TITLE	COLLABORATORS	SCHEME/AGENCY	Status
Investigation of low global warming potential alternative chemicals to substances controlled under the Montreal Protocol	Dr. Ajay D. Thakur	Project Management Unit, Ozone Cell, Ministry of Environment, Forest and Climate Change	Ongoing: 2023-2028
Decoding the science of boiling via bubble acoustics: Towards preemptive control of vapor explosion in industrial applications	NA	SERB, Swarnajayanti Fellowship	Ongoing: 2022-2027
Permanent Dropwise Condensation via Amphiphilic Additives in Vapor Phase	Dr. Snehashis Daschakraborty, and Prof. Youngsuk Nam	DST, Indo-Korea Bilateral Scheme	Ongoing: 2021-2024
Psychrometry Driven Design and Fabrication of An All-Season Optimal Atmospheric Water Harvester	Dr. Ajay D. Thakur	DST, Water Technology Initiative	Ongoing: 2020-2023
Passive Two-Phase Heat Spreader for Hotspot Mitigation in Microgravity of Space	NA	ISRO, Human Space Flight Center	Ongoing: 2020-2024
Development of an Ionic Liquid-based Ultra-High Heat Dissipation Module for Energy Efficient Boiling Systems	NA	SERB, Core Research Grant	Completed: 2020-2023
Development of an agricultural waste based off-the-grid climate control unit for storage and processing of agricultural produce	Dr. Ajay D. Thakur and, New Leaf Dynamic Technologies	SERB, IMPRINT-IIA	Completed: 2019-2023
Surface Active Additives for Enhanced Flow Boiling in Microchannels	Dr. Dimtry Zaitsev	DST, Indo-Russia Bilateral Scheme	Completed: 2019-2021
Acoustic Detection of Leidenfrost Dynamics on Scalable Micro-/Nanostructured Surfaces	NA	DST, Nanomission	Completed: 2016-2019
Design and Development of an Agricultural Waste Based Gasifier Heating System for GreenCHILL^TM	Dr. Ajay D. Thakur and, New Leaf Dynamic Technologies	DST and MHRD, Uchhatar Avishkar Yojayan (UAY)	Completed: 2019-2023
Enhancement of Boiling Heat Transfer via the Suppression of Coalescence in Microgravity	NA	ISRO, RESPOND	Completed: 2015-2018
Flow Boiling Heat Transfer in Scalable Nanostructured Microchannels for High Heat Flux Applications	Prof. Sandip Saha	SERB	Completed: 2014-2018

Publications

Archival Journals
Conference Publications and Presentations
Patents
Book Chapters
Invited Talks

Archival Journal Publications

Upadhyay, A., Kumar, B., Kumar, N., and Raj, R., 2023,“ Simultaneous Enhancement of Critical Heat Flux and Heat Transfer Coefficient via In-Situ Deposition of Ionic Liquids during Pool Boiling,” International Journal of Heat and Mass Transfer, 208, pp. 124066.

Hedau, G., Qadeer, Md., Gulhane, N. P., Raj, R., and Saha, S. K., 2023,“On the Importance of Fluidic Manifold Design and Orientation on Flow Boiling Instability in Microchannel Heat Sinks,” International Journal of Heat and Mass Transfer, 209, pp. 124120.

Chaitanya B., Gunjan, M. R., Sarangi, R. N., Raj, R., and Thakur, A. D., 2022,“Per-fluorinated Chemical Free Robust SuperhydrophobicCopper Surface Using a Scalable Technique,” Materials Chemistry and Physics, 278, pp. 125677.

Hedau, G., Raj, R., and Saha, S. K., 2022,“Complete suppression of flow boing instability in microchannel heat sinks using a combination of inlet restrictor and flexible dampener,” International Journal of Heat and Mass Transfer, 182, pp. 121937.

Gunjan, M. R., Kumar, A., and Raj, R., 2021,“Cloaked Droplets on Lubricant-Infused Surfaces: Union of Constant Mean Curvature Interfaces Dictated by Thin-Film Tension,” Langmuir, 37 (22), pp. 6601-6612.

Sinha, K. N. R.; Kumar, V.; Kumar, N.; Thalur, A., and Raj, R., 2021,“Deep learning the sound of boiling for advance prediction of boiling crisis,” Cell Reports Physical Science, 2 (3), pp. 100382.

Verma, A., Kumar, N., and Raj, R., 2021,“Direct prediction of foamability of aqueous surfactant solutions using property values,” Journal of Molecular Liquids, 323, pp. 114635:1-10.

Hedau, G., Raj, R., and Saha, S. K., 2021,“Effect of Outlet Plenum Design on Flow Boiling Heat Transfer in Microchannel Heat Sinks,” Thermal Science and Engineering Progress, 23, pp. 100868.

Kumar, A., Gunjan, M. R., and Raj, R., 2020,“On the Validity of Force Balance Models for Predicting Gravity-Induced Detachment of Pendant Drops and Bubbles,” Physics of Fluids, 32 (10), pp. 101703-1-5.

Kumar, V., Sinha, K. N. R., and Raj, R., 2020, “Leidenfrost Phenomenon during Quenching in Aqueous Solutions: Effect of Evaporation-Induced Concentration Gradients,” Soft Matter, 16, pp. 6145-6154.

Rahman, O.S., A., Mukherjee, B., Priyadershini, S., Gunjan, M. R., Raj, R., Aruna, S. T., and Kehsri, A. K., 2020,“Investigating the Wetting Phenomena and Fabrication of Sticky, Para-hydrophobic Cerium Oxide Coating,” Journal of the European Ceramic Society, 40, pp. 5749-5757.

Hedau, G., Dey, P., Raj, R., and Saha, S. K., 2020,“Experimental and Numerical Investigation of the Effect of Number of Parallel Microchannels on Flow Boiling Heat Transfer,” International Journal of Heat and Mass Transfer, 158, pp. 119973.

Sinha, K. N. R., Ranjan, D., Kumar, N., Raza, M. Q., and Raj, R., 2020, “Simultaneous Audio-Visual-Thermal Characterization of Transition Boiling Regime,” Experimental Thermal and Fluid Science, 118, pp. 110162.

Sarode, A., Raj, R., and Bhargav, A., 2020, “On the Role of Confinement Plate Wettability on Pool Boiling Heat Transfer,” International Journal of Heat and Mass Transfer, 156, pp. 119723.

Gunjan, M. R., Kumar, A., and Raj, R., 2020, “Droplets on Lubricant-Infused Surfaces: Combination of Constant Mean Curvature Interfaces with Neumann Triangle Boundary Conditions,” Langmuir, , 36 (11), pp.2974-2983.

Kumar, N., Sinha, K. N. R., Raza, M. Q., Verma, A., Seth, D., Jasvanth, V. S., and Raj, R., 2020,“ Design, Fabrication, and Performance Evaluation of a Novel Orientation Independent and Wickless Heat Spreader,” International Journal of Heat and Mass Transfer, 153, pp. 119572.

Kumar, A., Gunjan, M. R., Jakhar, K., Thakur, A., and Raj, R.,, 2020,“Unified Framework for Mapping Shape and Stability of Pendant Drops Including the Effect of Contact Angle Hysteresis,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, 597, pp. 124619

Hedau, G., Dey, P., Raj, R.,, and Saha, S. K., 2020,“Combined Effect of Inlet Restrictor and Nanostructure on Two-Phase Flow Performance of Parallel Microchannel Heat Sinks,” International Journal of Thermal Sciences, 153, pp. 106339.

Ghosh, D. P., Sharma, D., Kumar, A., Saha, S. K., and Raj, R. 2020, “An Ingenious Fluidic Capacitor for Complete Suppression of Thermal Fluctuations in Two-Phase Microchannel Heat Sinks,” International Communications in Heat and Mass Transfer 110, pp. 104347.

Sachi, S., Zaitsev, D. V., and Raj, R., 2020, “Effect of Confinement and Heater Surface Inclination on Pool Boiling Performance of Patterned Wettability Surfaces,” Journal of Physics: Conference Series 1677, pp. 012093.

Sarode, A., Raj, R., and Bhargav, A., 2020, “Effect of Confinement and Heater Surface Inclination on Pool Boiling Performance of Patterned Wettability Surfaces,” Journal of Enhanced Heat Transfer 27 (8), pp. 711-727.

Kumar, N., Raza, M. Q., Sinha, K. N. R., Seth, D., and Raj, R.,, 2020,“ Amphiphilic Additives to Enhance Pool Boiling Heat Transfer in Confined Spaces,” Journal of Enhanced Heat Transfer, 27 (6), pp. 545-560.

Sarode, A., Raj, R., and Bhargav, A., 2020, “Scalable macroscale wettability patterns for pool boiling heat transfer enhancement,” Heat and Mass Transfer 56, pp. 989-2020.

Sunil, Sinha, R., Chaitanya, B., Rajan, B. K., Agarwal, A., Thakur, A. D., and Raj, R., 2019, ““Design, Fabrication, and Performance Evaluation of a Novel Biomass-Gasification-Based Hot Water Generation System,” Energy, 185, pp. 148-157.

Raza, M. Q., Kumar, N., and Raj, R., 2019, “Effect of Foamability on Pool Boiling Critical Heat Flux with Nanofluids,” Soft Matter, 15, pp. 5308-5318.

Kumar, N., Raza, M. Q., Seth, D., and Raj, R., 2019,“ .Surface-Active Ionic Liquids as Potential Additive for Pool Boiling Based Energy Systems,” Journal of Molecular Liquids, 287, pp. 110953-1-12/

Sinha, K. N. R., Ranjan, D., Raza, M. Q., Kumar, N., Kaner, S., Thakur, A., and Raj, R., 2019, “In-situ acoustic detection of critical heat flux for controlling thermal runaway in boiling systems,” International Journal of Heat and Mass Transfer, 138, pp. 135-149

Raza, M. Q., Kumar, N., and Raj, R., 2019,“Experimental Characterization and Modeling of Critical Heat Flux with Subcooled Foaming Solution,” International Journal of Thermal Sciences, 141, pp. 199-210/

Sharma, D., Ghosh, D. P., Saha, S. K., and Raj, R., 2019, “Thermohydraulic Characterization of Flow Boiling in Nanostructured Microchannel Heat Sink with Vapor Venting Manifold,” International Journal of Heat and Mass Transfer, 130, pp. 1249-1259.

Ghosh, D. P., Sharma, D., Mohanty, D., Saha, S. K., and Raj, R., 2019 “Facile Fabrication of Nanostructured Microchannels for Flow Boiling Heat Transfer Enhancement,” Heat Transfer Engineering, 40 (7), pp. 537-548.

Jakhar, K., Chattopadhyay, A., Thakur, A., and Raj, R.,, 2019,Spline-based Interface Modeling and Optimization (SIMO) for Surface Tension and Contact Angle Measurements,” arXiv, 1909.05943.

Chaitanya, B., Bahadur, V., Thakur, A. D.,and Raj, R., 2018, “Biomass-gasification-based atmospheric water harvesting in India,” Energy, 165, pp. 610-621.

Kumar, N., Raza, M. Q., Seth, D., and Raj, R., 2018, “ Surfactant Aided Bubble Departure during Pool Boiling,” International Journal of Thermal Sciences, 131, pp. 105-113.

Raza, M. Q., Kumar, N., and Raj, R., 2018, “ Wettability-Independent Critical heat Flux during Boiling Crisis in Foaming Solutions,” International Journal of Heat and Mass Transfer, 126 (A), pp. 567-579.

Kumar, N., Raza, M. Q., Seth, D., and Raj, R., 2018, “Aqueous Ionic Liquid Solutions for Boiling Heat Transfer Enhancement in the Absence of Buoyancy Induced Bubble Departure,” International Journal of Heat and Mass Transfer, 122, pp. 354-363

Adera, S., Antao, D. S., Raj, R., and Wang, E. N., 2018, “ Hotspot Thermal Management via Thin-Film Evaporation – Part II: Modeling,” IEEE Transactions on Components, Packaging and Manufacturing Technology, 8 (1), pp. 99-112.

Adera, S., Antao, D. S., Raj, R., and Wang, E. N., 2018, “Hotspot Thermal Management via Thin-Film Evaporation – Part I: Experimental Characterization,” IEEE Transactions on Components, Packaging and Manufacturing Technology. 8 (1), pp. 88-98

Gunjan, M. R., and Raj, R., 2017, “ Dynamic Roughness Ratio Based Framework for Modeling Mixed Mode of Droplet Evaporation,” Langmuir, 33 (28), pp. 7191-7201.

Jakhar, K., Chattopadhyay, A., Thakur, A., and Raj, R., 2017, “ Spline Based Shape Prediction and Analysis of Uniformly Rotating Sessile and Pendant Droplets,” Langmuir, 33 (22), pp. 5603-5612.

Kumar, A., and Raj, R., 2017, “ Droplets on Microdecorated Surfaces: Evolution of the Polygonal Contact Line,” Langmuir, 33 (19), pp. 4854–4862.

Adera, S., Antao, D. S., Raj, R., and Wang, E. N., 2016, “Design of Micropillar Wicks for Thin-Film Evaporation,” International Journal of Heat and Mass Transfer, 101, pp. 280-294.

Raza, M. Q., Kumar, N., and Raj, R., 2016, “Surfactants for Bubble Removal against Buoyancy,” Scientific Reports, 6, 19113.

Antao, D. S., Adera, S., Farias, E., Raj, R., and Wang, E. N., 2016, “Visualization of Evaporating Liquid-Vapor Interface in Micropillar Arrays,” Journal of Heat Transfer – Transactions of ASME,138(2), 020910.

Antao, D. S., Adera, S., Zhu, Y., Farias, E., Raj, R., and Wang, E. N., 2016, “Dynamic Evolution of the Evaporating Liquid-Vapor Interface in Micropillar Arrays,” Langmuir, 32 (2), pp. 519-526.

Prior to 2015

Raj, R., Adera, S., Enright, R., and Wang, E. N., 2014, “High Resolution Liquid Patterns via Three-Dimensional Droplet Shape Control,” Nature Communications,5,4975.

Humplik, T., Raj, R., Maroo, S. C., Laoui, T., and Wang, E. N., 2014, “Effect of Hydrophilic Defects on Water Transport in MFI Zeolites,” Langmuir, 30 (22), pp. 6446-6453.

Raj, R., Adera, S., Enright, R., and Wang, E. N., 2014, “Polygonal Droplets on Microstructured Surfaces,” Journal of Heat Transfer – Transactions of ASME, 136 (8), 080906.

Humplik, T., Raj, R., Maroo, S. C., Laoui, T., and Wang, E. N., 2014, “Framework Water Capacity and Infiltration Pressure of MFI Zeolites,” Microporous and Mesoporous Materials, 190, pp. 84-91.

Adera, S., Raj, R., Enright, R., and Wang, E. N., 2013, “Non-Wetting Droplets on Hot Superhydrophilic Surface,” Nature Communications, 4, 2518.

Raj, R., Maroo, S. C., and Wang, E. N., 2013, “Wettability of Graphene,” Nano Letters, 13 (4), pp. 1509-1515.

Raj, R., Enright, R., Zhu, Y., Adera, S., and Wang, E. N., 2012, “Unified Model for Contact Angle Hysteresis on Heterogenous and Superhydrophobic Surfaces” Langmuir, 28 (45), pp. 15777-15788. [Download]

Raj, R., Kim, J., and McQuillen, J., 2012, “Pool Boiling Heat Transfer on the International Space Station: Experimental Results and Model Verification,” Journal of Heat Transfer – Transactions of ASME, 134(10), 101504-1 – 101504-14.

Kim, J., Raj, R., and McQuillen, J., 2012, “Gravity Scaling of Pool Boiling Heat Transfer,” Journal of the Japan Society of Microgravity Application, 29 (2), pp. 92-98. – Invited Paper.

Raj, R., Kunkelmann, C., Stephan, P., Plawsky, P., and Kim, J., 2012, “Contact Line Behavior for Highly Wetting Fluid under Superheated Conditions,”International Journal of Heat and Mass Transfer, 55 (9-10), pp. 2664-2675.

Raj, R., Kim, J., and McQuillen, J., 2012, “ On the Scaling of Pool Boiling Heat Flux with Gravity and Heater Size,” Journal of Heat Transfer – Transactions of ASME, 134 (1), pp. 011502-1 – 011502-13.

Di Marco, P., Raj, R., and Kim, J., 2011, “Boiling in Variable Gravity under the Action of Electric Field: Results of Parabolic Flight Experiments,”Journal of Physics: Conf. Ser., 327, 012039.

Raj, R., Kim, J., and McQuillen, J., 2010, “Gravity Scaling Parameter for Pool Boiling Heat Transfer,” Journal of Heat Transfer -Transactions of ASME, 132 (9), pp. 091502-1 -091502-9.

Raj, R., and Kim, J., 2010, “Heater Size and Gravity Based Pool Boiling Regime Map: Transition Criteria between Buoyancy and Surface Tension Dominated Boiling,” Journal of Heat Transfer – Transactions of ASME, 132 (9), pp. 091503-1 – 091503-10.

Raj, R., Kim, J., and McQuillen, J., 2009, “Subcooled Pool Boiling in Variable Gravity Environments,” Journal of Heat Transfer – Transactions of ASME, 131, pp. 091502-1 – 091502-10.

Raj, R., and Kim, J., 2008, “Thermocapillary Convection during Subcooled Boiling in Reduced Gravity Environments,” Annals of the New York Academy of Sciences, 1161, pp. 173-181.

Parida, P. R., Raj, R., Prasad, A., and Mishra, S. C., 2007, “Solidification of a Semitransparent Planar Layer Subjected to Radiative and Convective Cooling,” Journal of Quantitative Spectroscopy & Radiative Transfer, 107, pp. 226-235.

Raj, R., Prasad, A., Parida, P. R., and Mishra, S. C., 2006, “Analysis of Solidification of a Semitransparent Planar Layer using the Lattice Boltzmann Method and the Discrete Transfer Method,” Numerical Heat Transfer Part A, 49, pp. 1-21.

Conferences Publications and Presentations

Curriculam Vitae

Patents

GRANTED

Sunil, Raj, R., Thakur, A. D., Rajan, B. K., Chaitanya, B., Sinha, R., Agarwal, A., and Agarwal, A., “System and Method for Heat Recovery in Gasification Process,” Indian Patent Number 390902, Issue Date: 01/03/2022, Application no. 201831011600, Priority Date 28/03/2018.

Raza, M. Q., and Raj, R., “Surfactant Based Boiling System for Zero Gravity,” Indian Patent Number 314531, Application no. 208/KOL/2015, Priority Date 26/02/2015.

Xiao, R., Raj, R., Narayanan, S., Wang, E. N., Enright, R., and Maroo, S. C., “Evaporative Heat Transfer System,” U.S. Patent No. 9,835,363, Issue Date. December 5, 2017. [Link]

FILED

Shukla, A., Sunil, , Raj, R., Thakur, A. D., “System and Method for Extracting Atmospheric Moisture,” Application filed with the Indian Patent Office, Serial Number 202331035489, Date 22/05/2023.

Sunil, , Raj, R., Thakur, A. D., Agarwal, A., and Agarwal, A., “System and Method for Off-The-Grid Climate Control,” Application filed with the Indian Patent Office, Serial Number 202231026031, Date 04/05/2022.

Sharma, D., Kumar, A., Ghosh, D. P., Raj, R., and Saha, S. K., "An Improved Heat Sink System for Suppressing Two-Phase Thermal and Flow Instabilities and a Method Thereof," Application filed with the Indian Patent Office, Serial Number 201931001796, Application no. TEMP/E-1/1873/2019-KOL, Date 15/01/2019.

Raj, R., Thakur, A., Banerjee, S., and Pandey, U., “A System and Method for Controlling Buoyancy of an Underwater Submersible,” Application filed with the Indian Patent Office, Serial Number 201831028588, Application no. E-12/31190/2018-KOL, Date 30/07/2018.

Book Chapters

Chaitanya, B., Thakur, A. D., and Raj, R., 2020, “Biomass Gasifier-Powered Adsorption Chiller for Atmospheric Water Harvesting: Prospects in Developing World,” Advances in Energy Research – , Springer, pp. 451-460. ISBN 978-981-15-2666-4. [Link]

Ghosh, D. P., Raj, R., Mohanty, D., Saha, S. K., 2016, “Onset of Nucleate Boiling, Void Fraction, and Liquid Film Thickness,” Microchannel Phase Change Transport Phenomena, Elsevier, pp. 5-90. [Link]

Chattopadhyay, A., Thakur, A., and Raj, R., 2016, “Spline Based Modeling of Two-Dimensional Droplets on Rough and Heterogeneous Surfaces,” Fluid Mechanics and Fluid Power – Contemporary Research, Springer, ISBN 978-81-322-2741-0. [Link]

Invited Talks

Acoustic Characterization of Bubbles for In-situ Prediction and Control of Boiling Heat Transfer Regimes, Department of Mechanical Engineering, IIT Gandhinagar, January 6, 2023.

Decoding the Sound of Boiling for Advance Prediction of Boiling Crisis, 1st International Conference in Fluid, Thermal, and Energy Systems (ICFTE22), NIT Calicut, June 9, 2022, Keynote Address.

Acoustic Prediction and Control of Boiling Heat Transfer Regimes, Thermal Transport Café, May 19, 2022.

Decoding the Sound of Boiling for Advance Prediction of Boiling Crisis, Department of Mechanical Engineering, IIT Ropar, February 3, 2022.

Droplet on Lubricant Infused Surfaces: Union of Constant Mean Curvature Surfaces, 48th National Conference on Fluid Mechanics and Fluid Power (FMFP 2021), Birla Institute of Science and Technology Pilani, Rajasthan, India, 27-29 December, 2021, Keynote Address.

Boiling Based Thermal Management Strategies for Earth and Reduced Gravity Applications, FLUTE – 2021, International Symposium on Fluids and Thermal Engineering, Amity University, 22nd July, 2021, Keynote Address.

Boiling Heat Transfer with Foaming Solutions for Terrestrial and Microgravity Applications, Faculty Development Programme (FDP) on "Advanced Engineered Surfaces for Phase Change Heat Transfer Application", Department of Chemical Engineering, NIT Calicut, India, July 13, 2021.

Bubble Dynamics during Boiling with Foaming Solutions: Implications on Earth and Microgravity Heat Transfer, Department of Mechanical and Materials Engineering, University of Cincinnati (online), USA, January 22, 2021.

Enhancement of Boiling Heat Transfer via the Suppression of Coalescence in Microgravity, ISRO Academia Day 2021, January 7, 2021.

Novel Insights on Fluidic Interfaces in Thermal Applications, Bubble Dynamics during Boiling with Foaming Solutions, ScienceConnect: Langmuir, The ACS Journal of Fundamental Interface Science, 10-12 October, 2020.

Boiling Heat Transfer in Earth and Space, TEQIP-3 Webinar, Bhagalpur College of Engineering, Gaya, Bihar, India, September 25, 2020.

Boiling Heat Transfer in Earth and Space, TEQIP-3 Webinar, Gaya College of Engineering, Gaya, Bihar, India, August 4, 2020.

Bubble Dynamics during Boiling with Foaming Solutions, Two Day International Workshop on Interfacial Flow and Heat Transfer in Droplets and Liquid Films for Advanced Thermal Management, Indian Institute of Technology, Bombay, India, March 6-7, 2020.

Boiling with Foaming Solutions for Earth and Microgravity Applications, 25th National and 3rd International ISHMT-ASTFE Heat and Mass Transfer Conference, IIT Roorkee, India, December 28-31, 2019, Keynote Address.

Passive Heat Spreader for Hotspot Mitigation, Structured Training Programme (STP) on 'GenNext Spacecraft Systems & Technologies', URSC, ISRO, December 16-20, 2019.

Workshop on Research Projects and Publications, Keynote Address, Amity University, Ranchi, Jharkhand, July 2019.

Energizing the Waste: Biomass Based Gasifier Heating System for Energy and Environment Applications, TEQIP-III Sponsored Faculty Development Programme, Bhagalpur College of Engineering, Bihar, May 2019.

Development of Two-Phase heat Sinks for Earth and Microgravity Thermal Management Applications, Department of Mechanical Engineering, Indian Institute of Science, Bangalore, April 5, 2019.

Agricultural Waste Based Gasifier Heating System for Various Energy and Environment Applications, TEQIP III, National Institute of Technology Patna, December 19, 2018.

Two-Phase Heat Spreader for Hotspot Mitigation in Reduced Gravity Applications, INAE Annual Convention, RCI Hyderabad, December 13-15, 2018.

Pool Boiling Critical Heat Flux Enhancement Strategies on Earth and in reduced Gravity of Space, Indian Institute of Technology Gandhinagar, September 8, 2017.

Vapor Crowding-based Limit to Pool Boiling Critical Heat Flux, ASME 2017 International Conference on Nanochannels, Microchannels and Minichannels, Hyatt Regency, Cambridge, MA, August 27-30, 2017, Keynote Address.

Vapor Crowding based Hydrodynamic Limit to Critical Heat Flux during Pool Boiling with Nanofluids and Aqueous Surfactant Solutions, Department of Mechanical Engineering, University of Maryland, College Park, MD, USA, August 25, 2017.

Critical Heat Flux Mechanism during Boiling with Surfactants, 6th International and 43rd National Conference on Fluid Mechanics and Fluid Power, MNNITA, Allahabad, U.P., India, December 2016.

Boiling Heat Transfer: Introduction to Applications, Workshop on Boiling Heat Transfer, BCE Bhagalpur, Bihar, December 2016.

Nanotechnology for Two Phase Flow and Heat Transfer Enhancement, TEQIP-II Sponsored Two Day's National Workshop on Advances in Two-Phase Flow and Heat Transfer, NIT Agartala, Tripura, March 2016.

Nanotechnology for Energy Efficient Thermal Management, TEQIP-II Sponsored Faculty Development Programme, College of Engineering, Adoor, Kerela, December 2015.

Surfactants for Bubble Removal against Buoyancy, ISRO Satellite Centre, Bangalore, December 2015.

SEISMECH 2015, The Annual Technical Symposium, Department of Mechanical Engineering, IIT Guwahati, March 2015.

Role of Wettability on Micro and Nano-structured Surfaces for Enhanced Phase Change Heat Transfer, International Workshop on Thermal Design and Management in Electronics, Bangalore, December 2013.

Microheater Array Boiling Experiment (MABE) on the International Space Station, ISRO Satellite Centre, Bangalore, December 2013.

Thermo-Fluidic Transport Processes Near the Three-Phase Contact Line, Recent Advances in Micro/Nanoscale Heat Transfer and Applications in Clean Energy Technologies, IIT Ropar, December, 2013.

Thermo-Fluidic Transport Processes near the Microscopic Contact Line, International Symposium on Micro/Nanoscale Heat Transfer & its Applications, PESIT Bangalore, December 2013.

Surface Heterogeneity Effects on the Wettability of Graphene, Department of Mechanical Engineering, Syracuse University, March 2013.

Multiscale Transport Phenomena for Space and Energy Applications, Department of Mechanical Engineering, Indian Institute of Technology, Bombay, September 2012.