Department of Physics

Indian Institute Of Technology Madras , Chennai
Dr. Sunil Kumar, P. B
HSB 234.2

Director, IIT Palakkad - On EOL


RRI, Bangalore


Complex Fluids, Biological Physics and Statistical Mechanics


044 - 2257 4876


 Current Research :

 Recent Publications :

Colloidal transport by active filaments

Raj Kumar Manna, P. B. Sunil Kumar, R. Adhikari

Journal of Chemical Physics

Volume: 146 Page: 024901 DOI: 10.1063/1.4972010

Year: 2017

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

Volume: 40 Page: 32 DOI: 10.1140/epje/i2017-11515-7

Year: 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

Volume: 26 Page: 160073 DOI: 10.1002/mats.201600073

Year: 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

Volume: 121 Page: 4873 DOI: 10.1021/acs.jpcb.7b01045

Year: 2017

Flow-induced nonequilibrium self-assembly in suspensions of stiff, apolar, active filaments

Ankita Pandey, P. B. Sunil Kumar, R. Adhikari

Soft Matter

Volume: 12 Page: 9068 DOI: 10.1039/c6sm02104b

Year: 2016

How Much Can We Coarse-Grain while Retaining the Chemical Specificity? A Study of Sulfonated Poly(ether ether ketone)

Madhusmita Tripathy, Abhijit P. Deshpande and P. B. Sunil Kumar

Macromolecular Theory Simulations

Volume: 25 Page: 155−169 DOI: 10.1002/mats.201500077

Year: 2016

Membrane-mediated aggregation of anisotropically curved nanoparticles

Alexander D. Olinger, Eric J. Spangler, P. B. Sunil Kumar, Mohamed Laradji

Faraday Discussions, 2016, 186, 265

Volume: 186 Page: 265 DOI: 10.1039/c5fd00144g

Year: 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: DOI: 10.1039/C6SM00464D

Year: 2016

Organelle morphogenesis by active membrane remodeling

N. Ramakrishnan, John H. Ipsen, Madan Rao , P. B. Sunil Kumar

Soft Matter, 2015, 11, 2387

Volume: 11 Page: 2387 DOI: DOI: 10.1039/c4sm02311k

Year: 2015

Monte Carlo simulations of fluid vesicles

K K Sreeja, John H Ipsen, P B Sunil Kumar

J. Phys.: Condens. Matter 27 (2015) 273104

Volume: 27 Page: 273104 DOI: doi:10.1088/0953-8984/27/27/273104

Year: 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 (2015)

Volume: 143 Page: 194902 DOI: DOI: 10.1063/1.4935596

Year: 2015

A computational study of blebbing in lipid membranes

Eric Spangler, P.B. Sunil Kumar, and Mohamed Laradji

Physics Procedia vol 57, 38, 2014

Volume: 57 Page: 38 DOI: 10.1016/j.phpro.2014.08.128

Year: 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

Volume: 141 Page: 054902

Year: 2014

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

Volume: 10 Page: 7306

Year: 2014

Mesoscale computational studies of membrane bilayer remodeling by curvature-inducing proteins

N. Ramakrishnana, P.B. Sunil Kumar and Ravi Radhakrishnan

Physics Reports

Volume: 543 Page: 1-60

Year: 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, DOI: 10.1039/C3SM51715B , 2013

Year: 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) DOI: 10.1038/srep01964

Year: 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 2013, 117, 4072−4080 ( 2013)

Year: 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)

Year: 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

Volume: 139 Page: 224902

Year: 2013

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)

Year: 2012

Anomalous freezing behavior of nanoscale liposomes

Eric J. Spangler, P. B. Sunil Kumar, Mohamed Laradji

Softmatter 42, 10896 (2012)

Year: 2012

Stiffness transition in anisotropic fiber nets

J. A. Astrom P. B. Sunil Kumar ,Mikko Karttunen

Physical Review E 86,021922(2012).

Year: 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)

Year: 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)

Year: 2011

Anisotropic elasticity of fluid membranes

N. Ramakrishnan, P. B. Sunil Kumar, John H. Ipsen

Macromolecular theory and simulations 20, 446(2011)

Year: 2011

Effects of counterion size on the attraction between similarly charged surfaces

Jasna Zelko, Aleš Iglič, Veronika Kralj-Iglič,P. B. Sunil Kumar

J. Chem. Phys 133, 204901 (2010)

Year: 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)

Year: 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)

Year: 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)

Year: 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)

Year: 2009

Phase behavior of multicomponent membranes: Experimental and computational techniques

Luis Bagatolli and P. B. Sunil Kumar

Soft Matter 5, 3234 (2009)

Year: 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 )

Year: 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)

Year: 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)

Year: 2009

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)

Year: 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)

Year: 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)

Year: 2008

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)

Year: 2008