PHYSICS

Faculty Details

Sunil Kumar, P. B

Professor

HSB 234.2
Ph.D. RRI, Bangalore

📞 044 - 2257 4876
✉️ sunil@iitm.ac.in

👤 Personal Home Page

Areas of Interest

✔ Complex Fluids ✔ Biological Physics ✔ Statistical Mechanics

Current Research

Students

Current PhD Students

✔ PH15D010 SANDEEP MATHEW

Recent Publications

✔ Nonequilibrium switching of segmental states can influence compaction of chromatin. Soudamini Sahoo, Sangram Kadam, Ranjith Padinhateeri and P. B. Sunil Kumar. 20. 4621. DOI: 10.1039/d4sm00274a. 2024.
✔ Ligand?Mediated Interaction of Nanoparticles with Lipid Membranes. Sandeep Mathew, M Laradji, P B Sunil Kumar. Macromoelcular theory and simulations . 33. 2300058. DOI: . 2023.
✔ Collective vortical motion and vorticity reversals of self-propelled particles on circularly patterned substrates. H Wen, Y Zhu, C Peng, P B Sunil Kumar, M Laradji. Physicsl Reveiew E . 107. 024606. DOI: . 2023.
✔ Lipid vesicles induced ordered nanoassemblies of Janus nanoparticles. Y Zhu, A Sharma, EJ Spangler, JMY Carrillo, P B Sunil Kumar, M Laradji. Soft Matter. 19. 2204. DOI: 10.1039/D2SM01693A. 2023.
✔ Active membrane recycling induced morphology changes in vesicles. Sachin Krishnan T V, P. B. Sunil Kumar. Frontiers in Physics. 10. 1003558. DOI: 10.3389/fphy.2022.1003558. 2022.
✔ Active Remodeling of Chromatin and Implications for In Vivo Folding. Ramakrishnan Natesan, Kripa Gowrishankar, Lakshmi Kuttippurathu, P. B. Sunil Kumar, and Madan Rao. Journal of Physical Chemistry B. 126. 100. DOI: 10.1021/acs.jpcb.1c08655. 2022.
✔ Collective motion of cells modeled as ring polymers. Haosheng Wen, Yu Zhu, Chenhui Peng, aP. B. Sunil Kumar, and Mohamed Laradji. Soft Matter. 18. 1228. DOI: 10.1039/d1sm01640g. 2022.
✔ Binding, unbinding and aggregation of crescent-shaped nanoparticles on nanoscale tubular membranes. Eric J. Spangler, Alexander D. Olinger, P. B. Sunil Kumar and Mohamed Laradji. Soft Matter. 17. 1016. DOI: doi.org/10.1039/D0SM01642J. 2021.
✔ Penetrant-Induced Glass-like Transition in Thin Chitosan Films. Aathira Murali, Manikandan Ganesan, Dillip K. Satapathy*, P. B. Sunil Kumar*. Journal of Physical Chemistry B. 125. 12617. DOI: doi.org/10.1021/acs.jpcb.1c07903. 2021.
✔ Adhesion and Aggregation of Spherical Nanoparticles on Lipid Membranes. Mohamed Laradji, P. B. Sunil Kumar, Eric J. Spangler. Chemistry and Physics of Lipids . 233. 104989. 2020.

✔ Modification of lipid membrane compressibility induced by an electric field. K. R. Prathyusha, Ignacio Pagonabarraga, and P. B. Sunil Kumar. Phy. Rev. E. 102. 062413. DOI: doi.org/10.1103/PhysRevE.102.062413. 2020.
✔ Models for membrane curvature sensing of curvature generating proteins. T. V. Sachin Krishnan, Sovan L. Das and P. B. Sunil Kumar. Pramana. 94. DOI: 10.1007/s12043-020-1915-z. 2020.
✔ Emergent topological phenomena in active polymeric fluids. Raj Kumar Manna, P. B. Sunil Kumar. Soft Matter. 15. 477. DOI: doi.org/10.1039/C8SM01981A. 2019.
✔ Transition from curvature sensing to generation in a vesicle driven by protein binding strength and membrane tension. T. V. Sachin Krishnan, Sovan L. Das, P. B. Sunil Kumar. Soft Matter. 15. 2071. DOI: doi.org/10.1039/C8SM02623H. 2019.
✔ Stability of membrane-induced self-assemblies of spherical nanoparticles. EJ Spangler, P B Sunil Kumar, M Laradji. Soft Matter. 14. 5019. DOI: doi.org/10.1039/C8SM00537K. 2018.
✔ Lipid-protein interaction induced domains: Kinetics and conformational changes in multicomponent vesicles. K. K. Sreeja, P. B. Sunil Kumar. The Journal of Chemical Physics. 148. 134703. DOI: doi.org/10.1063/1.5022494. 2018.
✔ Kosmotropic effect leads to LCST decrease in thermoresponsive polymer solutions. Swaminath Bharadwaj, P. B. Sunil Kumar, Shigeyuki Komura, Abhijit P. Deshpande. The Journal of Chemical Physics. 148. 084903. DOI: doi.org/10.1063/1.5012838. 2018.
✔ Toward Transferable Coarse-Grained Potentials for Poly-Aromatic Hydrocarbons: A Force Matching Approach. Madhusmita Tripathy, Umang Agarwal, P. B. Sunil Kumar . Macromolecular Theory and Simulations. 28. 1800040. DOI: doi.org/10.1002/mats.201800040. 2018.
✔ Numerical insights into the phase diagram of p-atic membranes with spherical topology. A. G. Hansen, N. Ramakrishnan, P. B. Sunil Kumar, J. H. Ipsen. Eur. Phys. J. E. 40. 32. DOI: 10.1140/epje/i2017-11515-7. 2017.
✔ Spherically Symmetric Solvent is Sufficient to Explain the LCST Mechanism in Polymer Solutions. Swaminath Bharadwaj, P. B. Sunil Kumar, Shigeyuki Komura and Abhijit P. Deshpande. Macromolecular Theory and Simulations. 26. 160073. DOI: 10.1002/mats.201600073. 2017.
✔ Molecular Structuring and Percolation Transition in Hydrated Sulfonated Poly(ether ether ketone) Membranes. Madhusmita Tripathy, P. B. Sunil Kumar, Abhijit P. Deshpande. The Journal of Physical Chemistry B. 121. 4873. DOI: 10.1021/acs.jpcb.7b01045. 2017.
✔ Colloidal transport by active filaments. Raj Kumar Manna, P. B. Sunil Kumar, R. Adhikari. Journal of Chemical Physics. 146. 024901. DOI: 10.1063/1.4972010. 2017.
✔ How Much Can We Coarse-Grain while Retaining the Chemical Speciï¬city? A Study of Sulfonated Poly(ether ether ketone). Madhusmita Tripathy, Abhijit P. Deshpande and P. B. Sunil Kumar. Macromolecular Theory Simulations. 25. 155âˆ’169. DOI: 10.1002/mats.201500077. 2016.
✔ Membrane-mediated aggregation of anisotropically curved nanoparticles. Alexander D. Olinger, Eric J. Spangler, P. B. Sunil Kumar, Mohamed Laradji. Faraday Discussions. 186. 265. DOI: 10.1039/c5fd00144g. 2016.
✔ Membrane invagination induced by Shiga toxin B-subunit: from molecular structure to tube formation. W. Pezeshkian, A. G. Hansen, L. Johannes, H. Khandelia, J. C. Shillcock, P. B. Sunil Kumar and J. H. Ipsen. Soft Matter. DOI: 10.1039/C6SM00464D. 2016.
✔ Flow-induced nonequilibrium self-assembly in suspensions of stiff, apolar, active filaments. Ankita Pandey, P. B. Sunil Kumar, R. Adhikari. Soft Matter. 12 . 9068 . 2016.
✔ Organelle morphogenesis by active membrane remodeling. N. Ramakrishnan, John H. Ipsen, Madan Rao , P. B. Sunil Kumar. Soft Matter. 11. 2387. DOI: 10.1039/c4sm02311k. 2015.
✔ Monte Carlo simulations of fluid vesicles. K K Sreeja, John H Ipsen, P B Sunil Kumar. J. Phys.: Condens. Matter. 27. 273104. DOI: 10.1088/0953-8984/27/27/273104. 2015.
✔ Curvature inducing macroion condensation driven shape changes of fluid vesicles. K. K. Sreeja, John H. Ipsen, P. B. Sunil Kumar. J. Chem. Phys.. 143. 194902. DOI: 10.1063/1.4935596. 2015.
✔ Kinetics of domain registration in multicomponent lipid bilayer membranes. Kan Sornbundit, Charin Modchang, Wannapong Triampo, Darapond Triampo, Narin Nuttavut, P. B. Sunil Kumar and Mohamed Laradj. Soft Matter. 10. 7306. 2014.
✔ A computational study of blebbing in lipid membranes. Eric Spangler, P.B. Sunil Kumar, and Mohamed Laradji. Physics Procedia. 57 . 38 . 2014.
✔ Combined effect of cortical cytoskeleton and transmembrane proteins on domain formation in biomembranes. Md. Kabir Uddin Sikder, Kyle A. Stone, P. B. Sunil Kumar, and Mohamed Laradji. Journal of Chemical Physics. 141 . 054902. 2014.
✔ Mesoscale computational studies of membrane bilayer remodeling by curvature-inducing proteins. N. Ramakrishnana, P.B. Sunil Kumar and Ravi Radhakrishnan. Physics Reports. 543 . 1-60. 2014.
✔ Shear-thinning and isotropic-lamellar-columnar transition in a model for living polymers,. Prathyusha K.R., Abhijit P. Deshpande, Mohamed Laradji,P. B. Sunil Kumar. Soft Matter. 2013.
✔ Hydrodynamic instabilities provide a generic route to spontaneous biomimetic oscillations in chemomechanically active filaments. Abhrajit Laskar, Rajeev Singh, Somdeb Ghose, Gayathri Jayaraman, P. B. Sunil Kumar, R. Adhikari. Scientific reports. 3. 1964. 2013.
✔ Predictions of Phase Separation in Three-Component Lipid Membranes by the MARTINI Force Field. Ryan Davis, P. B. Sunil Kumar, Maria Sperotto,Mohamed Laradji. J. Phys. Chem. B. 117. 4072âˆ’4080. 2013.
✔ Membrane-Mediated Aggregation of Curvature-Inducing Nematogens and Membrane Tubulation. N. Ramakrishnan, P. B. Sunil Kumar, and John H. Ipsen. Biophysical Journal. 104 . 1018 . 2013.
✔ Dynamics of a polyelectrolyte in simple shear flow. Kandiledath Jayasree, Raj Kumar Manna, Debapriya Banerjee and P. B. Sunil Kumar. Journal of Chemical Physics. 139 . 224902. 2013.
✔ Anomalous freezing behavior of nanoscale liposomes. Eric J. Spangler, P. B. Sunil Kumar, Mohamed Laradji. Softmatter . 42. 10896. 2012.
✔ Autonomous Motility of Active Filaments due to Spontaneous Flow-Symmetry Breaking. Gayathri Jayaraman, Sanoop Ramachandran, Somdeb Ghose, Abhrajit Laskar, M. Saad Bhamla, P. B. Sunil Kumar, R. Adhikari. PRL. 109. 158302. 2012.
✔ Stiffness transition in anisotropic fiber nets. J. A. Astrom P. B. Sunil Kumar ,Mikko Karttunen. Physical Review E. 86. 021922. 2012.
✔ Role of disclinations in determining the morphology of deformable fluid interfaces. N. Ramakrishnan , John H. Ipsen, P. B. Sunil Kumar . Soft Matter. 8. 3058-3061. 2012.
✔ Computer simulation of cytoskeleton-induced blebbing in lipid membranes. Eric J. Spangler, Cameron W. Harvey, Joel D. Revalee, P. B. Sunil Kumar, Mohamed Laradji. Phys. Rev. E . 84. 051906 . 2011.
✔ Anisotropic elasticity of fluid membranes. N. Ramakrishnan, P. B. Sunil Kumar, John H. Ipsen. Macromolecular theory and simulations. 20. 446. 2011.
✔ Effects of counterion size on the attraction between similarly charged surfaces. Jasna Zelko, AleÅ¡ IgliÄ, Veronika Kralj-IgliÄ,P. B. Sunil Kumar. J. Chem. Phys . 133. 204901 . 2010.
✔ Myosin motor mediated contraction is enough to produce cytokinesis in the absence of polymerisation. Jan A. Astrom, Sebastian von Alfthan, P. B. Sunil Kumar, Mikko Karttunen. Soft Matter . 6. 5375 . 2010.
✔ Monte Carlo simulations of fluid vesicles with in-plane orientational ordering. N. Ramakrishnan, P. B. Sunil Kumar, John H. Ipsen. Phy. Rev. E. 81. 041922. 2010.
✔ Shear induced ordering in branched living polymer solutions. Snigdha Thakur, Prathyusha K. R., Abhijit P. Deshpande, Mohamed Laradji and P. B. Sunil Kumar. Soft Matter . 60. 489 . 2010.
✔ Coarsening through directed droplet coalescence in fluid-fluid phase separation. Snigdha Thakur, Pramod A. Pullarkat and P. B. Sunil Kumar. Phy. Rev. E. 80. 011708 . 2009.
✔ Phase behavior of multicomponent membranes: Experimental and computational techniques. Luis Bagatolli and P. B. Sunil Kumar. Soft Matter. 5. 3234. 2009.
✔ Aster formation and rupture transition in semi-flexible fiber networks with mobile cross-linkers. Jan A. Astrom, P. B. Suni Kumar and Mikko Karttunen. Soft Matter . 5. 2869 . 2009.
✔ The lateral organization of lipids in multi-component liposomes. Sanoop Ramachandran, Mohamed Laradji, P. B. Sunil Kumar. J. Phy. Soc. Jpn. 78. 041006 . 2009.
✔ Equilibrium properties of a grafted polyelectrolyte with explicit counterions. Kandiledath Jayasree, P. Ranjith, Madan Rao and P. B. Sunil Kumar. J. Chem. Phy. 130. 094901 . 2009.
✔ Implicit-solvent mesoscale model based on soft-core potentials for self-assembled lipid membranes. J. D. Revalee, M. Laradji and P. B. Sunil Kumar. J. Chem. Phy. 128. 035102 . 2008.
✔ Lipid flip-flop driven mechanical and morphological changes in model membranes. Sanoop Ramachandran, P. B. Sunil Kumar, and Mohamed Laradji. J. Chem. Phy. 129. 125104 . 2008.
✔ Attraction between negatively charged surfaces mediated by spherical counterions with qudupolar charge distribution. Jasna. Urbanija, Klemen Bohinc, Alfredo Bellen, Stefano Maset, Ales Iglic, Veronika Kralj Iglic and P. B. Sunil Kumar . J. Chem. Phy . 129. 101501 . 2008.
✔ Strain hardening , avalanches , and strain softening in dense cross-linked actin networks. Jan A.Astrom , P. B. Sunil Kumar , Ilpo Vattulainen and Mikko Karttunen. Phys. Rev. E. 77. 051913. 2008.

Teaching

✔ 2023 : (Jan - May) - PH6021 Introduction to Research