GITAM Hyderabad, India                                                                                                                                       07/2024 – 10/2025

Assistant Professor

• Teaching: UG and PG courses

• Supervision: UG project (2025) title -

 INNOVATIVE APPROACHES TO IMAGE DETECTION IN UNDERWATER DRONES USING DEEP LEARNING

• Administrative activities: ISO auditor, member and coordinator of several department and institute level committees.

Aalto University, Espoo, Finland                                                                                                                           02/2022 – 06/2024

Post-Doctoral Researcher

• Principal contributor in the Academy of Finland (AoF) project to investigate the charge transport of surfactant mediated non-polar media.

• Simultaneous collaboration with intra and inter departmental researchers.
• Co-supervision: 1 MSCA doctoral student.
• Support the procurement processes of the group.

Indian Institute of Science, Bengaluru, India                                                                                                       02/2020 – 11/2021

Post-Doctoral Research Fellow

• Investigated modified dissolution dynamics by managing a vertical confinement over a sessile drop.
• Tailor making evaporation rates of colloidal liquid bridges leads to diverse precipitate patterns.
• Developed a method to regulate the crystallization site via vapor mediated interaction.
• Contributed to preparation of project proposals to seek external grants (~ $200k).
• Experience in supporting doctoral students, project staffs and collaboration with intra/interdepartmental research teams.

Thermal and Fluids

Fellowships:

• Postdoctoral fellowship to pursue research at Aalto University, Finland in Academy of Finland (AoF) project, Feb 2022 – June 2024.
• Director Fellowship (based on academic excellence during PhD), IIT Ropar, Sep 2019 – Jan 2020.
• DAAD Fellowship - IIT Master Sandwich Program, 2012.

J15. Purbarun Dhar, Ankur Chattopadhay, Deepak K Agarwal “Morphing evaporative heat and mass transport of nanofluid droplets by electric field ”, Experimental Thermal and Fluid Science, 163, 111399 (2025).

J14. Moutushi D. Choudhury, Tapati Dutta, Ankur Chattopadhay, “Pattern formation on hydrophobic PDMS substrates by evaporating droplets: combined effect of substrate stiffness, relative humidity and particle size”, Physica Scripta, 99, 095969 (2024).

J13. Ankur Chattopadhyay, Srinivas Rao S, Omkar Hegde, Saptarshi Basu, “Malleable patterns from the evaporation of colloidal liquid bridge: coffee ring to the scallop shell”, Langmuir, 38, 5590-5602 (2022).

J12. Sreeparna Majee, Atish Roy Chowdhury, Roven Pinto, Ankur Chattopadhyay, Amey Nitin Agharkar, Dipshikha Chakravortty, Saptarshi Basu, “Spatiotemporal evaporating droplet dynamics on fomites enhances long term bacterial pathogenesis”, Communications Biology 4: 1173 (2021).

J11. Purbarun Dhar, Vimal Saini, Ankur Chattopadhyay, and Devranjan Samanta “Electro-viscoelasticity of agarose based electrorheological fluids”, Physics of Fluids, 33, 013101 (2021).

J10. Saptarshi Basu, D. Chaitanya Kumar Rao, Ankur Chattopadhyay, and Joita Chakraborty. "Dissolution dynamics of a vertically confined sessile droplet", Physical Review E, 103, 013101 (2021).

J9. Omkar Hegde, Ankur Chattopadhyay, and Saptarshi Basu “Universal spatio-topological control of crystallization in sessile droplets using non-intrusive vapor mediation.”, Physics of Fluids, 33, 012101 (2021).

J8. Ankur Chattopadhyay, Raghvendra Dwivedi, A R Harikrishnan, and Purbarun Dhar. “Ferro-advection aided evaporation kinetics of ferrofluid droplets in magnetic field ambience”, Physics of Fluids 32, 082001 (2020).

J7. Ankur Chattopadhyay, Subhajyoti Samanta, Rajendra Srivastava, Rajib Mondal, and Purbarun Dhar. "Elemental substitution tuned magneto elastoviscous behavior of nanoscale ferrite MFe₂O₄ (M = Mn, Fe, Co, Ni) based complex fluids." Journal of Magnetism and Magnetic Materials 491 (2019), 165622.

J6. Purbarun Dhar, Ankur Chattopadhyay, Lakshmi Sirisha Maganti, and Anilakkad Raman Harikrishnan. “Streamer evolution arrest governed amplified AC breakdown strength of graphene and CNT colloids.” European Physical Journal Applied Physics 85, no. 3 (2019): 30402.

J5. Ankur Chattopadhyay and Purbarun Dhar."Dielectric relaxation behaviors and dissipation characteristics of colloidal nanocarbon (graphene and CNTs) complex fluids." Journal of Applied Physics 125, no. 3 (2019): 034103.

J4. Ankur Chattopadhyay and Purbarun Dhar. "Deterministic role of frequency, amplitude and concentration regimes on the complex dielectric relaxation of colloidal complex fluids." Colloids and Surfaces A: Physicochemical and Engineering Aspects 555 (2018): 304-313.

J3. Ankur Chattopadhyay, Poonam Rani, Rajendra Srivastava, and Purbarun Dhar. "Electro-elastoviscous response of polyaniline functionalized nano-porous zeolite based colloidal dispersions", Journal of Colloid and Interface Science 519 (2018): 242-254.

J2. Ankur Chattopadhyay and Arvind Pattamatta. "A comparative study of submicron phonon transport using the Boltzmann transport equation and the lattice Boltzmann method", Numerical Heat Transfer, Part B: Fundamentals 66, no. 4 (2014): 360-379.

J1. Ankur Chattopadhyay and Arvind Pattamatta., "Energy transport across submicron porous structures: a lattice Boltzmann study", International Journal of Heat and Mass Transfer 72 (2014): 479-488.

Institute Seed grant, BIT Mesra, Amount – 500000, Role – PI. 

Ankur Chattopadhyay and Purbarun Dhar. "A nano-colloidal liquid dielectric medium" (Indian Patent number – 440739)