati, India.

2019

Mandal, S. and Mazza, M. G., May 23-24 2019. Multiparticle collision dynamics modeling of nematic liquid crystals. SPP Microswimmers Annual Meeting, Forschungszentrum caesar, Bonn, Germany.

Mandal, S. and Mazza, M. G., 2019. Multiparticle collision dynamics modeling of nematic liquid crystal with variable order parameter. DPG Spring Meeting Regensburg, Germany.

Mandal, S. and Mazza, M. G., 2019. Multiparticle collision dynamics modeling of nematic liquid crystal with variable order parameter. Winter School on Motile Active Matter: Nanomachines, Microswimmers, and Swarms, Juelich, Germany.

2018

Mandal, S. and Mazza, M. G., 2018. Dynamics of a nematic microswimmer in aqueous surfactant solution. SPP Microswimmers Annual Meeting, Forschungszentrum caesar, Bonn, Germany.

Mandal, S. and Mazza, M. G., 2018. Dynamics of a nematic microswimmer in aqueous surfactant solution. DPG Spring Meeting Berlin, Germany.

Poddar, A., Mandal, S., Bandopadhyay, A. and Chakraborty, S., 2018. Surfactant-induced alterations in the elctrohydrodynamics of a sedimenting drop. Proceedings of the 7th International and 45th National Conference on Fluid Mechanics and Fluid Power, IIT Bombay, Mumbai, India.

Das, S., Mandal, S. and Chakraborty, S., 2018. Effect of interfacial viscosity on the motion of a surfactant-laden droplet in an unbounded Poiseuille flow. Proceedings of the 1st International Conference on Mechanical Engineering, Jadavpur University, Kolkata, India.

2017

Mandal, S. and Chakraborty, S., 2017. Electrohydrodynamic manipulation of droplets suspended in a liquid. Indo-German Conference on Modeling, Simulation and Optimization in Applications, Bankura University, West Bengal, India.

2016

Paul, R., Kumar, G. N., Mandal, S., Kishore, N. K., Pramanik, S. and Chakraborty, S., 02016. Experimental investigation on the electrohydrodynamic motion and shape deformation of a sedimenting droplet under uniform alternating electric field. 2016 Electrostatics Joint Conference, Purdue University, West Lafayette, USA.