Dr. (Ms.) Tanuja Mohanty
Assistant Professor, School of Physical Sciences (since April, 2006),
Jawaharlal Nehru University (JNU), New Delhi-67, India
Phone : 91-11-26738769 (O), 91-11-26132135
e-mail: tmohanty@mail.jnu.ac.in

Research Experience:

Post Doctoral Scholar: Inter University Accelerator Centre, New Delhi (2003-2006)

Research Associate: Inter University Accelerator Centre, New Delhi (2000-2003)

Project Scientist: Physics Department, I.I.T. Delhi (1998-1999)

Ph.D.(Physics): Utkal University, Orissa – 1999 (Ph.D. work carried out at Nuclear Science Centre, New Delhi), Thesis: “Ion Irradiation studies in Cuprate Superconductors”

M.Phil. (Physics): Utkal University, Orissa - 1993

Current Area of Research : Synthesis and characterizations of nanoscale semiconductor and oxide materials,  synthesis of nanocrystalline thin films, multilayers, study of defects in solid state materials, Ion Beam Synthesis of embedded nanostructures of semiconductors, Study of ion interaction with nanoparticles, Nanosensors, solar Cell

Synthesis Techniques: RF sputtering, e-beam evaporation, Sol-gel techniques are used for synthesis of nanocrystalline thin films, use of swift heavy ion beam for amorphous to nanocrystalline transition of thin films,

Publication in International Journals:

    (a) In Nanoscience area:  

  1. Synthesis of nanodimesional TiO2 thin films, M. Thakurdesai, T. Mohanty, John J, T.K. Gundu Rao, Pratap Raychaudhuri,V. Bhattacharya, D. Kanjilal, J. of Nanoscience Nanotechnol 8 (2008) 1-8

  2. Formation of controlled semiconductor nanostructures by dense electronic excitations, Y. Batra, T. Mohanty and D. Kanjilal, Nucl. Instrum. and Meth. B  266 (2008) 3107

  3. Nanocrystalline SnO2 formation using energetic ion beam, T. Mohanty, Y. Batra, A. Tripathi and D. Kanjilal,  J. Nanosci. Nanotechnol 7 (2007) 2036.

  4. Investigation of nanosize defects in InP induced by swift iron ions R.L. Dubey, S.K. Dubey, A.D. Yadav, S.D. Pandey, T.K. Gundu Rao, T. Mohanty and D. Kanjilal, Nucl. Instrum. and Meth. B 257 (2007) 287

  5. Synthesis of nanocrystalline Tin Oxide thin film by swift heavy ion irradiation,  T. Mohanty, P V Satyam and D. Kanjilal, J. of Nanosci. and Nanotechnol.  6, (2006) 2554.

  6. Luminescence from Si nanocrystal grown in fused silica using keV and MeV beam T. Mohanty, Mishra N C, Pradhan Asima and Kanjilal D, Surf. and Coat. Technol. 196 (2005) 34.

  7. Nanoprecipitation in transparent matrices using an energetic ion beam T. Mohanty, A. Pradhan, S. Gupta and D. Kanjilal, Nanotechnology 15 (2004) 1620.

    (b) In Material Science:

  8. Point defect creation by low fluence swift heavy ion irradiation-induced low energy electrons in YBa2Cu3O7-y, R. Biswal, J. John, D. Behera, P. Mallick, Sandeep Kumar, D. Kanjilal, T. Mohanty, Pratap Raychaudhuri, N.C. Mishra, Supercond. Sci. and Technol. 21(2008) 085016

  9. Investigation on the 100 MeV Au 7+ ion  irradiation of GaN, V. Suresh Kumar,  M. Senthil Kumar, J. Kumar, T. Mohanty,  D. Kanjilal, A. Tripathi, F. Fontana and A. Kamarani, Semicond. Sci. Technol. 22(2007) 571.

  10. Epitaxial reccrystallization of amorphous Si layers by swift heavy ions P.K. Sahoo, T. Mohanty, D. Kanjilal, A. Pradhan and V.N. Kulkarni, Nucl. Instrum. and Meth. B 257 (2007) 244.

  11. Swift heavy ion irradiation induced modification of tris- (8- hydroxyquinoline) aluminum thin films,  K. Thangaraju, R. Kumaran, T. Mohanty, K. Asokan, P. Ramamurthy, D. Kanjilal and J. Kumar, Rad. Eff. Def. in Solids 161 (2006) 695

  12. Studies of defects and annealing behavior of  silicon irradiated with 70 MeV 56Fe ions,  S. K. Dubey, A.D. Yadav, B. K. Kamalapurkar, T.K. Gundu Rao, M. Gokhale, T. Mohanty and D. Kanjilal, Nucl. Instrum. and Meth. B 244 (2006) 157

  13. Study of optical properties of swift heavy ion irradiated gallium Antimonide, S.K. Dubey, R. L. Dubey, A.D. Yadav, T.K. Gundu Rao, T. Mohanty and D. Kanjilal, Nucl. Instrum. and Meth. B 244 (2006) 141.

  14. Effect of swift heavy ions of silver and oxygen in GaN, V. Suresh Kumar, P.  Puviarasu, F. Singh, T. Mohanty, D. Kanjilal and J. Kumar, Nucl. Instrum. and Meth. B 244 (2006) 145

  15. Modifications in TL characteristics of K2Ca2(SO4)3 : Eu by 7Li MeV ion beam, P.D. Sahare,  Numan Salah,  S P Lochab, T. Mohanty and D. Kanjilal, J. of Physics D:  Appl. Phys. 38 (2005) 3995.

  16. DenseElectronic Excitation induced defects in fused silica T. Mohanty, N.C. Mishra, S.V. Bhat, P.K. Basu and D. Kanjilal,  J. of Physics D: Applied Physics 36 (2003) 3151.

  17. Latent track creation in fused silica by 200 MeV Silver Beam, T.  Mohanty, P.V. Satyam P V, N.C. Mishra and D. Kanjilal, Rad. Meas.  36 (2003) 137.

  18. Color center formation in sapphire by swift heavy ion irradiation, T. Mohanty, N.C. Mishra, F. Singh, S.V. Bhat and D. Kanjilal, Rad. Meas. 36 (2003) 723.

  19. Swift heavy ion irradiation induced modifications in Al2O3, T. Mohanty, N.C. Mishra, F. Singh, U. Tiwari and D. Kanjilal, Nucl. Instrum. and Meth. B 212 (2003) 179.

  20. Effect of Secondary Electrons from latent tracks created in YBCO by swift heavy ion irradiation, D. Behera, T. Mohanty, S. Dash, T. Banerjee, D. Kanjilal, N.C. Mishra, Rad. Meas. 36 (2003) 125.

  21. Investigation of 70 MeV iron irradiation induced defects in c-Silicon, B. A. Kamalapurkar, S.K. Dubey, Yadav A D, K G Bhole, T. Mohanty and D. Kanjilal, Nucl. Instrum. and Meth. B 2121 (2003) 525.

  22. High Energy Ion implantation on silicon, K G Bhole, A K Bhagyashree, S K Dubey,  A.D.Yadav, T. Mohanty and D. Kanjilal, (2003), Nucl. Instrum. and Meth. B 211 (2003) 383.

  23. N.C. Mishra, D. Behera, T. Mohanty, D. Mahanta, D. Kanjilal, G.K. Mehta and R. Pinto, Granularity controlled irradiation response of cuprate superconductors Nucl. Instrum. and Meth. B 156 (1999) 30.

  24. N.C. Mishra, D. Behera, T. Mohanty, K. Patnaik, L. Senapati, O.G. Singh, D. Kanjilal, G.K. Mehta and R. Pinto, 140 MeV Si-Ion irradiation induced Tc  enhancement in YBCO thin films, Mod. Phys. Lett. B, 13 (1999) 79.

  25. T. Mohanty, N.C. Mishra, K. Patnaik, L. Senapati, D. Kanjilal and G.K. Mehta, Defect dynamics in ion irradiated cuprate superconductors, Vacuum 48 (1997) 973.

  26. T. Mohanty, N.C. Mishra, K. Patnaik, L. Senapati, D. Kanjilal and G.K. Mehta, The Physics of Disordered Materials, 250 MeV Ag ion irradiation induced defects in YBa2Cu3O7-y thick films,  Edited by M.P. Saxena and Deepika Bhandari, 1997 pp. 279-283, NISCOM, New Delhi

  27. T. Mohanty, N.C. Mishra, K. Patnaik, L. Senapati, D. Kanjilal and G.K. Mehta, Diffusion assisted defect annealing studies in high energy heavy ion irradiated cuprates, Mater. Sci. Forum, 223-224 (1996) 187.

  28. Heavy ion irradiation induced transient behaviour studies in cuprate superconductors. T. Mohanty, A.K. Mohapatra, P.K. Samal, B.N. Dash, D. Behera, H.P. Mohapatra, S. Misra, N.C. Mishra, K. Patnaik, L. Senapati, D. Kanjilal and G.K. Mehta, Ind. J. Phys. 69A (1995) 29.

  29. Role of Alkaline Earth ions in charge transfer in cuprate superconductors. P.K. Samal, H.P. Mohapatra, S. Misra, S. Mohapatra, G.S. Roy, T. Mohanty, D. Behera, N.C. Mishra and K. Patnaik, Ind. J. of Phys. 69 A (1995) 45.

Principal Investigator of Research Projects :

  1. “Growth of Si-nanoclusters in insulators by ion beam” Fast Track  Project Funded by Department of Science and Technology 2004-2007

  2. “Synthesis and characterization one dimensional (1D) tin oxide nanostructures and their modifications by Ion beam”2007-2010 Funded by Inter University Accelerator Centre, New Delhi, New Delhi

As  Reviewer of International Reputed Journals

  1. Reviewed three papers published in Nanotechnology 2005, 2006

  2. Reviewed two papers published in Beam interaction with Materials :Nucl. Instrum. and Meth. B 2006

  3. Reviewed two papers to be published in Surface and Coating Technology 2008

  4. Reviewed one paper to be published in Int. J. Nanotechnology 2009

Member of the Editorial Review Board, Scientific Journal International (SJI) 

Invited talk in National and International Conferences (Nanoscience)

  1. Ion beam induced shaping and resizing of oxide nanostructure, T. Mohanty DAE-BRNS sponsored seminar cum workshop on “Materials characterization and surface modification in research and industry using ion accelerators (MICA) to be held at Institute of Physics, Bhubaneswar from 31st March to 4th April 2008

  2. Modification of Oxide Nanostructures by Energetic ion Bombardment, Tanuja Mohanty, International Conference-cum-Workshop on Nanoscience and Nanotechnology, December 17-21, 2007 AIT, Gurgaon

  3. 250 keV Argon ion Beam induced grain growth of Tin oxide nanocrystalline thin films, T. Mohanty, S. Dhounsi, P. Kumar and D. Kanjilal, 15th International Conf. on Surface of modification of Materials by Ion beam, 2007 (SMMIB) held at Mumbai University 30th Sept. to 5th Oct. 2007

  4. Ion Implantation: A Technique for Nucleation and Growth of Monodisperse Nanoparticles, T. Mohanty, Workshop on Synthesis and Characterization of   Advanced Functional Materials, IGCAR,   Kalpakkam, 26th March to 28th March 2007

Presentation in National and International Conferences

  1. Ion Beam induced Nanocrystallization of Doped and undoped tin oxide Semiconductors, Advance Nanomaterials (ANM-2007) an International\   Conference on Experimental Condensed Matter Physics, January 8-10, 2007, IIT, Mumbai

  2. Nanocrystalline SnO2 phase formation by energetic ion beam International Conference on Nano Science and Technology (ICONSAT -2006),  16th-18th March 2006,  New Delhi

  3. Control of size distribution of SnO2 nanophase thin films by 250 keV Xe ion beam, , Indo-German International Workshop, Feb. 2005 held at Nuclear Science Centre, New Delhi, India

  4. Nanophase formation in transparent matrices, T. Mohanty, D. Kanjial, presented  in  DAE Solid State Symposium 2004, Amritsar, India

  5. Optical Studies of Swift heavy Ion Induced Defects in fused silica, T. Mohanty, F.  Singh, R. Raman and D. Kanjilal,  Presented in National Laser Symposium held from 22nd -24th Dec. 2003, at I.I.T. Kharagpur, India

  6. Ion Beam Synthesis of Silicon Nanostructures Embedded in Transparent Dielectrics, T. Mohanty, R. Krishna, Asima Pradhan and D. Kanjilal, Presented in International Conference on Nano Science and Technology ( ICONSAT -2003) held from 17th  - 20th  December , SINP, Calcutta, India

  7. Luminescence from Si-nanocrystals grown using keV and MeV beam, T. Mohanty  Oral presentation in 13th International Conference on Surface of modification of Materials by Ion beam, 2003 (SMMIB 03) held at San Antonio, Texas, U.S.A. from 21st -26th September  2003. 

  8. Luminescence in Sapphire induced by Swift heavy Ion irradiation, Proceedings of National Symposium on Luminescence and its Applications (NSLA) 2003, p 350-352.

  9. Swift Heavy Ion Irradiation Induced Optical Changes in a-Al2O3 20th International Conference on Atomic Collision on Solids (ICACS-20) held at Puri, India, 2003.  

  10. Latent track creation in fused silica by 200 MeV silver beam,   21st International Conference on Nuclear tracks in Solids (ICNTS-21), held in Oct. 2002 

  11. ESR Studies of 70 MeV Iron Irradiated Silicon,  DAE Solid State Symposium 2002.

  12. Swift Heavy Ion Induced Modification in Optical Properties of SiO2,    DAE Solid State Symposium 2002 

  13. Secondary electron emission induced point defects in SHI irradiation on YBCO thin films,  Proceedings of DAE Solid State Symposium 44 (2001) 343

  14. Swift heavy ion induced structural modification in GaAs,  Proceedings of DAE Solid State Symposium 44 (2001) 521-522.

  15. Nanophase Thin Film Deposition by Reactive RF Magnetron Sputtering.   National Symposium on Vacuum Technology and Thin Films, September, 2001.

  16. Ag induced Suppression of Irradiation Response in YBCO/Ag Composite Thin Films.   DAE - SSPS 1998

  17. 140 MeV Si-ion irradiation effect in YBCO thin films,  Proc. of International Symposium on advances in Superconductivity: New Materials' Critical Currents and Devices (1996) 235.

  18. Non-Equilibrium Ordering in O-ion irradiated Cuprates, DAE-Solid State Physics Symposium 1995.