Sriram Rajagopal Ramaswamy (born 10 November 1957) FRS[1] is a Professor at the Indian Institute of Science, Bangalore and was on leave (2012–16) as Director of the Tata Institute of Fundamental Research (TIFR) Centre for Interdisciplinary Sciences in Hyderabad.[2][3][4]


Ramaswamy completed high school at the Modern School, Barakhamba Road, New Delhi, and then moved to the University of Maryland where he was awarded a Bachelor of Science degree in Physics with high honours in 1977.[4] He completed his PhD in theoretical physics at the University of Chicago, graduating in 1983.[5] He completed postdoctoral research at the University of Pennsylvania.[6]


Ramaswamy is a theoretician whose research investigates nonequilibrium statistical physics, soft matter, condensed matter physics and biological physics.[2] His research helped found the field of active matter, which studies the motility and related collective behaviour of objects that convert local energy input into autonomous motion.[1]

He is widely known for formulating the hydrodynamic equations[7][8] governing the alignment, flow, mechanics and statistical properties of suspensions of self-propelled creatures, on scales from a cell to the ocean [9].[10] Key predictions—that macroscopically aligned flocks of swimming bacteria are impossible, and that the addition of swimmers to a fluid can make the viscosity arbitrarily small—have been confirmed in recent experiments. His insight into nonliving imitations of self-propulsion has led to design principles for chemotactic colloids, the first experiments observing giant number fluctuations in flocks, and the creation of flocks with a tiny minority of motile constituents.[1][11][12][13][14]

Awards and honours

Among the awards he has received for his research are the Shanti Swarup Bhatnagar Prize for Science and Technology in 2000 and the Infosys Prize in 2011.[6] He was elected a Fellow of the Royal Society (FRS) in 2016.[1]


  1. ^ a b c d Anon (2016). "Professor Sriram Ramaswamy FRS". London: Royal Society. Archived from the original on 2016-04-29.  One or more of the preceding sentences incorporates text from the royalsociety.org website where:

    "All text published under the heading 'Biography' on Fellow profile pages is available under Creative Commons Attribution 4.0 International License." --Royal Society Terms, conditions and policies at the Wayback Machine (archived 25 September 2015)

  2. ^ a b Sriram Ramaswamy publications indexed by Google Scholar
  3. ^ "Sriram Ramaswamy Homepage". iisc.ernet.in. Archived from the original on 2016-03-04. 
  4. ^ a b "Sriram Ramaswamy CV" (PDF). Hyderabad: tifrh.res.in. Archived from the original (PDF) on 2016-05-12. 
  5. ^ Ramaswamy, Sriram Rajagopal (1983). Solid like behavior in liquid layers: a theory of the yield stress in smectics (PhD thesis). University of Chicago. OCLC 17122087. 
  6. ^ a b "Professor Sriram Ramaswamy: Physical Sciences, 2011". infosys-science-foundation.com. Archived from the original on 2016-03-22. 
  7. ^ Marchetti, M. C.; Joanny, J. F.; Ramaswamy, S.; Liverpool, T. B.; Prost, J.; Rao, Madan; Simha, R. Aditi (2013). "Hydrodynamics of soft active matter". Reviews of Modern Physics. 85 (3): 1143–1189. Bibcode:2013RvMP...85.1143M. doi:10.1103/RevModPhys.85.1143. 
  8. ^ Toner, John; Tu, Yuhai; Ramaswamy, Sriram (2005). "Hydrodynamics and phases of flocks". Annals of Physics. 318 (1): 170–244. doi:10.1016/j.aop.2005.04.011. 
  9. ^ Kumar, Abhishek; Maitra, Ananyo; Sumit, Madhuresh; Ramaswamy, Sriram; Shivashankar, G. V. (2014-01-21). "Actomyosin contractility rotates the cell nucleus". Scientific Reports. 4 (1). doi:10.1038/srep03781. ISSN 2045-2322. 
  10. ^ Ramaswamy, Sriram (2010). "The Mechanics and Statistics of Active Matter". Annual Review of Condensed Matter Physics. 1 (1): 323–345. arXiv:1004.1933Freely accessible. doi:10.1146/annurev-conmatphys-070909-104101. 
  11. ^ Narayan, V.; Ramaswamy, S.; Menon, N. (2007). "Long-Lived Giant Number Fluctuations in a Swarming Granular Nematic". Science. 317 (5834): 105–108. arXiv:cond-mat/0612020Freely accessible. doi:10.1126/science.1140414. 
  12. ^ Levine, Dov; Lubensky, T. C.; Ostlund, Stellan; Ramaswamy, Sriram; Steinhardt, Paul Joseph; Toner, John (1985). "Elasticity and Dislocations in Pentagonal and Icosahedral Quasicrystals". Physical Review Letters. 54 (14): 1520–1523. doi:10.1103/PhysRevLett.54.1520. PMID 10031060. 
  13. ^ Aditi Simha, R.; Ramaswamy, Sriram (2002). "Hydrodynamic Fluctuations and Instabilities in Ordered Suspensions of Self-Propelled Particles". Physical Review Letters. 89 (5): 058101. arXiv:cond-mat/0108301Freely accessible. doi:10.1103/PhysRevLett.89.058101. PMID 12144468. 
  14. ^ Kumar, Nitin; Soni, Harsh; Ramaswamy, Sriram; Sood, A. K. (2014). "Flocking at a distance in active granular matter". Nature Communications. 5: 4688. arXiv:1402.4262Freely accessible. doi:10.1038/ncomms5688. PMID 25181961.