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Niladri Sarkar

Professor, Department of Physics,
BITS Pilani, Pilani Campus

Condensed Matter
Department of Physics, Birla Institute of Technology & Science, Pilani- 333031, Rajasthan. India.

Education 

  • B.Sc. (Physics Hons.) Faculty of Science, Banaras Hindu University
  • M.Sc. (Physics) Indian Institute of Technology, Kanpur
  • Ph.D. School of Physical Sciences, Jawaharlal Nehru University, New Delhi 

Courses Taught

Courses in the Current Semester (1 SEM 2024-25)

  • Mechanics, Oscillations & Waves (Lecture & Tutorial)
  • Mathematics III (Lecture & Tutorial)

Courses Taught (Lecture & Tutorial)

  • Electromagnetic Theory I
  • Electromagnetic Theory II 
  • Solid-State Physics
  • Mathematical Physics
  • Quantum Mechanics I
  • Physics & Modeling of Microelectronic Devices
  • Nanoelectronics  and Nanophotonics
  • Electrical Sciences I
  • Computational Physics 

Courses Taught (Tutorials Only)

  • Electronic Devices & Integrated Circuits
  • Analog Electronics
  • Electromagnetic Waves Theory

Lab Courses

  • Physics Lab (1st Year)
  • Modern Physics Lab 

Research Interest

Sponsored Projects

  1. Implications of Inelastic Scattering and Spin Dephasing Mechanisms in Graphene Nano Ribbon-Based Spintronics, Sponsor: CRG-SERB-New Delhi, Duration 3 Years, Grant Amount: Rs 20,91,650/- , P.I: Niladri Sarkar, Co-P.I: Navneet Gupta, (Status: Ongoing-2024---)
  2. Design, fabrication and testing of advanced 2D materials-based field effect transistors supported by DFT-NEGF exploration, Sponsor: CREST-BITS-Pilani, Duration: 2 Years, Grant Amount: Rs 20,00,000/-, Investigators: Arnab Hazra and Niladri Sarkar (Status: Ongoing-2023---)
  3. Investigation of Elastic and Inelastic Dephasing in Carbon Nanotube FET, Sponsor: SERB-DST-New Delhi, Grant Amount: Rs 18,25,450/- (Status: Project Completed in Mar 2022), P.I: Niladri Sarkar, Co-P.I: Navneet Gupta
  4. Study on Electronic Transport Behaviour of Carbon Nanotube Based Field Effect Transistors (CNTFETs), Sponsor: DRDO New-Delhi, Duration: 3 Years, Grant Amount: Rs 20,69,000/-(Status: Project Completed in Dec 2020), P.I: Navneet Gupta, Co-P.I: Niladri Sarkar
  5. Electromagnetic Characterization of Three Dimensional Targets with Plasma Cladding for Stealth Technology Using Recursive Convolution Finite Difference Time Domain Method, sponsored by BITS-PILANI, Grant Amount: Rs 520,000/- (Project Completed in May 2015) P.I: Niladri Sarkar
  6. Study of Indus Valley Scripts Through Linguistic and Markov Chain Methods, Sponsored by INSA-New-Delhi, Grant Amount: Rs 620,000/-  (Project Completed in July -2015) P.I: Niladri Sarkar

Publications

Peer-reviewed journals and conference proceedings

  • “Effect of Line Defects on the Band Structures, Local Density of States, and the Landau Levels for Armchair Graphene Nanoribbons in the Quantum Hall Effect Regime”, Aruna Gupta and Niladri Sarkar, Journal of Electronic Materials 53:979–990 (2023)
  • "A Tutorial on the NEGF Method for Electron Transport in Devices and Defective Materials",  Akansha Thakur and Niladri Sarkar, The European Physical Journal B, 96:113 (2023)
  • "Practical Thermal and Structural Simulations for Performance Improvement of Electron Gun in TWTs", Suneeta Arya, Vishant Gehlaut, A Mercy Latha, Niladri Sarkar, and S. K. Ghosh, IEEE Transactions on Plasma Science, 50(12), 4843 (2022)
  • "Efficiency Enhancement of Multi-stage Depressed Collector using an External Magnet in TWTs", Suneeta Arya, A Mercy Latha, Vishant Gehlaut, Pawan Pareek, C P Mistry, A R Choudhary, Niladri Sarkar, and S. K. Ghosh, IEEE Electron Device Letters, 43 (11), 1989 (2022)
  • "An Investigation of the Role of Line Defects on the Transport Properties of Armchair Graphene Nano Ribbons", Aruna Gupta and Niladri Sarkar, Appl. Phys A 128,434 (2022)
  • "Investigation  of the role of defects on channel density profiles and their effect on the output characteristics of a nanowire FET", Cariappa K S and Niladri Sarkar, Engineering Research Express, IOP (UK), Vol 3, 045061 (2021)
  • "Exploiting Hyperbolic Metamaterial as a substrate for Graphene Surface Plasmonic Cherenkov THz radiation source", Nalini Pareek, Niladri Sarkarand Anirban Bera, Appl. Phys. A, 126, 882 (2020)
  • "Effect of size quantization and quantum capacitance on the threshold voltage of a 2-D nanoscale dual gate MOSFET", Abhinav Sundar and Niladri Sarkar, Engineering Research Express, IOP (UK), Vol 2, 035029 (2020)
  • "Application of the Density Matrix Formalism for Obtaining the Channel Density of a Dual Gate Nano-Scale Ultra Thin MOSFET and its Comparison with the Semi-Classical Approach", Surender Pratap and Niladri Sarkar, International Journal of Nanoscience (World Scientific, Singapore), Vol. 19, No 6, 2050010 (2020)
  • "Study of Dephasing Mechanisms on the Potential Profile of a Nanowire FET", Niladri Sarkar, 1, (2019), 25021 Engineering Research Express, IOP (UK) 
  • "Understanding the Effect  of Inelastic Electron-Phonon Scattering and Channel Inhomogeneities on a Nanowire FET", Niladri Sarkar, 114 (2018), pp. 183-191 Superlattices and Microstructures-Elsevier-U.K
  • "Understanding the Overall Shape of the Output Characteristics from the Change in the Channel Potential Profile for Nanowire FET", Niladri Sarkar, 101 (2017), pp. 191-199 Superlattices and Microstructures-Elsevier-U.K
  • "Study of  the Indus Valley Scripts Through Linguistics and Markov Chain Methods", Indian Journal of History of Science, Niladri Sarkar,  51.2.1 292-302 (2016), Indian National Science Academy, New-Delhi
  • "Temperature dependent band gap shrinkage in GaN: Role of electron–phonon interaction", Niladri Sarkar and Subhasis Ghosh, Solid State Communications 149 (2009) 1288–1291
  • "Effect of disorder on the electrical and superconducting properties in Ln1.2Ba1.2Ca0.6Cu3 O7+δ (Ln = La, Nd, Sm) and La1.2−x Ndx Ba1.2Ca0.6Cu3 O7+δ",  S L Samal , S E Lofland , K V Ramanujachary , N Sarkar, S Ghosh, and A K Ganguli1, Supercond. Sci. Technol. 21 (2008) 085007 (7pp)
  • "The temperature dependence of the band gap shrinkage due to the electron–phonon interaction in Alx Ga1−x As", Niladri Sarkar and Subhasis Ghosh,  J. Phys.: Condens. Matter 18 (2006) 1687–1694
  • "Grain-boundary-controlled current transport in copper phthalocyanine", Ajit Kumar Mahapatro, Niladri Sarkar, and Subhasis Ghosh, Appl. Phys. Lett. 88, 162110 (2006)
  • "Zinc oxalate nanorods: a convenient precursor to uniform nanoparticles of ZnO", Tokeer Ahmad, Sonalika Vaidya, Niladri Sarkar, Subhasis Ghosh and Ashok K Ganguli, Nanotechnology 17 (2006) 1236–1240
  • "Photoluminescence spectroscopy of many-body effects in heavily doped AlxGa1−xAs", Niladri Sarkarand Subhasis Ghosh, PHYSICAL REVIEW B 71 (2005), 233204
  • "The role of the grain boundary on persistent photoconductivity in GaN", Niladri Sarkar, Subhabrata Dhar and Subhasis Ghosh,  Phys.: Condens. Matter15 7325 (2003)
  • "Photoinduced Suppression of Superconductivity in Bi2Sr2Ca2Cu3O10+δ", Subhasis Ghosh and Niladri Sarkar, arXiv preprint cond-mat/0604218       
  •  "Size Quantization Effect in the Channel of a 2D Nano Scale Dual Gate MOSFET", Abhinav Sundar and Niladri Sarkar, AIP Conference Proceedings 2220(1), 020134 (2020)
  • "Recursive Convolution Finite Difference Time Domain Method(RC-FDTD) on Three Dimensional Conducting Targets with Plasma Sheath For Achieving Low Observable Stealth Technology", Niladri Sarkar, National Exhibition on Aerospace & Defense Mechanisms, ARMS-2018, Hyderabad
  • "Transport properties  and sub-band modulation of the SWCNT  Based  Nano-Scale Transistors",Surender Pratap and Niladri Sarkar, Springer Proceedings of Physics Vol. 215, (2019) pp. 155-162
  • "Investigation of the Effect of Scattering Centers on Low Dimensional Nanowire Channel ", Cariappa K S, Raja Shukla and Niladri Sarkar, AIP Conf. Proc. 1953, 140065 (2018)
  • "Studying the Conductance and Transport in Low Dimensional Graphene Nano-Ribbon Under Ballistic Regime", Surender Pratap and Niladri Sarkar, AIP Conf. Proc. 1728, 020267 (2016)
  • "Application of Self-Consistent NEGF Procedure to Study the Coherent Transport with Phase Breaking Scattering in Low Dimensional Systems", Surender Pratap and Niladri Sarkar, AIP Conf. Proc. 1724, 020096 (2016)
  • "PIC-FDTD code for beam-wave interaction analysis in rippled wall slow wave structure", Pareek, N.; Prakash, R; Pal, U.N.; Kumar, N., Sarkar, N.,2015 IEEE International Conference on Plasma Sciences (ICOPS), Ankara, 24-28th May 2015, Published by IEEE: DOI: 10.1109/Plasma.2015.7179651
  • "Application of Self-Consistent Quantum Method for Simulating the Size Quantization Effect in the channel of a Dual-Gate Nano-Scale MOSFET",  Surender Pratap and Niladri Sarkar, AIP Conf. Proc. 1665, 120036 (2015)
  • "Suppression superconductivity in Bi-2223 by light", Niladri Sarkar and Subhasis Ghosh Proceedings of the DAE solid state physics symposium. V. 50 (2005)
  • "Band Gap Shrinkage due to Many Body Effect in GaN", Niladri Sarkar and Subhasis Ghosh Proceedings of the IWPSD 2005

PhD Students

Current Ph.D. Students

  •  Ms. Aruna Gupta (DST/Institute SRF)
  •  Ms. Suneeta Arya (Jointly with CEERI Pilani)
  •  Ms.  Akansha Thakur (Institute Research Fellow)
  • Mr. Vikram Singh Rawat (Jointly with CEERI Pilani)
  • Ms. Bharti Dua (Institute Research Fellow) 
  • Ms. Pragya Choudhary (JRF-DST Sponsored)

  Former Ph.D. students

  •  Dr. Surender Pratap, Title of PhD Thesis: Study of Low Dimensional Systems with NEGF and RMT Approach, Presently: Assistant Professor at the Physics       Dept. of the "Central University of Himachal Pradesh
  • Dr  Nalini Pareek, Title of PhD Thesis: Study of Surface Plasmonic THz Generation, PhD Supervision was jointly carried out with Dr Anirban Bera of CEERI Pilani,Presently: Senior Scientist at CSIR-Central Scientific Instrument Organization Chandigarh