Physics: Faculty Members

Faculty Members

Dr. Pranayee Datta

Professor

ACADEMIC QUALIFICATION:  M.Sc., Ph.D.

SPECIALIZATION: Cosmic Radiation Physics, Nanoscience & Technology

RESEARCH BACKGROUND:

International Conference Attended:

European Advanced Material Congress, Sweden, 2018 (Invited Speaker)

BRICKS International Symposium on Energy, Materials & Innovation, University of South Africa, Pretoria, South Africa, 2013 (Invited Speaker)

European Cosmic Ray Conference, Moscow, Russia, 2012

Dr. Ranjita Devi

Associate Professor

Dr. Sanchita Roy

Assistant Professor

ACADEMIC QUALIFICATION: M.Sc., B.Ed. Ph.D.

SPECIALIZATION: Optoelectronics & Photonics; Biophotonics; Laser Physics; Nanoscience & Nanotechnology

RESEARCH BACKGROUND:

  • Investigation on small particles of different origin by using light scattering technique based on experimentation and simulation. Design, fabrication and development of novel instruments for optical measurement for characterization of particulate matter. Fabrication of different types of nanoparticles and their analysis using light scattering techniques. Data analysis using scattering theories and simulation.
  • Worked as Principal Investigator in the DST, Ministry of Science and Technology, India, supported project under the Women-Scientist –A scheme during 2008-2012.
  • Dayawati Rastogi award” for Best Research paper presentation in the National conference of Laser and Optical Sciences held at DHSK College, Dibrugarh in 2010.
  • 2018 onwards: Supervising Research scholar Shri Haydar Hussain Mollah in the Ph.D course.
  • 2019 onwards: Supervising Research scholar Shri Abu Bakar Siddique in the Ph.D course.
  • 2017-2019: Supervised 07 students in M.Sc project and dissertation.
  • 2016-2018: Supervised 16 students in M.Sc project and dissertation.

Dr. Mayuri Devee

Assistant Professors

ACADEMIC QUALIFICATION: M.Sc., Ph.D.

SPECIALIZATION: High Energy Physics, Nuclear and Particle Physics, Condensed Matter Physics

RESEARCH BACKGROUND:

Areas of interest: High Energy Physics (Phenomenology), Quantum chromodynamics, Higher order QCD corrections, Elementary Particle Physics, Neutrino Physics.

Peer Reviewed Publications: (Impact Factor: EPJC- 4.843, NPB- 3.185, IJP-1.242)

(https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=mayuri+devee&oq=mayu)

  • Effect of shadowing and antishadowing corrections to the evolution of gluon density at small-x, IOP Journal of Physics: Conference Series (Accepted) 2020.
  • Analysis of the small-x behavior of gluon distribution and a search for gluon recombination, Nuclear Physics B 885 (2014) 571–582. Co-Author: K. Sarma.
  • Nonlinear GLR-MQ evolution equation and Q2-evolution of gluon distribution function, European Physical Journal C 74 (2) (2014) 2751. Co-Author: K. Sarma.
  • Evolution of singlet structure functions from DGLAP equation at next-to-next-to-leading order at small-x, European Physical Journal C 72 (6) (2012) 2036. Co-Author: K. Sarma.
  • Solution of singlet Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution equation in next-to-next-to-leading order at small-x, Indian Journal of Physics 86 (2) (2012) 141–144. Co-Authors: Baishya and J. K. Sarma.

Book chapters published:

  • Regge like behaviour of gluon distribution function in the framework of nonlinear GLR-MQ evolution evolution; Basic and Applied Physics: Recent Advances, Narosa Publishing House. ISBN: 978-81-8487-517-1 (2016).
  • Q2 evolution of Gluon distribution predicted by DGLAP equation at NNLO, Recent Trends in Basic Science Researches, ISBN: 978-81-933-69005.

Noteworthy Highlights:

  • Participated as an Invited Member in the XVI Workshop on High Energy Physics Phenomenology held at Indian Institute of Technology, Guwahati during December 1 – 10, 2019.
  • Contributory talk in the “16th International Conference on Topics in Astroparticle and Underground Physics” held at Toyama International Conference Center, Toyama, Japan during September 9-13, 2019.
  • Contributory talk in the “International Conference in Nuclear and Particle Physics” held at Viswa Bharati University, Shantiniketan, Kolkata during February 3-5, 2019.
  • Contributory talk in the 23rd DAE-BRNS International Symposium on High Energy Physics held at IIT, Madras during December 10-14, 2018.
  • Contributory talk in the International Conference on Matter at Extreme Conditions: Then & Now held at Bose Institute, Kolkata during 15 – 17 January, 2014.

Contributory talk in the International Conference on Triggering Discoveries in High Energy Physics at the University of Jammu, Jammu during 9 – 14 September, 2013

Dr. Ritun Chakraborty

Assistant Professor

ACADEMIC QUALIFICATION: M.Sc, Ph.D.

SPECIALIZATION: Nano sciences, Condensed matter physics

RESEARCH BACKGROUND:

Synthesis, characterization and application of nanomaterial’s; Fabrication and conductance measurements of nanostructures

Dr. Hari Prasad Jaishi

Assistant Professor

ACADEMIC QUALIFICATION:  M.Sc, Ph.D.

SPECIALIZATION: Electronics, Geophysics

RESEARCH BACKGROUND:

Continuous monitoring of soil radon and thoron concentration using Solid State Nuclear Track Detectors (SSNTDs) and study of possible correlations with nearby seismic events

Dr. Nitu Borgohain

Assistant Professor

ACADEMIC QUALIFICATION: M.Sc., Ph.D.

SPECIALIZATION: Nonlinear Optics and Photonics & Quantum Optics

RESEARCH BACKGROUND:

Post PhD:

Investigation of linear and nonlinear effects in Quantum Well nanostructures Light-matter interactions in Photonic Crystal Fibers Astronomical Instrumentations

PhD:

Nonlinear optical pulse and beam propagation in quantum well nanostructures (BIT, Mesra)

M.Sc.:

  • Synthesis and Investigation of Structural and Optical properties of Eu2+ doped MgSO4 phosphor (At ISM Dhanbad)
  • Supercapacitors: A promising future of electric power devices and study of conducting polymer based nanocomposite supercapacitors (At VECC, Kolkata)

Google Scholar Link: https://scholar.google.co.in/citations?user=kNhBTmsAAAAJ&hl=en

Dr. Shivani Saxena

Assistant Professor

ACADEMIC QUALIFICATION:  M.Sc, Ph.D.

SPECIALIZATION: Digital Electronics, Solid State Plasma.

RESEARCH BACKGROUND:

Study of Absorption and propagation characteristics of Electro Kinetic Waves in materials (Ferroelectric) with high dielectric constant

Dr. Enamullah

Assistant Professor

ACADEMIC QUALIFICATION: M.Sc., Ph.D.

SPECIALIZATION: Theoretical Condensed Matter Physics

RESEARCH BACKGROUND:

As a Postdoctoral Researcher:

  • Currently my research work is focused on studying the electronic behavior in magnetic/semiconducting materials by means of ab-initio simulations based on Density Functional Theory (DFT) implemented within various simulation packages (e.g. Vienna Ab-initio Simulation Package (VASP) and Quantum ESPRESSO etc.). Our main goal is to design magnetic and semiconducting materials relevant for spintronic, thermoelectric, magnetic random access memory and battery applications.
  • A brief summary of our postdoctoral research outcomes are as follows,
  • First principle study of electronic and magnetic properties of equiatomic quaternary Heusler alloys have been investigated. Simulations predict the signature of halfmetallicity in the systems having highest Curie temperature approximately 866K found in CoFeCrGe system [Phys. Rev. B 92, 224413 (2015)].
  • Effect of intrinsic disorder (e.g. antisite, swap and vacancy) and pressure on electronic structure and magnetism has also been studied in CoFeCrGe and CoMnCrAl systems and found that magnetism and halfmetallicity get affected significantly [Phys. Rev. B 94, 184102 (2016)].
  • Thermoelectric properties of the unreported Bi-based half Heuslers have been studied and found the ZT values lies between ~ 4 – 0.5 at higher temperature [J. Mater. Chem. A 5, 6131 (2017)].
  • Electronic structure and thermoelectric properties of equiatomic of CoFeMnSb Heusler alloy have been investigated using first-principles [J. Alloy. Compd. 742, 903 (2018)].
  • Effect of binary and ternary kind of antisite defects have been simulated in Co2MnSb Heusler alloys and found that the alloy is defect tolerant material against antisite defects [J. Alloy. Compd. 765, 1055 (2018)] .
  • Thermoelectric properties of quaternary Heusler alloy, CoFeTiAl have been investigated and found that the conversion efficiency is 0.62(0.50) for n(p)-type behaviour at 900K [J. Mater. Chem. C 7, 7664 (2019)]
  • Designed and investigated a transition metal doped magnetic material very promising for Magnetic Random Access Memory(MRAM) application (Under Review in J. Phys. Conden. Matter).
  • Our future direction of research would be focused in spintronics, thermoelectrics, topological insulators (TI), magnetic memory and battery applications. We are also focusing the various possibility (e.g. band structure engineering, intrinsic/extrensic doping, defects) to enhance the thermoelectric conversion efficiency.

As a Graduate Researcher:

As a graduate researcher at Indian Institute of Technology Guwahati (IITG), I have studied one of the well known optical phenomenon, Rabi oscillations in graphene considering various modes of optical field[Physica B, 407, 4600(2012)]. Graphene, also known as zero band gap semiconductor, reveals various peculiar properties which differ from the conventional semiconductor e.g. linear band structure near the Dirac points and pseudo spin. Rabi oscillation, a periodic exchange of energy between a two level system (in case of atoms) or two band system (in case of semiconductor) and the applied optical field. It is the oscillation in the population and polarization of carries (with a given wave-vector in case of a band) with a frequency ωR determined by the intensity of externally applied optical field. This frequency ωR is typically much smaller than the optical frequency ω itself. In graphene, we have predicted a new kind of Rabi oscillations (known as anomalous Rabi oscillations in a regime where the frequency of incident optical field is much higher than the frequency corresponding to the particle-hole energy by a new technique asymptotic rotating wave approximations(ARWA)[Physica B 407, 4600 (2012)]. In order to detect such type of oscillations in graphene experimentally, we have suggested a well-known pump-probe technique[Pramana (Indian Academy of Sciences) 82(6), 1085 (2014)]. In the above two references we have considered the optical field a classical but what happen if one choose a quantum field. An anomalous collapse and revival has been occurred along with the quantum Rabi oscillations in presence of quantum field[J. Opt. Soc. Am B 31, 484 (2014)]. This kind of oscillations has been observed in graphene like systems because of the pseudo spin degree of freedom

Devashree Borgohain

Assistant Professor

ACADEMIC QUALIFICATION: M.Tech, M.Sc.

SPECIALIZATION: Plasma Physics, Nuclear Physics, Solar Energy, Renewable Energy

RESEARCH BACKGROUND:

  • 2014-2017: Project on “Development of Neutron Source Based on Inertial Electrostatic Confinement Fusion Scheme and its Damage Study of Fusion Materialat Centre of Plasma Physics-Institute for Plasma Research, Assam,
  • 2012-2013: M.Tech. Project on “Access to electricity through distributed energy generation: An application of HOMERat Tezpur University, Assam, India

Google Scholar Link: https://scholar.google.co.in/citations?user=vkd6KR4AAAAJ&hl=en

Source:indianexpress