Areas of Interest
- Statistical Physics
- Soft Matter
- Fluid Dynamics
- Bayesian Statistics
- Active Matter
Current Research
My research is in the area of soft matter physics. With this principal theme, I study problems in statistical mechanics, fluid mechanics, and biophysics. Much of my current focus is on studying active particle suspensions. Active particles - such as microorganisms and synthetic microswimmers - are a class of colloids that create fluid flow even when they are stationary. Current research directions include: (a) studying the role of fluid-mediated interactions in determining the collective dynamics of active particles and (b) building continuum theories of active matter systems.
Students
Current PhD Students
Recent Publications
- Efficient Bayesian inference of fully stochastic epidemiological models with applications to COVID-19.
Li, Yuting I; Turk, Günther; Rohrbach, Paul; Pietzonka, Patrick; Kappler, Julian; Singh, Rajesh; Dolezal, Jakub; Ekeh, Timothy; Kikuchi, Lukas; Peterson, Joseph D; .
Royal Society Open Science.
8.
211065 .
DOI: https://doi.org/10.1098/rsos.211065.
2021.
- Controlled optofluidic crystallization of colloids tethered at interfaces.
Caciagli, Alessio; Singh, Rajesh; Joshi, Darshana; Adhikari, R; Eiser, Erika; .
Physical Review Letter.
125.
68001.
DOI: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.068001.
2020.
- PyStokes: phoresis and Stokesian hydrodynamics in Python.
Singh, Rajesh; Adhikari, Ronojoy; .
Journal of Open Source Software.
5.
2318.
DOI: https://doi.org/10.21105/joss.02318.
2020.
- Self-propulsion of active droplets without liquid-crystalline order.
Singh, Rajesh; Tjhung, Elsen; Cates, Michael E; .
Physical Review Research.
2.
32024.
DOI: https://dx.doi.org/10.1103/PhysRevResearch.2.032024.
2020.
- Ritz method for transition paths and quasipotentials of rare diffusive events.
Kikuchi, Lukas; Singh, Rajesh; Cates, Mike E; Adhikari, Ronojoy; .
Physical Review Research.
2.
33208.
DOI: https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.2.033208.
2020.
- Periodic orbits of active particles induced by hydrodynamic monopoles.
Bolitho, Austen; Singh, Rajesh; Adhikari, R; .
Physical Review Letters.
124.
88003.
DOI: https://doi.org/10.1103/PhysRevLett.124.088003.
2020.
- Hydrodynamically interrupted droplet growth in scalar active matter.
Singh, Rajesh; Cates, ME; .
Physical Review Letters.
123.
148005.
DOI: https://dx.doi.org/10.1103/PhysRevLett.123.148005.
2019.
- Competing chemical and hydrodynamic interactions in autophoretic colloidal suspensions.
Singh, Rajesh; Adhikari, R; Cates, ME; .
The Journal of Chemical Physics.
151.
44901.
DOI: https://dx.doi.org/10.1063/1.5090179.
2019.
- Electrohydrodynamic Assembly of Ambient Ion-Derived Nanoparticles to Nanosheets at Liquid Surfaces.
Sarkar, D; Singh, R; Som, A; Manju, C K; Ganayee, M; Adhikari, R; Pradeep, T; .
The Journal of Physical Chemistry C.
122.
17777.
DOI: https://dx.doi.org/10.1021/acs.jpcc.8b04169.
2018.
- Flow-induced phase separation of active particles is controlled by boundary conditions.
Thutupalli, Shashi; Geyer, Delphine; Singh, Rajesh; Adhikari, Ronojoy; Stone, Howard; .
Proceedings of the National Academy of Sciences.
115.
5403.
DOI: https://doi.org/10.1073/pnas.1718807115.
2018.
- Fast Bayesian inference of the multivariate Ornstein-Uhlenbeck process.
Singh, Rajesh; Ghosh, Dipanjan; Adhikari, R; .
Physical Review E.
98.
12136.
DOI: https://dx.doi.org/10.1103/PhysRevE.98.012136.
2018.
- Generalized Stokes laws for active colloids and their applications.
Singh, Rajesh; Adhikari, R; .
Journal of Physics Communications.
2.
25025.
DOI: https://dx.doi.org/10.1088/2399-6528/aaab0d.
2018.
- Direct verification of the fluctuation-dissipation relation in viscously coupled oscillators.
Paul, Shuvojit; Laskar, Abhrajit; Singh, Rajesh; Roy, Basudev; Adhikari, R; Banerjee, Ayan; .
Physical Review E.
96.
50102.
DOI: https://doi.org/10.1103/PhysRevE.96.050102.
2017.
- Fluctuating hydrodynamics and the Brownian motion of an active colloid near a wall.
Singh, Rajesh; Adhikari, R; .
European Journal of Computational Mechanics.
26.
78.
DOI: https://doi.org/10.1080/17797179.2017.1294829.
2017.
- Fast Bayesian inference of optical trap stiffness and particle diffusion.
Bera, Sudipta; Paul, Shuvojit; Singh, Rajesh; Ghosh, Dipanjan; Kundu, Avijit; Banerjee, Ayan; Adhikari, R; .
Scientific Reports.
7.
41638 .
DOI: http://doi.org/10.1038/srep41638.
2017.
- Universal hydrodynamic mechanisms for crystallization in active colloidal suspensions.
Singh, Rajesh; Adhikari, R; .
Physical Review Letters.
117.
228002.
DOI: https://doi.org/10.1103/PhysRevLett.117.228002.
2016.
- Many-body microhydrodynamics of colloidal particles with active boundary layers.
Singh, Rajesh; Ghose, Somdeb; Adhikari, R; .
Journal of Statistical Mechanics: Theory and Experiment.
2015.
P06017.
DOI: http://dx.doi.org/10.1088/1742-5468/2015/06/P06017.
2015.
- Phase-plane analysis of driven multi-lane exclusion models.
Yadav, Vandana; Singh, Rajesh; Mukherji, Sutapa; .
Journal of Statistical Mechanics: Theory and Experiment.
2012
.
P04004.
DOI: http://dx.doi.org/10.1088/1742-5468/2012/04/P04004.
2012.
Teaching
- 2022 : (Jan - May) - PH1020 - Physics II ; (Jul - Nov) PH1010 Physics I
- 2023 : (Jan - May) - PH1020 - Physics II