My research focuses on multiscale fluid flow and heat transfer with the twin objectives to understand the interfacial interactions and flow physics with an aim to utilize the same to develop smart surfaces and for renewable energy generation. A part of the research focuses on length scales below micron dimensions where one has to resort to molecular level investigations. The results are used to propose capillary height dependent dynamic slip length which could explain the filling behavior in nanocapillaries. Related to flow in confinements, the interfacial slip was demonstrated as a complex function of the physical and chemical signature of the solid surface and the ionic inclusions in the solvent together interacting with the solvent molecules. In a pioneering work, the duality of wettability and slip length was challenged and flow optimization on a hydrophobic surface was performed to obtain stick and proposing methods to tune the surface wettability by altering the structure of the solid and the fluid at the interface. This understanding of interfacial phenomena from a multiscale approach gives one the ability to tweak surfaces to make them work according to the desired application.At the device level, research was conducted both theoretically and experimentally, to decipher the interdependence between the structure of electric double layer formation and the structure of the fluid at the interface under dynamic conditions. The analysis provides a road map for optimizing electrokinetic energy conversion efficiency. At the system level, the research focuses on wind energy conversion and harvesting solar thermal energy.
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Molecular self-assembly Enables Tuning of Nanopores in Atomically Thin Graphene Membranes for Highly Selective Transport Jang D., Bakli C. , Chakraborty S. , Karnik R. By Advanced Materials 2108940- (2022)
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Nonlinear Amplification in Electrokinetic Pumping in Nanochannels in the Presence of Hydrophobic Interactions Chakraborty S., Chatterjee D. , Bakli C. By Physical Review Letters 110 184503- (2013)
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Substrate wettability guided oriented self assembly of Janus particles Banik M., Sett S., Bakli C., Raychaudhuri A.K., Chakraborty S., Mukherjee R. By Scientific Reports 11 1182- (2021)
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Upstream events dictate interfacial slip in geometrically converging nanopores Mondal N., Chaudhuri A. , Bakli C. , Chakraborty S. By The Journal of Chemical Physics 16 164709-164709 (2021)
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Mechanistic insights into surface contribution towards heat transfer in a nanofluid Singh A., Lenin R., Bari N.K., Bakli C., Bera C. By Nanoscale Advances 2 3507-3513 (2020)
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Anomalous interplay of slip, shear and wettability in nanoconfined water Bakli C., Chakraborty S. By Nanoscale 11 11254-11261 (2019)
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Mimicking Wettability Alterations using Temperature Gradient for Water Nanodroplets Bakli C., Pd S. , Chakraborty S. By Nanoscale 9 12509-12515 (2017)
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l Separation of Polymers in Nanochannels: Combined Influence of Wettability and Structure. Pd S., Bakli C. , Chakraborty S. By Journal of Polymer Science, Part B: Polymer Physics 54 2118-2125 (2016)
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Rapid capillary filling via ion-water interactions over nanoscale Bakli C., Chakraborty S. By Nanoscale 8 6535- (2016)
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Slippery to Sticky Transition of Hydrophobic Nanochannelsna Bakli C., Chakraborty S. By Nano Letters 15 7497-7502 (2015)
Principal Investigator
- Energy Harvesting using Droplets on Slippery Surfaces
Co-Principal Investigator
- 3D printing of intricate fluid conduits using ceramic particles for fluid flow Shell India Markets Pvt. Ltd.
- Confinement-inducted Dynamics in Nanoscale Phase Transition Apex Committee of SPARC
Ph. D. Students
Abhirup Chaudhuri
Area of Research: Microfluidics and Nanofluidics
Anirban Roy
Area of Research: Multiphase Microfluidics
Aniruddha Guha
Area of Research: Microfluidics and Nanofluidics
Avinash Kumar
Area of Research: Microfluidics and Nanofluidics
Diptesh Biswas
Area of Research: Droplet Dynamics on Surfaces
Ekta Tayal
Area of Research: Multiphase Microfluidics
Giri Bhushan Sharma
Area of Research: Microscale heat Transfer for Photovoltaic Cooling
Kunderu Pallavi
Area of Research: Multiphase Flow
Nilanjan Mondal
Area of Research: Thermal Management of Devices
Patwari Aditya Shivaji
Area of Research: Microfluidics
Rohit Agarwal
Area of Research: Drop Evaporation
Shashi Rastogi
Area of Research: Thermal management of devices
Subradip Debnath
Area of Research: Microfluidics
Subrata Bagdi
Area of Research: Microscale Heat Transfer for Photovoltaic Cooling Applications
Tanmoy Majhi
Area of Research: Solid-liquid interaction on 2D materials
Vikash Chandra
Area of Research: Building Energy
Vinay Arya
Area of Research: Microfluidics and Nanofluidics
