Dr Om Prakash Sinha

Acting Director & Head AINT

Amity Institute of Nano Technology
 
  • Academic Area

    Nano Device and Technology

    Nano Materials

    Material Science

    Applied Physics

    Pure Physics

    PhD-Science & Technology

    Solar and Alternative Energy

    Engineering Sciences

  • Teaching Interests

    Semiconductor Nano structures, Quantum Concepts of Nanostructures, Properties of Nanomaterials, Nanomagnetism, Nanoelectronics, Design and Simulations of Nanomaterials, Advanced Nanomaterials,
  • Qualifications

    Doctorate : Ph.D.(Semiconductor Physics)-2001,B.H.U., VARANASI

  • Experience

    01 Sep 2005 - Present
    Acting Director & Head AINT,
    Amity Institute of Nano Technology

    01 Sep 2005 - 24 Jul 2014
    ASSOCIATE PROFESSOR,
    AMITY UNIVERSITY UTTAR PRADESH,
    SECTOR-125, EXPRESS HIGHWAY, NOIDA

    01 Aug 2009 - 01 Nov 2009
    POST DOCTORAL RESEARCHER:,
    ASTRaL, Lappeenranta University of Technology (Mikkeli Unit), Mikkeli, Finland,
    Mikkeli, Finland

    01 Jun 2009 - 01 Aug 2009
    GUEST SCIENTIST,
    Institute of Ion Beam Physics and Materials Research, Forschungszentrum Dresden-Rossendorf, Dresden,,
    Institute of Ion Beam Physics and Materials Research,FZD, Dresden,GERMANY

    29 May 2008 - 11 Sep 2008
    MARIE CURIE FELLOW,
    Institute of Physics, Jagiellonian University, KRAKOW, POLAND,
    KRAKOW, POLAND

    08 Feb 2007 - 09 Aug 2007
    MARIE CURIE FELLOW,
    Institute of Physics, Jagiellonian University, KRAKOW, POLAND ,
    KRAKOW, POLAND

    01 Aug 2004 - 31 Aug 2005
    FACULTY MEMBER(PHYSICS),
    ICFAI UNIVERSITY, DELHRADUN,


    01 Sep 2003 - 23 Aug 2004
    POST - DOCTORAL FELLOW,
    INSTITUTE OF PHYSICS, BHUBANESWAR,


    01 Apr 2002 - 01 Sep 2003
    RESEARCH ASSOCIATE,
    IUC-DAEF, INDORE,


    01 Apr 2000 - 01 Apr 2002
    SRF,
    CSIR, NEW DELHI,


  • Research Interests

    Organic Light Emitting Diodes, Organic Solar Cells, Solar Cell, Carbon based materials, Semiconductor Nanostructures, Simulation of Nanomaterial, Application of nanomaterial in devices.
  • Publications

    Micro Cracks in ~100 MeV Si7+ Ion irradiated p-Silicon Surfaces ,
    WORLD SCIENTIFIC

    Evolution of ripple morphology on Si(100) by 60 keV argon ions ,
    ELSEVIER

    Nanostructures on GaAs surfaces due to 60 keV Ar+-ion beam sputtering ,
    ELSEVIER

    Synthesis and Characterization of semiconductor nano-crystallites dispersed in PEO ,
    WORLD SCIENTIFIC

    High Energy Heavy Ion Irradiations in Semiconductors ,
    Elsevier

    AFM Study of Swift Gold Ion Irradiated Silicon ,
    Elsevier

    In-Situ I-V Study of Swift (~100MeV) O6+ Ion Irradiated Pd/ n-Si Devices ,
    IOP Science

    AFM Studies of Swift (~100MeV) Heavy Ions Irradiated Si and GaAs Surfaces ,
    Elsevier

    Evidence of Plastic Flow and Recrystalization Phenomena in Swift (~100MeV) Si7+ ion irradiated Silicon ,
    Elsevier

    Micro Cracks in ~100 MeV Si7+ Ion irradiated p-Silicon Surfaces ,
    World Scientific

    Electrical and XPS studies of 100 MeV Si7+ ion irradiated Pd/n-GaAs devices ,
    Elsevier

    Nano-Scale surface modifications in Semiconductors ,
    ICFAI

    Swift heavy ion induced epitaxial crystallization of buried Si3N4 layer ,
    American Institute of Physics

    MeV heavy ion beam induced epitaxial crystallization of buried Si3N4 layer ,
    Elsevier

    Role of Electronic and Nuclear Energy Losses in Swift Heavy Ion Beam Induced epitaxial crystallization of buried Si3N4 layer ,
    Elsevier

    Surface Modification by Swift (~100 MeV) Si7+ and Au7+ Ions Irradiation in n-GaAs ,
    Elsevier

    MeV Heavy Ion Induced Recrystallization of buried Si3N4 Layer: Role of Energy Loss ,
    American Institute of Physics

    Recrystallization of ion-irradiated germanium due to intense electronic excitation ,
    American Institute of Physics

    Nanometer-Scale Patterning of Alkali Halide Surfaces by Ion Bombardment ,
    Elsevier

    Nanometer-Scale Surface Modification of KBr(001) Single Crystal by Ar Ion Bombardment ,
    Elsevier

    Creating surface nanostructures in GaAs by MeV Au2+ ions ,
    Elsevier

    Swift Heavy Ion Beam-induced Recrystallisation of Buried Silicon Nitride Layer (Review Paper) ,
    DRDO

    Temperature dependent surface modification of InSb(001) crystal by low-energy ion bombardment ,
    Elsevier

    Synthesis and Characterization of semiconductor nano-crystallites dispersed in PEO ,
    World Scientific

    Nanostructures on GaAs surfaces due to 60 keV Ar+-ion beam sputtering ,
    Elsevier

    Evolution of ripple morphology on Si(100) by 60 keV argon ions ,
    Elsevier

    Studies on morphological and optoelectronic properties of MEH-CN-PPV:TiO2 nanocomposites ,
    Elsevier

    Surface Modified ZnO Nanoparticles: Structure, Photophysics and its Optoelectronic Application ,
    SPRINGER

    Ion Penetration in Materials by High Energy Irradiation ,
    World Scientific

    Cadmium Sulphide Nano-Crystallites: TEM and UV-Visible Absorption Studies ,
    NOVA publications, USA

    I-V and Frequency dependent C-V spectroscopy of swift heavy ions irradiated Pd/n-GaAs devices ,
    ALLIED Sciences

    XPS Study of Cadmium Sulphide nano-crystallites ,
    Narosa

    Arsenic Deficiency in Swift Heavy Ion Irradiated Pd/n-GaAs Devices ,
    Narosa

    A Study on Swift Heavy Ion Induced Modifications in Si and GaAs Surfaces and Pd/n-GaAs Interface ,
    Narosa

    Room temperature synthesis of Al:ZnO quantum dots ,
    SPRINGER

    Room temperature synthesis of Al:ZnO quantum dots ,
    AMITY UNIVERSITY PRESS

    Ions Induced Nanostructures In Si & GaAs : From Surface Nanopattering To Materials Modifications ,
    Lap Lambert Academic Publishing, Germany

    Room temperature synthesis of Al:ZnO quantum dots ,
    SPRINGER

    Ab-initio study of napthelene based conducting polymer ,
    American Institute of Physics, AIP Conference Proceedings

    Application of 2D-MoO3 nano-flakes in Organic Light Emitting Diodes: Effect of Semiconductor to Metal Transition with Irradiation ,
    RSC

    Physically cross-linked pH-responsive hydrogels with tunable formulations for controlled drug delivery ,
    RSC Advances

    Quenching of defect luminescence by Al doping in ZnO quantum dots ,
    Advance Science Letter (American Scientific Publishers)

    Controlled Nano patterning & Modifications of Materials by Energetic Ions ,
    AIP Conference Proceedings

    Bandgap Tuning of SWCNT (5, 5) Through Boron Doping: Ab-Initio Analysis ,
    American Scientific Publishers

    Large Area Fabrication of Semiconducting Phosphorene by Langmuir-Blodgett Assembly ,
    Nature

  • Projects

    1. DEVELOPMENT OF SEMICONDUCTOR NANOPATICLES- CONDUCTING POLYMER COMPOSITES FOR OLED’S APPLICATIONS(NPL)
    Semiconductor Nano particles - Polymer Nano composites for Organic Light Emitting Diodes.by (DST)

    REALIZATION OF NOVEL LOW-COST, HIGH OPTICAL ABSORPTION NANOSTRUCTURED DESIGN FOR PHOTOVOLTA(NA)
    SOLAR CELLby (DST)

    Study of origin of d0 magnetism in oxide material intended for spintronic applications(UGC-DAE CSR, Indore)
    origin of d0 magnetism in oxide material intended for spintronic applicationby (UGC-DAE CSR)

    Li / Mg DOPED SEMICONDUCTING METAL OXIDE NANOSTRUCTURES (ZNO, TIO2, ETC) FOR EFFICIENT ORGANIC(IUAC, New Delhi and IOP, Bhubaneswar)
    A study on Li / Mg DOPED SEMICONDUCTING METAL OXIDE NANOSTRUCTURES (ZNO, TIO2, ETC) FOR EFFICIENT ORGANIC LIGHT EMITTING DIODES ( PROJECT SANCTIONED- FUNDING ON HOLD) by (IUAC)

    To study the effect of transition metal ion irradiation on Al:ZnO films(Inter University Accelerator Centor)
    Role of Transition Ion metal in ZnO (User Facility). by (IUAC, New Delhi)

  • Affiliations

    SOLID STATE IONIC Since 01 Mar 1998

    SEMICONDUCTOR SOCIETY OF INDIA Since 01 Apr 2008

    INDIAN SCIENCE CONGRESS Since 01 Apr 2006

  • Activities

    INTERNATIONAL AWARD POST DOCTROAL FELLOW, Advanced Surface Technology Research Laboratory (ASTRaL) Lappeenranta University of Technology, Mikkeli, Finland , 1st August –31st October 2009

    GUEST SCEINTIST, Institute of Ion beam Physics & Material Research, Forschungszentrum Dresden-Rossendorf, Dresden, Germany, 1st June – 31st July 2009

    MARIE CURIE FELLOW (Senior Visiting Research Fellow), Centre for Nanometer Scale Science and Advance Materials (NANOSAM), Department of Physics of Nanostructures & Nanotechnolgy, Institute of Physics, JAGIELLONIAN UNIVERSITY, Krakow, Poland w.e.f. 2007-2008

    2. SENIOR RESEARCH FELLOWSHIP (CSIR)

    3RD BEST POSTER AWARD For Paper Entitled “Synthesis and Characterization of CdS Nanoparticles in PVA and PVK Polymer matrix” by Charu Vashisth, Gayatri Chauhan, V.K. Rai, Ramil Bhardwaj, Ritu Srivastava, M.N. Kamalasanan and O.P. Sinha in International Conference-cum-Workshop on Nanoscience and Nanotechnology, AIT, Gurgaon, India, December 17-21, 2007.

    3rd Prize in Best Poster Award for paper entitled “ Solvothermal synthesis of TiO2 nanoparticles and its application in Organic Light Emitting Diodes” by Punita Singh, Jasleen Bindra, O.P. Sinha, Ritu Srivastava and M.N. Kamalasanan in 3rd National Conference on Nanoscience and Nanotechnology, Jointly Organised by Amity University,Uttar Pradesh, Lucknow Campus and Departmetn of Physics, Lucknow University, Luknow, India, December 21-23, 2010.

    Surface Potential Measurement s of Modified Interfaces in OLED’s Shashank Mathur, Ritu Srivastava, M.N. Kamalasanan and O.P. Sinha National Symposium on Recent Advances in Nanoscience, Engineering & Technology at ABV- Indian Institute of Information Technology & Managment, Gwalior, India Nov 19-20, 2011. ( WINNER OF 1ST BEST POSTER AWARD)

    Session Chairman in 17th International Workshop on Physics of Semiconductor Devices, Amity University, UP, Nodia, Dec 09-13, 2013

    Resource Person in 17th International Workshop on Physics of Semiconductor Devices, Amity University, UP, Nodia, Dec 09-13, 2013

    “Session Chairman “ in Symposium on Current Trends in Nano Science & Technology (CTNT-09) at ABV- Indian Institute of Information Technology, Gwalior, India, 16th Jan, 2009

    “Session Secretary” in Sixth Asian Conference on Solid State Ionics, Suraj Kund, New Delhi. Nov. 29 - Dec.04, 1998.

    Resource Person in Research Training Workshop on Solid State Ionics, B.H.U., Varanasi, Nov. 22-28, 1998

    ? Resource Person in Sixth Asian Conference on Solid State Ionics, Suraj Kund, New Delhi, Nov. 29-Dec. 04, 1998

    INVITED TALK / TALK DELIVERED DELIVERED : 1. Swift heavy ions induced modification in semiconductors and its based devices At Centre of Excellence, Marian Smoluchowski Institute of Physics, Jagiellonian University, Krakow, Poland 20.02.2007

    2. Nano-Scale patterning in III-V Semiconductors and Alkali Halide System by Ar+ ions In MCIA- 2008, Institute of Physics, Bhubaneswar, India 31.03.2008-04.04.2008

    3. Nano-patterning in alkali halide and III-V semiconductors system by energetic Ar+ ions In Nano-Engineering and Nanomaterials - International Session of the Marie Curie Fellows NEED, NANO 2008, , Institute of Physics, Jagiellonian University, Krakow, Poland. 25-28 June, 2008

    4. Semiconductor Nanostructures by Energetic Ions In Nano Materials: Benefits, Hazards & safety Measures organized by Centre for Fire, Environment and Explosive Safety (CFEES), DRDO, New Delhi, 27th August 2008.

    5. Nanostructring By Energetic Ions At LNM Institute of Information Technology (A Deemed University), Rupa ki Nagal, JAIPUR, Rajasthan, India on 03.10.2008

    6. Nanopatterning in Semiconductors and Alkali Halide system by Ion Beam In Symposium on Current Trends in Nano Science & Technology (CTNT-09) at ABV- Indian Institute of Information Technology, Gwalior, India15th - 16th Jan, 2009

    7. Nano-Scale Surface Patterning in Compound Semiconductors and Alkali Halide System by Energetic Ions In National Symposium on Nanoscale Science and Technology, M.S. College, Saharanpur, Uttaranchal February 21-22, 2009,

    8. Energetic Ions: A Tool For Control Growth Of Nanostructures And Material Modifications At Advance Surface Technology and Research Laboratory, Lappeenranta University of Technology, Mikkeli, Finland , 15.09.

    9. Nanostructured Materials: Using Energetic Ion Beams as A Tool For Nanotechnology At Mikkeli University Consortium, Mikkeli, Finland, 29.10.2009

    10. Energetic Ion Beams: A Tool for Nanotechnology at Institute Of Physics, Bhubaneswar, India, June 28, 2010.

    11. Energetic Ion Beam: A Tool for Controlled Nanotechnology at Jaypee University of Engg. & Technology, Guna, India in National Conference on Recent Advances in Materials Science & Engineering: A Multidisciplinary Approach, October 23-24, 2010

    12. Energetic Ion Beams: A Tool for Nano-patterning & Modifications of Materials at Indraprastha International Conclave on Nano Science & Technology" at Guru Gobind Singh Indraprastha University, Dwarka, New Delhi, from November 16 -17th, 2010

    13. Nano - patterning in Semiconductors and Alkali Halide System by energetic ion beam at Institute of Physics Bhubaneswar, India in International Conference on Ion Induced Nanopattering in Materials , February 6-10, 2011.

    14. Role of inorganic nanostructures in Organic Solar Cells at ITS Engineering College, Greater Noida in National Workshop on Solar Photovoltaic Components, Systems and Design, March 25-26, 2011

    15. Semiconductor nanoparticles-Polymer composites for OLED's applications at National Conference on Recent Trends in Materials and Devices ((RTMD- 2011), May 19-20, 2011, Amity University, U.P., NOIDA, India

    16. Organic Solar Cells with Embedded Inorganic Nanostructures: A future Prospective , National Symposium on Recent Advances in Nanoscience, Engineering & Technology at ABV- Indian Institute of Information Technology & Managment, Gwalior, India Nov 19-20, 2011.

    17. Nanotechnology and its application in Solar Cell at Symposium on Nanotechnology and its applications at Delhi Institute of Technology and Management, Gannour, Harayana, India, Marh 31, 2012.

    18. Role of Nanotechnology in Solid State Lighting: Seminar on Nanotechnology, Indian Institute of Metal, Delhi , May 05, 2012

    19. Energetic Ion Beams: A promising Tool for both Top Down and Bottom up approaches to Nano-Fabrications & Modifications of Materials at International Workshop on Physics of Semiconductor Devices, Amity University UP, Nodia Dec 09-2013, 2013

    20. Ion beam induced controlled nanofabrication, National Workshop on ion beam based materials engineering, Kurukshetra University Kurukshetra, March 11-12, 2014

    21. The wonder world of Nanoscience & nano technology , National conference on Recent Developments in Physics” at SD(PG) college, Panipat , Harayana , March 29,2014

    22. Role of nanomaterials in Organic Light Emitting Diodes (OLED’s), National conference on Emerging Trends in Materials and Processing Technology, NSMPT-2014” , AMITY UNIV., M.P., Gwalior, India, 11-12 November 2014

    23. Solid State Lightning: From Laboratory to Nobel, International E-Workshop/Conference on Computational Condensed Matter Physics and Materials Science “IWCCMP-2014”from 25-30 November, 2014, ABV-Indian Institute of Information Technology and Management, GWALIOR, M.P., INDIA

    24.Metal Oxides Nanostructures for efficient organic light emitting diodes, "4th International Conference on Current Developments in Atomic, Molecular, Nano and Optical Physics with applications (CDAMOP 2015)" on March 11-14 2015, Delhi University, Delhi, India.

    24. Role of Nanotechnology in Improved Performance of Organic Solar Cells, National Seminar on Organic Solar Cell-2015” (NSOSC-2015). August 30-31, 2015. Banasthali University, Banasthali-304022, Rajasthan

    25. EXPERT TALK - Solid State Lighting: From Stone Blaze to OLED’s; National Conference on “Physics Industry Interface” NCPII-2015, Department of Physics, Kurukshetra University, Kurukshetra, 02-05 Sept 2015

    26.Organic –Inorganic Semiconductor Hybrid Nanostructures for Solar Energy Harvesting ; 3rd International E-Workshop/Conference on Computational Condensed Matter Physics and Materials Science" IWCCMP-2015 18-22 Oct. 2015, ABV-IIITM, Gwalior

    27.Controlled Nanopatterning & Modifications of Materials by Energetic Ions; 60th DAE-SSPS-2015 Symposium (Diamond Jubilee event) December 21-25, 2015., Amity University UP, Noida, Uttar Pradesh.

    Session Chair : National Conference on “Physics Industry Interface” NCPII-2015, Department of Physics, Kurukshetra University, Kurukshetra, 02-05 Sept 2015.

    In Judge panel for best poster award : National Conference on “Physics Industry Interface” NCPII-2015, Department of Physics, Kurukshetra University, Kurukshetra, 02-05 Sept 2015

  • Patents

    1. PROCESS FOR IMPARTING OR ENHANCING ELECTRICAL CONDUCTIVITY OF POLYMERS WITH SEMICONDUCTOR NANOPARTICLES ,del,India - Complete ( 898/DEL/ 2009 )

    2. EFFICIENT ORGANIC PHOTOVOLTAIC DEVICES USING PHOTOACTIVE GRAPHENE OXIDE, ORGANIC LINKERS AND SEMICONDUCTOR NANOPARTICLES ,del,India - Complete ( 1029/DEL/2012 )

    GRAPHENE BASED CHEMICAL SENSOR FOR THE DETECTION OF TOXIC METAL COMPLEXES IN DRINKING WATER ,del,India - Complete ( 1030/DEL/2012 )

    4. SYNTHESIS OF NANOSTRUCTURED AL-DOPED ZINC OXIDE QUANTUM DOTS BY NOVEL CHEMICAL ROUTE ,del,India - Complete ( 3676/DEL/2012 )

    NOVEL MECHANISM IN A HETROJUNCTION SEMICONDUCTOR PHOTOVOLTAIC SOLAR CELL FOR INCREASED EFFICIENCY AND COST –EFFECTIVENESS ,del,India - Complete ( 3674/DEL/2012 )

    LEBEL FREE DIAGNOSIS OF ALLERGY TO DRUGS USING A POINT OF CARE DEVICES BASED ON MICRO FLUIDIC PLATEFORM ,del,India - Provisional ( 1793/DEL/2013 )

    A NOVEL HAND HELD MICRO-ELECTRODE SENSOR FOR DETECTING FUEL ADULTERATION BASED ON MICRO FLUIDIC PLATFORM ,del,India - Complete ( 2374/DEL/2013 )

    A NOVEL SCALABLE BOTTOM-UP METHOD FOR COST EFFECTIVE AND HIGH YIELD SYNTHESIS OF DOPED CARBON NANO-SHEETS ,del,India - Complete ( /DEL/ 2014 )

    HYDROGELS FOR TRANSDERMAL DRUG DELIVERY AND A METHOD TO MANUFACTURE THE SAME ,DEL,India - Complete ( 1388/DEL/2015 )

    NON MAGNETIC ELEMENTS DOPED SEMICONDUCTING METAL OXIDE MATERIALS AND ITS UTILIZATION IN ORGANIC ELECTRONICS ,DEL,India - Provisional ( 2043/DEL/2015 )

    A SYSTEM AND METHOD FOR LARGE AREA DEPOSITION OF EXFOLIATED BLACK PHOSPHOROUS IN SOLUTION PHASE ,DEL,India - Provisional ( 19968/DEL/2016 )

  • Conferences attended

    National conference on Recent Developments in Physics
    Organized By :SD(PG) college,

    on ion beam based materials engineering
    Organized By :Kurukshetra University Kurukshetra

    Physics of Semiconductor Devices
    Organized By :Amity University UP, Nodia

    Physics of Semiconductor Devices
    Organized By :Amity University UP, Nodia

    Physics of Semiconductor Devices
    Organized By :Amity University UP, Nodia

    Nanotechnology
    Organized By :Indian Institute of Metal, Delhi

    Symposium on Nanotechnology and its applications
    Organized By :Delhi Institute of Technology and Management, Gannour, Harayana, India,

    Recent Advances in Nanoscience, Engineering & Technology
    Organized By :ABV- Indian Institute of Information Technology & Managment, Gwalior, India

    Recent Advances in Nanoscience, Engineering & Technology
    Organized By :ABV- Indian Institute of Information Technology & Managment, Gwalior, India

    Recent Trends in Materials and Devices
    Organized By :Amity University UP, Nodia

    Solar Photovoltaic Components, Systems and Design
    Organized By :ITS Engineering College, Greater Noida

    Ion Induced Nanopattering in Materials
    Organized By :Institute of Physics Bhubaneswar, India

    International Conclave on Nano Science & Technology
    Organized By :Guru Gobind Singh Indraprastha University, Dwarka, New Delhi,

    Recent Advances in Materials Science & Engineering: A Multidisciplinary Approach
    Organized By :Jaypee University of Engg. & Technology, Guna, India

    Ion Induced Nanopattering in Materials
    Organized By :Institute of Physics Bhubaneswar, India

    Nanostructured Materials
    Organized By :Mikkeli University Consortium, Mikkeli, Finland

    National conference on Emerging Trends in Materials and Processing Technology, NSMPT-2014
    Organized By :AMITY UNIV., M.P.,

    International E-Workshop/Conference on Computational Condensed Matter Physics and Materials Science
    Organized By :ABV-Indian Institute of Information Technology and Management

    4th International Conference on Current Developments in Atomic, Molecular, Nano and Optical Physics
    Organized By :Delhi University,

    National Seminar on Organic Solar Cell-2015” (NSOSC-2015)
    Organized By :Banasthali University,

    National Conference on “Physics Industry Interface” NCPII-2015
    Organized By :Department of Physics, Kurukshetra University

    National Conference on “Physics Industry Interface” NCPII-2015
    Organized By :Department of Physics, Kurukshetra University

    3rd International E-Workshop/Conference on Computational Condensed Matter Physics and Materials Scie
    Organized By :ABV-IIITM, Gwalior

    60th DAE-SSPS-2015 Symposium (Diamond Jubilee event)
    Organized By :DAE, BRNS and Amity Univeristy UP

    Recent Trends in Materials and Devices
    Organized By :AIARS, AUUP

  • Short Description

    I am, presently working as Associate Professor in Amity Institute of Nanotechnlogy, Amity Univ., UP, NOIDA,started since 2005. Did my Ph.D. in Physics (2001) from Banaras Hindu University, Varanasi after Master and Bachelor degree from Magadh University, Bodh-Gaya. I have 18 years of experiences for research and teaching mainly (i) MARIE CURIE FELLOW (Senior Visiting Research Fellow), Centre for Nanometer Scale Science and Advance Materials (NANOSAM), Department of Physics of Nanostructures & Nanotechnolgy, Institute of Physics, JAGIELLONIAN UNIVERSITY, Krakow, Poland, 2007-2008 (ii) POST DOCTROAL FELLOW, Advanced Surface Technology Research Laboratory (ASTRaL) Lappeenranta University of Technology, Mikkeli, Finland and GUEST SCEINTIST, Institute of Ion beam Physics & Material Research, Forschungszentrum Dresden-Rossendorf, Dresden, Germany, 2009