Department of Physics

Dr. D. Bharathi Mohan, M.Phil, Ph.D

Assistant Professor

Department of Physics, Pondicherry University

R. V. Nagar, Kalapet, Puducherry-509 014, India

d.bharathimohan@gmail.com

Education & Research Experience (from Bachelor degree on wards)

Aug 2010 on wards: Assistant Professor in the Dept of Physics, School of Physical, Chemical and Applied Sciences, Pondicherry University, Pondicherry, India.
Jan 2010-Aug 2010: Post Doctoral (Brain Korea 21) Fellowship (PDF), Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), South Korea.
Feb 2007-Dec 2009: Post Doctoral Research Fellow (PDF), Department of Mechanical Engineering, University of Coimbra, Portugal.
Dec 2002-Aug 2007: Doctoral Degree in Physics (Ph.D), School of Physics, University of Hyderabad, Hyderabad, India.
Jun 2000-Oct 2002: Master of Philosophy in Physics (M.Phil), School of Physics, University of Hyderabad, Hyderabad, India.
Jun 1998-Sep 2000: Master of Science in Physics (M.Sc), Raman School of Physics, Pondicherry Central University, Pondicherry, India.
Jun 1995-Jul 1998: Bachelor of Science in Physics (B.Sc), T. B. M. L. College (affiliated to Bharathidasan University), Porayar, Tamilnadu, India.

Area of Scientific Activity

Plasmonics, Solar Cells, Nanotribology

Participated in International Meetings

N.M. Figueiredo, D. Bharathi Mohan, F. Vaz, L. Cunha and A. Cavaleiro, Optical properties of sputter deposited WO₃ films doped with Au nanoparticles, European Conference on Nano Films (ECNF 2010), Liege, Belgium, March 22-25, 2010.
Nuno Figueiredo, Filipe Vaz, Luís Cunha, Marc Torrell, D. Bharathi Mohan, João Oliveira, Cristina Louro, Albano Cavaleiro, Au-Al₂O₃ thin films for optical applications by reactive sputtering, PSE 2010, Garmisch-Patenkirchen, Germany, Sep. 2010.
F. Penayo, D. Bharathi Mohan, T. Polcar and A. Cavaleiro, Sputtering of Alumina coatings using water as reactive liquid, Innovations in Thin Film Processing and Characterization (ITFPC), Nancy, France, Nov. 2009.
D. Bharathi Mohan, T. Polcar, C. S. Sandu and A. Cavaleiro, Tribological behaviour of TiN-WS2 nanocomposite coatings, Innovations in Thin Film Processing and Characterization (ITFPC), Nancy, France, Nov. 2009.
D. Bharathi Mohan and A. Cavaleiro, Wear mechanisms in TiN-WS₂ nanocomposite coatings: a FIB-TEM analysis, Joint congress of the Portuguese and Spanish Microscopy Societies, Spain,16-19 June, 2009
D. Bharathi Mohan, European Project Meeting, FOREMOST Programme, Sixth framework programme arranged by European Union, Spain, 2-3 May, 2008.
D. Bharathi Mohan and A. Cavaleiro, Experimental Development and Deposition of TiN-WS2 nanocomposite films by a hybrid dc magnetron sputtering and cluster gun technique,RIVA 7, Lisbon, Portugal, June 2008.
D. Bharathi Mohan and A. Cavaleiro, Deposition of TiN-WS2 nanocomposite coatings by a hybrid process: Sputtering+Nanocluster gun, PSE 2008, Garmisch-Partenkirchen, Germany, September 2008.
D. Bharathi Mohan, European Project Meeting, FOREMOST Programme, Sixth framework programme arranged by European Union, Ljubljana, Slovenia,2007.
D. Bharathi Mohan and C. S. Sunandana, Plasmons and Excitons in ultra thin Ag and AgI films, Nanomeeting 2007, Belarusian State University of Informatics and Radioelectronics, Minsk, Belarus, May 24-28, 2007.

Research Projects

2014-2017: The effect of surface plasmon resonance in Al2O3-Ag nanocomposite coathings for decorative industry, Department of Science and Technology (DST-SERB- Young Scientist), India.
July 2012-June 2015: Fabrication of Ag-ZnO based SERS substrates, UGC-Major Project,India
Jan. 2010 – until today: Large scale synthesis of Nanomaterials and the development of flexible displays and solar cells, KAIST, South Korea.
Feb 2007-Dec 2009:FOREMOST, a sixth framework programme, constituted by European Union, “Nanotechnologies and Nano-Sciences, Knowledge-based Multifunctional Materials and New Production Processes and Devices: Fullerene-Based Opportunities for Robust Engineering, Making Optimized Surfaces for Tribology”, University of Coimbra, Portugal.
Feb 2007-Dec 2009: DECORAT (Decorative coatings by dispersing metal nanoclusters in dielectric matrix. University fo Coimbra, Portugal.

Fellowships and Honors

Young Scientist Award, Fast Track Project, Department of Science and Technology (DST-SERB), Govt. of India, New Delhi, 2013.
Brain Korea 21 post doctoral research fellowship granted by Korea Research Foundation, South Korea (to work for KAIST, Daejeon, SK)
Post-Doctoral Research Fellowship by University of Coimbra, Portugal (to work for European project)
“University with Potential for Excellence” (UPE), a doctoral research fellowship awarded by University of Hyderabad, Hyderabad, India
Qualified JEST (Joint Entrance Screening Test), conducted by National Centre for Radio Astrophysics, Tata Institute of Fundamental Research (TIFR), Pune, India
Science and Technology: Call to Historians, name included in a Newsletter published by University of Hyderabad, Hyderabad, India
Landolt-Bornstein: Numerical Data and Functional Relationships in Science and Technology, Semiconductors, Volume 44, Journal of Physics and Chemistry of Solids 65 (2004) 1669-1677, referred in chapters 23 and 24. DOI: 10.1007/978-3-642-14148-5_23.pdf, DOI: 10.1007/978-3-642-14148-5_24.pdf

Publications: International refereed journals:

Anil Kumar Pal and D. Bharathi Mohan,Structural, morphological and optical properties of Ag-AgO thin films with the effect of increasing film thickness and annealing temperature, Optical Materials, 48 (2015) 121-132.
Anil Kumar Pal and D. Bharathi Mohan, Study of NBE emission enhancement with an absence of DL emission from ZnO nanorods through controlled growth on ultra-thin Ag films, Applied Surface Science, 333 (2015) 244-253.
Anil Kumar Pal and D. Bharathi Mohan, Fabrication of partially oxidized ultra-thin nanocrystalline silver films: effect of surface plasmon resonance on fluorescence quenching and surface enhanced Raman scattering, Materials Research Express (IOP Publisher), 1 (2014) 025014.
P. S. Behra, D. Rajesh, K. Sreejith, D. Bharathi Mohan and C. S. Sunandana, Study of Quasi-Amorphous to Nanocrystalline Phase Transition in Thermally Evaporated CuInS2 Thin Films, Journal of Materials Research, 29 (4) (2014) 542-555.
P. S. Behra, D. Rajesh, K. Sreejith, D. Bharathi Mohan and C. S. Sunandana, Single Phase Formation of CuInS2 Nanoparticles: Structural, Morphological, Thermal Studies with Annealing Effect, Journal of Applied Physics (IOSR-JAP) 4 (6) (2013) 06-12.
D. Bharathi Mohan and C. S. Sunandana, Optical Properties of Structurally Disordered Ag(Sn)I Nanoparticles, Thin Solid Films, 534 (2013) 192-197.
T. Polcar, D. Bharathi Mohan, C. S. Sandu, G. Radnoczi and A. Cavaleiro, Properties of Nanocomposite film combining hard TiN matrix with embedded fullerene like WS2 nanoclusters, Thin Solid Films, 519, Issue 10, (2011) 3191-3195.
D. Bharathi Mohan and C. S. Sunandana, Interfacial control on microstructure, morphology and optics of beta-AgI nanostructures fabricated on sputter-disordered Ag-Sn bilayers, NATURAL SCIENCE 2 (2010) 368-372.
D. Bharathi Mohan and A. Cavaleiro, Deposition of TiN-WS₂ nanocomposte coatings by a hybrid process: dc magnetron sputtering+cluster gun, PLASMA PROCESS AND POLYMERS 6(2009)s923-s927.
D. Bharathi Mohan and A. Cavaleiro, Experimental development and deposition of nanocomposite films by a hybrid dc magnetron sputtering and cluster gun technique, VACUUM, 83(2009)1257.
M.Gnanavel, D. Bharathi Mohan, Optics of Quasi-particle transitions in ultra thin nanstructured silver films, THIN SOLID FILMS, 517(2008)1058.
D. Bharathi Mohan, A. Philip and C. S. Sunandana, Synthesis and characterization of SnI2 nanocrystalline materials, VACUUM 82 (2008) 561.
D. Bharathi Mohan, K. Sreejith and C. S. Sunandana, Synthesis and characterization of thermally evaporated ultra thin Ag and AgI nano films, APPLIED PHYSICS B: LASERS AND OPTICS, 89 (2007) 59.
D. Bharathi Mohan and C. S. Sunandana, Iodization of RF Sputter induced Disorder Ag Thin Films Reveals Surface Plasmon-Exciton ‘Transition’, JOURNAL OF APPLIED PHYSICS 100 (2006) 64314.
D. Bharathi Mohan and V. Sivaji Reddy and C. S. Sunandana, AgI Nanostructure Development in Sputter-Disordered and Al-doped Ag Films probed by XRD, SEM, Optical Absorption and Photoluminescence, APPLIED PHYSICS A: MATERIAL SCIENCE AND PROCESSING, 86 (2006) 73-82.
D. Bharathi Mohan and C.S. Sunandana, The Effect of Sn-doping on the Growth and Optical properties of AgI Nanoparticles, JOURNAL OF NANOSCIENCE AND TECHNOLOGY 5 (2005) 1514-1518.
D. Bharathi Mohan and C. S. Sunandana, Cu Stabilized AgI Superionic Phase Transition through EPR, MODERN PHYSICS LETTERS B, 20 (2006).
V. Sivaji Reddy, D. Bharathi Mohan and C. S. Sunandana, AgI Nanocrystal Growth on RF Sputtered Ag Thin Films, PHYSICS, CHEMISTRY AND APPLICATIONS OF NANOSTRUCTURES (Eds. V.E. Borisenko et al), World Scientific Publishers, New Jersey (2005) pp.371-373.
D. Bharathi Mohan and C. S.Sunandana, Nanophases in mechanochemically synthesized AgI-CuI system: Structure, Phase stability and Phase transitions, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 65 (2004) 1669-1677.
D. Bharathi Mohan and C. S. Sunandana, EPR of Superionic Transition in Mechanochemically Synthesized Nanocrystalline AgI, JOURNAL OF PHYSICAL CHEMISTRY B 110 (2006) 4569.
D. Bharathi Mohan and C. S. Sunandana, Intrinsic Paramagnetic Defects Probe Superionic Phase Transition in Ag1-xCuxI (x=0, 0.05, 0.15 and 0.50) Nanocrystals, JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 67 (2006)2583.
C. S. Sunandana and D. Bharathi Mohan, EPR Probes Ion Dynamics of Superionic Conductors, INDIAN JOURNAL OF PURE AND APPLIED PHYSICS 44 (2006) 637.
D. Bharathi Mohan and C. S. Sunandana, Electronic Conductivity of Mechanochemically Synthesized Nanocyrstalline Ag1-xCuxI System using D.C Polarization Technique, PRAMANA 67 (2006) 331.

Conference Proceedings (Including International)

Anil Kumar Pal and D. Bharathi Mohan, Fabrication of recyclable SERS of Ag/ZnO/Au substrates and thier study on Hemoglobin detection, ORAL presentation by AKP, IUMRS-ICEM 2016, Suntec, Singapore, 4-8, July 2016.
Anil Kumar Pal and D. Bharathi Mohan, Metal-Semiconductor-Metal hybrid nanostructures: Fabrication, SERS enhancement and Recyclability, National Symposium on Nano Science and Nanotechnology, CeNSE, IISc, Bangalore, 29-30, July 2016.
Benjamin Hudson Baby and D. Bharathi Mohan, Phase formation study of SnS nanoparticles synthesized through PVP assisted polyol method, second international conference on materialsscience and technology-ICMST 2016, St. Thomas College Palai, Kerala, 05-08, Jun.2016.
Anil Kumar Pal and D. Bharathi Mohan, SERS Enhancement of Glucose molecules on Layered Hybrid Ag/ZnO/Ag nanostructure, Application of Nanostructured Materials for energy and environmental technology, pp. 185-186 (2015), Bloomsbury Publishers, ISBN: 978-93-85436-91-8.
Anil Kumar Pal and D. Bharathi MohanAg nanoparticles decorated on ZnO nanorods array based SERS substrate for lable free detection of DNA,Application of Nanostructured Materials for energy and environmental technology, pp. 187-188 (2015), Bloomsbury Publishers, ISBN: 978-93-85436-91-8.
Benjamin Hudson baby and D. Bharathi Mohan, Phase study of SnS nanorice synthesized through PVP assisted hydrothermal process, Synthesis and fabrication of nanomaterials, pp. 219-220 (2015), Bloomsbury Publishers, ISBN:978-93-85436-76-5.
Anil Kumar Pal and D. Bharathi Mohan, Label Free Detection of DNA on Au/ZnO/Ag Hybrid Structure Based SERS Substrate, 2nd International Conference on Emerging Technologies: Micro to Nano, Manipal University, Jaipur, 24-25 Oct. 2015 (BEST POSTER AWARD received by AKP). AIP Conf. Proc. 1724 020101 (2016).
Benjamin Hudson Baby and D. Bharathi Mohan, Formation of Single Phase of SnS by Changing Sulphur Concentration in PVP Assisted Polyol Synthesis, 2nd International Conference on Emerging Technologies: Micro to Nano, Manipal University, Jaipur, 24-25 Oct. 2015.
Benjamin Hudson Baby, V. M. Vaisakh and D. Bharathi Mohan, Fabrication and phase characterization study of SnS Thin Films under controlled sulphur deposition temperature , Recent Advances in Nanoscience and Nanotechnology (RAINSAT-2015), Sathyabama University, Chennai, 08-10, July, 2015. Materials Today: Proceedings, 3(6) 2077-2084, 2016
Anil Kumar Pal, M.T.Abhaya and D. Bharathi Mohan, SERS detection of D-glucose on ultra thin Ag cu films through tuning surface plasmon resonance, Recent Advances in Nanoscience and Nanotechnology (RAINSAT-2015), Sathyabama University, Chennai, 08-10, July, 2015.
Benjamin Hudson Baby and D. Bharathi Mohan, Raman analysis of SnS nanoparticles synthesized by CTAB assisted polyol method, International symposium on semiconductor materials and devices, ISSMD-3, Anna University, Chennai, 02-05 Feb, 2015.
Benjamin Hudson Baby and D. Bharathi Mohan, Raman analysis of SnS particles synthesized by PVP assisted polyol method, AIP Conf. Proc. 1665, 050171 (2015), Solid State Physics Symposium-2014, VIT University, Vellore, India, Dec. 16-20, 2014.
Anil Kumar Pal and D. Bharathi Mohan, Study of NBE emission enhancement on ZnO Nanorods by changing the surface property of ulra-thin Ag interlayer, IEEE Explore, Page No.1-4, DOI:10.1109/ICEmElec.2014.7151155, ISBN: 978-1-4673-6527-7, 2nd IEEE international conference on Emerging Electronics, Indian Institute of Science, Bangalore, 3-6 Dec 2014.
D. Bharathi Mohan, Fabrication of plasmonically active Ag thin films in the region of quasi-amorphous to nanocrystalline and its application towards SERS, ICONSEA-2014, JNTU, Hyderabad, 26-28 July 2014, ISBN: 978-81-924726-2-1. Materials Today: Proceedings, 2(9) 4436-4441, 2015.
Anil Kumar Pal and D. Bharathi Mohan, The study of surface plasmon enhanced emission of ZnO nanorods on plasmonic Ag nanorod arrays, ICONSEA-2014, JNTU, Hyderabad, 26-28, 2014, Materials Today: Proceedings, 2(9) 4407-4412, 2015.
Anil Kumar Pal and D. Bharathi Mohan, ZnO/Ag Composite Nanorod Arrays for Surface-Plasmon-Enhanced Emission Study, AIP Con. Proc., 1591 (982-984) 2014.

Anil Kumar Pal and D. Bharathi Mohan, ZnO/Ag Composite Nanorod Arrays for Surface-Plasmon-Enhanced Emission Study, DAE-SSPS, Thappar University, Patiala, 17-21, Dec. 2013.
Anil Kumar Pal and D. Bharathi Mohan, Surface Plasmon and Exciton Interaction in ZnO/Ag Nanocomposite Structure, IUMRS-ICA, IISc, Bangalore, 16-20, Dec. 2013.
Anil Kumar Pal and D. Bharathi Mohan, NANOHARNESS AND ADHESION OF TiN-(IF-WS2) NANOCOMPOSITE COATING DEPOSITED BY A HYBRID DC MAGNETRON SPUTTERING AND NANOCLUSTER GUN SYSTEM, ICANN, IIT Guwahati, 8-10, Dec. 2013.
Anil Kumar Pal and D. Bharathi Mohan, Fabrication and Characterization Studies of Silver Nanocubes based Surface Enhanced Raman Spectroscopy Substrate, National Conference on Advanced Materials & Applications- NCAMA2013, NIT Trichy, 4-5, Apr. 2013.
P. S. Behra, D. Rajesh, C. S. Sunandana and D. Bharathi Mohan, Exciton Transitions in CuInS₂ Nanoparticles at Room Temperature, National Seminar on Nanoscience, Nanoengineering and Applications, JNTU, Hyderabad, April 27-28, 2012.
P. S. Behra and D. Bharathi Mohan, Defects induced Exciton Transitions in CuInS2 Nanoparticles, International Conference and Workshop on Nanostructured Ceramics and other nanomaterials, University of Delhi, March 13-16, 2012.
D. Bharathi Mohan, NANOHARNESS AND ADHESION OF TiN-(IF-WS2) NANOCOMPOSITE COATING DEPOSITED BY A HYBRID DC MAGNETRON SPUTTERING AND NANOCLUSTER GUN SYSTEM, ICANN, IIT Guwahati, 8-10, Dec. 2011.
N.M. Figueiredo, D. Bharathi Mohan, F. Vaz, L. Cunha and A. Cavaleiro, Optical properties of sputter deposited WO3 films doped with Au nanoparticles, European Conference on Nano Films (ECNF 2010), Liege, Belgium, March 22-25, 2010.
D. Bharathi Mohan and C. S. Sunandana, Phase Transition of AgI-CuI Nanosystem in Aniya-Ichihara’s theory, DAE-SSPS 2010, Manipal University, Manipal, India, Dec 26-30, 2010.
Nuno Figueiredo, Filipe Vaz, Luís Cunha, Marc Torrell, Bharathi Mohan, João Oliveira, Cristina Louro, Albano Cavaleiro, Au-Al2O3 thin films for optical applications by reactive sputtering, PSE 2010, Garmisch, Germany, September 2010.
F. Penayo, D. Bharathi Mohan, T. Polcar and A. Cavaleiro, Sputtering of Alumina coatings using water as reactive liquid, Innovations in Thin Film Processing and Characterization (ITFPC), Nancy, France, Nov. 2009.
D. Bharathi Mohan, T. Polcar, C. S. Sandu and A. Cavaleiro, Tribological behaviour of TiN-WS2 nanocomposite coatings, Innovations in Thin Film Processing and Characterization (ITFPC), Nancy, France, Nov. 2009.
D. Bharathi Mohan, Wear mechanisms in TiN-WS2 nanocomposite coatings: a FIB-TEM analysis, Joint congress of the Portuguese and Spanish Microscopy Societies, 16th-19th June, 2009, Spain.
D. Bharathi Mohan and A. Cavaleiro, Experimental Development and Deposition of TiN-WS2 nanocomposite films by a hybrid dc magnetron sputtering and cluster gun technique, RIVA 7, Lisbon, Portugal, June 2008.
D. Bharathi Mohan and A. Cavaleiro, Deposition of TiN-WS2 nanocomposite coatings by a hybrid process: Sputtering+Nanocluster gun, PSE 2008, Garmisch, Germany, September 2008.
M. Gnanavel, D. Bharathi Mohan and C. S. Sunandana, Study of Plasmons in Ag thin films, PIERS 2008, Hangzhou, China.
D. Bharathi Mohan and C. S. Sunandana, Plasmons and Excitons in ultra thin Ag and AgI films, Nanomeeting 2007, Belarusian State University of Informatics and Radioelectronics, Minsk, Belarus, May 24-28, 2007.
D. Bharathi Mohan and C. S. Sunandana, Structure, Optical Absorption and Photoluminescence Studies on Beta-AgI Nanocrystals grown on Ag/Sn Bilayers, Photonics 2006, University of Hyderabad, Hyderabad, India, December 2006.
D. Bharathi Mohan and C. S. Sunandana, Iodization of RF sputtered Ag thin films reveals volume plasmon-exciton ‘transition’, Nano2006, Indian Institute of Science, Bangalore, India, August 20-25, 2006.
D. Bharathi Mohan and C. S. Sunandana, Phase transition in mechanochemically synthesized AgI-CuI nanocrystals in the Aniya-Ichihara theory, 10th Asian Conference on Solid State Ionics, Kandy, Srilanka, 12-16 June, 2006.
V. Shivaji Reddy, D. Bharathi Mohan and C.S. Sunandana, AgI nanocrystal growth on RF-Magnetron Sputtered Ag thin films, Nanomeeting 2005, Belarusian State University of Informatics and Radioelectronics, Minsk, Belarus, May 24-28, 2005.
D. Bharathi Mohan and C. S. Sunandana, Iodization of RF sputtered Ag thin films reveals volume plasmon-exciton ‘transition’, Material Research Society (MRS), Boston, MA, November 27-30, 2005.
C.S. Sunandana, D. Bharathi Mohan and V. Shivaji Reddy, Optically Monitored AgI Nanoparticle Growth in Al doped AgI thin films, Material Research Society of Singapore (ICMAT), Singapore, 3-8 July, 2005.
D. Bharathi Mohan and C.S. Sunandana, EPR of phase transition in nanophase AgI and (Ag,Cu)I, 4th Asia Pacific EPR/ESR Symposium, Indian Institute of Science, Bangalore, India, November 21-25, 2004.
D. Bharathi Mohan and C. S. Sunandana, Preparation and DC-Electronic Conductivity of AgI-CuI Nanophase Solid Solutions, Seminar on Recent Trends in Nano-Material Science, B. M. BIRLA Science Center, Hyderabad, India, 26th Augest 2006.
V. Shivaji Reddy, D. Bharathi Mohan and C.S. Sunandana, Effect of process-induced disorder on AgI nanoparticle growth in Ag(Al) and Ag thin films, Memsnano, Indian Institute of Technology, Kharagpur, India, December, 20-22 2005.
D. Bharathi Mohan and C.S. Sunandana, Studies on the Formation and DC- Electronic Conductivity of AgI-CuI Nano-Phase Solid Solutions, accepted for the 6th National conference on Solid State Ionics, Jadavpur University, Kolkata, India, October 5-7, 2004.
D. Bharathi Mohan and C.S.Sunandana, Phase Transitions and Electronic conduction in Nanocrystalline Ag0.85Cu0.15I and Cu0.85Ag0.15I, 50th DAE-Solid State Symposium, Jiwaji University, Gwalior, India, December 26-30, 2003.
D. Bharathi Mohan and C.S.Sunandana, Cu-Stabilized Gamma-AgI Nanoparticles by mechanical alloying, 49th DAE-Solid State Physics Symposium, Punjab University, Chandigarh, India, December 26-30, 2002.
S.N. Kaul, C. Bansal, C.S.Sunandana, D. Bharathi Mohan etal, Study on Nanomaterials, National Review and Co-ordination meeting on Nanoscience and Nanotechonology, Hyderabad, India, February 21-23, 2007.

Photos
KAIST, South Korea

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