PhD: Department of Physics, Indian Institute of Technology Guwahati, Guwahati, Assam

M.Sc. in Physics: University Department of Physics, Ranchi University, Ranchi, Jharkhand

B.Sc. in Physics: St. Xavier’s College, Ranchi University, Ranchi, Jharkhand

Intermediate: St. Xavier’s College, Jharkhand Intermediate Education Council, Ranchi

Matriculation: CCL High School Naya Nagar Barkakana, Bihar School Examination Board, Patna

Fellowships

• SERB National Postdoctoral Fellowship (Physical Sciences), Government of India.

• Graduate Aptitude Test in Engineering (Physics), MHRD, Government of India.

Memberships

• Plasma Science Society of India

• Optical Society of America

Other

• Joint CSIR-UGC Test for Eligibility for Lectureship (Physical Sciences) 2008

Project (Principal Investigator)

• Fabrication of plasmonic metal/graphene hybrid nanostructures for sensing and optoelectronic applications.

Work Experience

• Senior Project Scientist - (Sept,2019-Nov,2020) - Indian Institute of Technology Kanpur

• National Postdoctoral Fellow- (Sept,2017-Sept,2019) - Indian Institute of Technology Kanpur

• Senior Research Fellow - (April,2017-June,2017) - Indian Institute of Technology Guwahati

Research

Design and operation of experimental setup -

• Fabrication of carbon thin films using pulsed laser deposition technique.

• Synthesis of nanodiamond using pulsed laser ablation in liquid.

• Plasma diagnostics (Spectroscopy and Imaging) of graphite plasma.

• Nonlinear optical study of carbon thin films.

• Laser beam micromachining.

• Optical fiber sensing characterization.

Nanomaterial Characterizations -

• Raman spectroscopy

• Scanning electron microscopy

• Transmission electron microscopy

• Atomic force microscopy

• UV-Vis-NIR spectroscopy

• FTIR spectroscopy

• Spectroscopic ellipsometry

Technical Skills (Operation of sophisticated instruments) -

• Raman spectrometer (Horiba Jobin Yvon, LabRam HR800)

• Transmission electron microscope (Jeol, JEM 2100)

• UV-Vis-NIR spectrometer (SHIMADZU)

• Monochromator (SPEX 750M)

• Oscilloscope (Tektronix DPO4104B)

• Optical Spectrum Analyzer (Yokogawa AQ6370Q)

• Stylus Profilometer (Dektak)

• High Vacuum chamber

• Lasers - Q-switched Nd:YAG lasers (Quanta Ray, Quanta system, Litron), CW He-Ne laser and CW Ar-ion laser.

Computational Skills -

• COMSOL Multiphysics

• Matlab

• Python

Materials -

• Diamond-like carbon thin films

• Graphitic thin films

• Nanodiamonds

• Graphene

• Optical fibers

Journals

• Ultrahigh sensitive long-period fiber grating-based sensor for detection of adulterators in biofuel

• Simultaneous Existence of Ultrahigh and Ultralow Spectral Sensitivity for Directional Couplers

• Single-Multi-Single Mode Fiber Optic Structure Based Water Depth Sensor

• Optical nonlinearity in nanostructured carbon thin films fabricated by pulsed laser deposition technique

• Modified Z-scan set-up using CCD for measurement of optical nonlinearity in PLD carbon thin film

• Third order optical nonlinear studies on highly conducting vertically aligned carbon nanoflakes

• Experimental investigation of underwater laser beam micromachining (UW-LBμM) on 304 stainless steel

• Multi- and few- layer graphene on insulating substrate via pulsed laser deposition technique

• Laser Induced Breakdown of Poly (Methyl Methacrylate (PMMA)) in Air

• Raman spectra of PLD deposited DLC thin films on Si substrate

Conference Proceedings

• TiO₂ Based Micro- Ring Resonator as Near Infrared Laser Line Filter: Numerical Simulation

• Metal-Grating Assisted Surface Plasmon Resonance based Highly Sensitive Gas Sensor

• Ultra High Refractive Index Sensitivity using Directional Coupler

• Substrate Effect on Sensing Characteristics of Gold Thin Films and Gratings

• Critical Wavelength in The Transmission Spectrum of a Directional Coupler

• Ultra Sensitive Long Period Fiber Gratings Based Sensor for Detection of Adulterator in Ethanol

• Surface Plasmon Resonance in Copper Thin Film: Numerical Simulation and Experiments

• Extremely sensitive refractive index sensor based on Directional Coupler

Conference Presentations

• Metal-Grating Assisted Surface Plasmon Resonance based Highly Sensitive Gas Sensor

• Ultra High Refractive Index Sensitivity using Directional Coupler

• TiO₂ Based Micro- Ring Resonator as Near Infrared Laser Line Filter: Numerical Simulation

• Surface Plasmon Resonance in Copper Thin Film: Numerical Simulation and Experiments

• Extremely sensitive refractive index sensor based on Directional Coupler

• Spectroscopic study of Polypropylene (PP) using second harmonic of Nd:YAG Pulsed Laser

• Off-core long period fiber grating based highly sensitive refractive index sensor

• Nonlinear Optical Properties of PLD Semiconducting Thin Films under CW-Laser Irradiation

• NLO behaviour of semitransparent Cu thin film deposited by PLD

• Laser power induced disorder in PLD deposited DLC film during Raman measurement

• Nonlinear absorption and refraction measurement of PLD deposited carbon thin film

• Laser induced graphite plasma in liquid by CCD imaging

• Raman spectra of PLD deposited DLC thin films on Si substrate

• Diamond like carbon films deposited by pulsed laser ablation of graphite target

• Optical nonlinearity of nanostructured carbon thin films deposited via pulsed laser ablation technique

• Spatial evolution of laser induced graphite plasma by Langmuir probe

• Laser induced breakdown of Poly (Methyl Methacrylate (PMMA)) in air

• Growth of few layers graphene via pulsed laser deposition technique using graphite target

• Raman spectrum of multilayer graphene grown by pulsed laser ablation of graphite target

• Emission spectroscopy of laser induced plasma from graphite target in vacuum

• Laser induced breakdown spectroscopy (LIBS) of polytetrafluroethylene (PTFE)

• Temporal studies of C2 species in nanosecond laser-induced graphite plasma

• Preparation of polytetrafluroethylene (PTFE) thin films via PLD technique

• Synthesis of nanodiamonds via pulsed laser ablation in Iso-propyl alcohol

• Formation of diamond nanocrystals via pulsed laser ablation of graphite in liquids

• Effect of substrate temperature on pulsed laser deposited diamond like carbon thin films

Workshops/Schools

• DST SERC Preparatory School on Modern Optics, Department of Physics, Indian Institute of Technology Guwahati, Guwahati, India during November 10-23, 2010.
• Winter School on Recent Trends in Physics of Atoms, Molecules and Lasers (WSRTPAML- 2011), Department of Physics, Faculty of Science, Banaras Hindu University, Varanasi, India during January 9-31, 2011.
• Quality Improvement Programme (QIP) short term course, Department of Physics, Indian Institute of Technology Guwahati, Guwahati, India during August 1-6, 2011.
• IEEE Workshop on Compressive Sensing and Technical Writing, IEEE Student Branch, Indian Institute of Technology Guwahati, Guwahati, India during April 6-7, 2013.
• IEEE Matlab Workshop, IEEE Student Branch, Indian Institute of Technology Guwahati, Guwahati, India during June 22-23, 2013.
• National Workshop on Advanced Probing Techniques in TEM (APTTEM-2016), Indian Institute of Technology Guwahati, Guwahati, India during February 15-16, 2016.