Name: Sujata Tarafdar

Designation: Professor of Physics, Jadavpur UniversityDate of birth: 12th October, 1953

Email: sujata_tarafdar@hotmail.com, sujata@phys.jdvu.ac.in Academic career

Bachelor of Science from Jadavpur University, 1973, Ist ClassMaster of Science from Jadavpur University, 1975, Ist Class, awarded University Gold medal for securing 1st position. Specialisation- Solid State PhysicsPh.D from Jadavpur University, 1984

Employment

1984-1990 Lecturer in Physics at B K C Collge, Kolkata1990-2002 Lecturer – Reader in Physics, Jadavpur University, KolkataAt present – Professor of Physics, Jadavpur University

Courses taught:

Classical mechanics, Quantum mechanics, statistical physics, thermodynamics, solid state physics

Research Interests:

Fractals and disordered systems, superionic conductors – mainly polymers, viscous fingering and crack patterns – studied through experiments and computer simulation, Wetting and spreading of complex fluids.

Ongoing research projects:

1. Principal investigator of UGC Project: Wetting, spreading and adhesion of complex fluids on solids F 34-38/2008 (SR) ends 31st Jan 2012.

2. PI of Indo-Japan collaborative project under DST-JSPS, Effect of competing mechanical and electromagnetic perturbation on formation of surface cracks, No.DST/INT/JSPS/P-128/11, with Dr. Akio Nakahara, Nihon University, Japan.

3. CI of Indo-French project under IFCPAR, (PI Dr. Tapati Dutta, St. Xavier’s College, Kolkata) with Dr. Phillipe Gouze, University of Montpellier.

Completed projects;

1. Principal investigator of UGC-DAE CSR project (CSR-092/JU/P/ST/7394) "Ion beam modification of conducting oxides -polymers and inorganics"

2. Principal investigator of SERC project "Study of Rheology, adhesion and viscous fingering in soft matter", (No. SR/S2/CMP-22/2004)

3. Co-investigator of UGC project "Petrotechtonic evolution of the chromite-bearing anorthosite bodies and two-pyroxene granulites of Sittampundi, TN", PI -- Prof. S Mitra, Geology Department, JU (2003-2006)

4. “Study of Viscous Fingering in a lifting Hele-Shaw cell” In collaboration with Prof. Martine ben Amar, LPS-ENS, Paris, under Indo-French Society for Promotion of Advances Research.

5. Study of ion-conducting polymers by impedance spectroscopy anda. positron annihilation" BRNS project

6. "Structure and Properties of Porous Sediments" Indo-Ukraine project under DST, Govt. of India, in collaboration Prof. N I Lebovka, Kiev.

7. "Study of Grain Boundary Effects on Conductivity of Polycrystalline and composite superionic conductors" under UGC, Govt.of India.

Total number of research publications: 94

List of Publications since 2007

1. Ion conductivity and Young's Modulus of the polymer electrolyte PEO-ammonium perchlorate, M Maitra Goswami, M Sinha, T R Middya, A Mukherjee, U De, S Tarafdar Solid State Ionics 178 (2007) 167-171

2. Simulation of diagenesis and permeability variation in two-dimensional rock structure, S Sadhukhan, T Dutta, S Tarafdar Geophys. J. Int. 169 (2007) 1366

3. Bidisperse ballistic deposition model for simulating porous media: effect of grain size, composition and relaxation, S Sadhukhan, T Dutta and S Tarafdar J. Stat. Mech: Th. and Expt. doi 10.1088/1742-5468/2007/06/P06006

4. Desiccation crack patterns in drying laponite gel formed in an electrostatic field, D Mal, S Sinha, T R Middya and S Tarafdar Appl. Clay Sci. 39 (2008) 106

5. Field induced radial crack patterns in drying laponite gel, D Mal, S Sinha, T R Middya and S Tarafdar, Physica A, 384 (2007) 182

6. Desiccation cracks on different substrates: simulation by a spring network model S Sadhukhan, S Roy Majumder, D Mal, T Dutta, S Tarafdar J. Phys. Cond. Mat. 19 (2007) 356206

7. Anomalous diffusion on random fractal composites, D H N Anh, P Blaudeck, K H Hoffmann, J Prehl, S Tarafdar J. Phys. A: Math. Gen. 40 (2007) 11453

8. Anti-persistence in levels of Lake Naivasha: assessing effect of human intervention through time-series analysis, Sujata Tarafdar and David Harper, Physica A, 387 (2008) 296

9. Pore structure and conductivity modelled by bidisperse ballistic deposition with relaxation, S Sadhukhan, T Dutta, S Tarafdar, Modelling Simul. Mater. Sci. Eng. 15 (2007) 773

10. Effect of Gamma Irradiation on the Polymer Electrolyte PEO-NH$_4$ClO$_4$, M.Sinha, M Maitra, D Mal, T R Middya, S. Tarafdar, U De, S. K. Chaudhuri, D Das, Ionics, 14 (2008) 323

11. Adhesion and fingering in the lifting Hele-Shaw cell: Role of the substrate,Suparna Sinha, Tapati Dutta and Sujata Tarafdar, Eur. Phys. J, E 25 (2008) 267

12. Chaotic behaviour of population on a square lattice, Tapati Dutta, Sujata Tarafdar, Ind. J. Phys 82,(2008) 201

13. Permeability variation with fracture dissolution: Role of diffusion vs. drift, Supti Sadhukhana, Dibendyu Mal, Tapati Dutta, S. Tarafdar, Physica A 387 (2008) 4541

14. Crack formation in drying laponite, S Tarafdar and S Sinha, Ind. Engg. Chem. Res. 47 (2008) 6459

15. Effect of Gamma Irradiation on Properties of Polymer Electrolytes, S Tarafdar, P Nanda, U De, S Manna and S K De, Solid State Ionics: New materials for pollution free energy devices, ed. B V R Chowdari et al, (Macmillan India, Delhi, 2008) Proc. 11th Asian Conf. on Solid State Ionics, Coimbatore, India, pg. 99

16. DSC study of effect of gamma irradiation on a polymer electrolyte, P Nanda, T R Middya, U De and S Tarafdar, Solid State Ionics: New materials for pollution free energy devices, ed. B V R Chowdari et al, (Macmillan India, Delhi, 2008) Proc. 11th Asian Conf. on Solid State Ionics, Coimbatore, India, pg. 543

17. Viscous fingering patterns and evolution of their fractal dimension, S Sinha and S Tarafdar, Ind. Engg. Chem. Res. Ind. Engg. Chem. Res. 47, (2008) 6459

18. Scaling laws for spreading of a liquid under pressure, S Nag, S Sinha, S Tarafdar, Appl. Surf. Sci. 256 (2), pp. 353-355 (2009)

19. Fingering and pressure distribution in lifting Hele-Shaw cells with grooves: A computer simulation study, by Sujata Tarafdar, Suparna Sinha, Soma Nag, Tapati Dutta, Phys. Rev. E, 80,026315 (2009)

20. Computer simulation of viscous fingering in a lifting Hele-Shaw cell with grooved plates, S Tarafdar, S Nag, T Dutta, S Sinha, accepted for publication in Pramana – J. Phys.

21. Crack patterns in desiccating clay-polymer mixtures with varying composition Nag, S., Sinha, S., Sadhukhan, S., Dutta, T., Tarafdar, S. 2010 Journal of Physics Condensed Matter 22 (1), art. no. 015402

22. Effect of gamma irradiation on a polymer electrolyte:Variation in crystallinity, viscosity and ion-conductivity with dose Nanda, P., De, S.K., Manna, S., De, U., Tarafdar, S. 2010 Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 268 (1), pp. 73-78 (2010)

23. Conductivity enhancement in polymer electrolytes on gamma irradiationPradyot Nanda a, Sankar Maity a, Namita Pandey b, Ruma Ray c, A.K. Thakur b, Sujata Tarafdar, Radiation Physics and Chemistry 80 (2011) 22–27

24. Spreading of fluids on solids under pressure: Slip and stick effects, Soma Nag a, Tapati Dutta b, Sujata Tarafdar, Journal of Colloid and Interface Science 356 (2011) 293–297

25. Crack formation in composites through a spring model, Supti Sadhukhana, Tapati Dutta b, Sujata Tarafdar, Physica A 390 (2011) 731–740

26. Spreading of Non-Newtonian and Newtonian Fluids on a Solid Substrate under Pressure, Moutushi Dutta Choudhury , Subrata Chandra , Soma Nag , Shantanu Das and Sujata Tarafdar, Continuum Models and Discrete Systems Symposia (CMDS-12) Journal of Physics: Conference Series 319 (2011) 012006

27. Forced spreading and rheology of starch gel: Viscoelastic modeling withfractional calculus, Moutushi Dutta Choudhury, Subrata Chandraa, Soma Naga, Shantanu Das, Sujata Tarafdar, Colloids and Surfaces A: Physicochem. Eng. Aspects 407 (2012) 64– 70