Publications

Papers & Talks

Endorsement

“Omkar’s previous work opened up new paradigms of droplet manipulation using vapor mediation.”

Prof. Suman Chakraborty
IIT Kharagpur · external examiner of my PhD thesis · read the full letter
Recommendation letter from Prof. Suman Chakraborty, IIT Kharagpur
Editorial Service
2026
Scientific Editor, Bioresource Technology Reports (Elsevier)
Handling editor for submissions in soft matter, colloid and interface science, microfluidics, and materials characterisation
Bioresource Technology Reports · appointed August 2026
Journal
Journal Articles
1
Competition between self-assembly and phase separation governs high-temperature condensation of a DNA liquid
O. Hegde, T. Li, A. Sharma, M. Borja, W. M. Jacobs, W. B. Rogers
Physical Review Letters · 132, 208401 · 2024
DOI arXiv
2
Physics of self-assembly and morpho-topological changes of Klebsiella pneumoniae in desiccating sessile droplets
A. Rasheed, O. Hegde, R. Chatterjee, S. R. Sampathirao, D. Chakravortty, S. Basu
Journal of Colloid and Interface Science · 629(B), 620–631 · 2023
DOI bioRxiv
3
Malleable patterns from the evaporation of a colloidal liquid bridge: coffee ring to the scallop shell
A. Chattopadhyay, S. R. Sampathirao, O. Hegde, S. Basu
Langmuir · 38(18), 5590–5602 · 2022
DOI arXiv
4
Multiscale vapor-mediated dendritic pattern formation and bacterial aggregation in complex respiratory biofluid droplets
O. Hegde, R. Chatterjee, A. Rasheed, D. Chakravortty, S. Basu
Journal of Colloid and Interface Science · 606(2), 2011–2023 · 2022
DOI bioRxiv
5
Spatio-temporal modulation of self-assembled central aggregates of buoyant colloids in sessile droplets using vapor mediated interactions
O. Hegde, S. Basu
Journal of Colloid and Interface Science · 598, 136–146 · 2021
DOI PubMed
6
Universal spatio-topological control of crystallization in sessile droplets using non-intrusive vapor mediation
O. Hegde, A. Chattopadhyay, S. Basu
Physics of Fluids · 33(1), 012101 · 2021
DOI ResearchGate
7
Enhancement of mixing in a viscous, non-volatile droplet using a contact-free vapor-mediated interaction
O. Hegde, P. Kabi, S. Basu
Physical Chemistry Chemical Physics · 22(26), 14570–14578 · 2020
DOI ResearchGate
8
Controlling self-assembly and buckling in nanofluid droplets through vapour mediated interaction of adjacent droplets
O. Hegde, P. Kabi, S. Agarwal, S. Basu
Journal of Colloid and Interface Science · 541, 348–355 · 2019
DOI ResearchGate
9
Vapor mediated control of microscale flow in sessile droplets
O. Hegde, S. Chakraborty, P. Kabi, S. Basu
Physics of Fluids · 30(12), 122103 · 2018
DOI ResearchGate
Book Chapter
10
Convolution neural networks for point-of-care diagnostics of bacterial infections in blood
O. Hegde, R. Chatterjee, D. Roy, V. Jaiswal, S. Jain, D. Chakravortty, S. Basu
Recent Developments in Power and Propulsion Applications, Springer · pp. 909–923 · 2025
DOI medRxiv
Preprint
11
Rapid and reusable high-throughput microfluidics through modular assembly
L. T. P. Le, O. Hegde, W. H. Wu, A. Ejaz, A. Dwivedy, X. Wang, M. Son
bioRxiv · 2026
Preprint
Oral Presentations
Re-entrant condensation of DNA due to competition between self-assembly and phase separation
APS March Meeting · 2023
New England Complex Fluids Workshop
Brandeis University · 2022, 2023
Self-assembly and morpho-topological changes of Klebsiella pneumoniae in drying droplets
APS Division of Fluid Dynamics · 2022
Spatio-topological regulation of multiscale dendritic patterns in respiratory droplets
DROPLETS 2021, TU Darmstadt
Dispersing microparticle agglomerates through vapor mediated Marangoni flow
Virtual ACS Spring Meeting · 2021
Enhancement of microscale flows in droplets through vapor mediated interactions
Fluids Day, ICTS · 2020
Mixing of dye in micro-liter sessile glycerol droplets via vapor mediated interactions
APS Division of Fluid Dynamics · 2019
Poster Presentations
Self-assembly and disassembly in evaporating functional droplets: make it or break it
Nano Ge Spring Meeting · 2021
Vapor mediated control of self-assembly in droplets
DROPLETS 2019, Durham University
Enhancement of mixing in microliter sessile droplets through vapor mediated interactions
COMPFLU 2018  ·  Best Poster Award
Theses
PhD
Vapor Mediated Interactions in Droplets
O. Hegde
Department of Mechanical Engineering, Indian Institute of Science, Bangalore · 2022
Advisor: Prof. Saptarshi Basu
M.Tech
CFD Analysis of Natural Convection in Evacuated Tube Solar Water Heater
O. Hegde
Department of Mechanical Engineering, National Institute of Technology Jamshedpur · 2016
Advisor: Prof. Ram Vinoy Sharma
PDF
Awards & Recognition
2024
National Post-Doctoral Fellowship (NPDF), IIT Bombay
Awarded by ANRF, India
Certificate
2023
Faculty Lecturer, Brandeis MRSEC Microfluidics Course
Taught experimental microfluidics and led hands-on device-fabrication labs
Certificate Course
2022
Postdoctoral Fellowship, Brandeis University
Funded by a Human Frontier Science Program (HFSP) grant
Certificate
2020
AWSAR Award, Department of Science and Technology, India
For the science communication article, Tiny Droplets Bring Big Benefits
Read
2018
Best Poster Award, COMPFLU International Conference
Certificate
2014
99th percentile, GATE (Mechanical Engineering)
Certificate
2014
Best Outgoing Student, Basaveshwar Engineering College
2014
Academic Rank 4, Mechanical Engineering, Basaveshwar Engineering College
Batch of 2010 to 2014
Certificate