Dr. Virendra Kumar

My ambition has always been to work in the competitive, well-organized, and cordial environment, where I can add to my skills that could finally reflect in my work.

EDUCATION
 

PhD    IIT Delhi, Physics                                                                             December 2022

New Delhi, India.

Dissertation: “DEVELOPMENT OF SPECKLE NOISE REDUCTION DEVICES FOR LASER BASED PROJECTION IMAGING AND UNIFORM ILLUMINATION”

            Committee: Dr. P. Senthilkumaran (chair), Dr. Sunil Kumar, Dr. Gufran S. Khan

 

M.A.   CCS University Meerut, Education                                                          June 2016

            MM College,

Modi Nagar, UP, India.

 

M.Ed. CCS University Meerut, Educational Technology                                    June 2015

NAS College,

Meerut, UP, India.

            Thesis: “EFFECTIVENESS OF TEACHING OF SCIENCE USING WORKING MODELS IN COMPARISION TO TRADITIONAL METHOD”

            Advisor: Dr. Anu Kumari

 

M.Sc.  CCS University Meerut, Physics with specialization in Electronics          June 2014

            NAS College,

            Meerut, UP, India.

 

B.Ed.  CCS University Meerut, Education                                                            July 2013

            SSV (PG) College,

            Hapur, UP, India.

 

B.Sc.   CCS University Meerut, Physics, Chemistry, & Math’s                            May 2011

            SSV (PG) College,

            Hapur, UP, India.

 

Intermediate UP Board,                                                                                        May 2007

                        CTC Janta Inter College,

                        Hapur, UP, India.

High School   UP Board,                                                                                       May 2005

                        CTC Janta Inter College,

                        Hapur, UP, India.

 

HONORS AND AWARDS
 

Senior Research Fellowship                                                                                 Sept.2020

CSIR, India

 

Junior Research Fellowship                                                                                 Nov 2017

CSIR, India

 

RESEARCH EXPERIENCE
 

IIT Delhi, New Delhi                                                                       July 2017 to April 2021

Research Scholar

• Four-year experience (other than Ph.D. thesis, on honorarium basis, 30 hours per week) in technology-development at “Green-photonics & Bio-photonics laboratory, IIT Delhi”
• Utilized skills such as 3D designing, CAD modelling, 3D printing, Microcontroller based circuits design and development, prototyping of products at industry level

 

TEACHING EXPERIENCE

IIT Delhi, New Delhi                                                                        July 2018 to June 2021

Teaching Assistant, Department of Physics

• Three-year experience (8 Hour per week) as teaching assistant during Ph.D. as institute’s duties, in M.Sc. (Physics) laboratory

 

Complete Solution Academy, Hapur, UP                                      April 2015 to June 2017

Director,

• Taught Physics to intermediate to postgraduate students
• Taught and developed course for C-TET and UP­-TET, National and State level teacher eligibility competitive exams
• Developed mock tests, exams, and pedagogy
• Organized science exhibitions on district level

 

SSV (PG) College, Hapur, UP                                                          Oct 2015 to Aug 2016

Assistant Professor, Department of Physics

• Taught Fundamentals of Electronics, an undergraduate course averaging 120 students per year, covering the following topics: PN-Junction, Power Supply, Transistors
• Taught Digital Electronics, a postgraduate course averaging 20 students per semester, covering the following topics: Logic Gates, Flip-Flops, Integrated Circuits
• Developed quizzes, exams, and homework
• Developed laboratory experiments for undergraduate and postgraduate students

 

PUBLICATIONS

 

Publications included in the Ph.D. thesis

1. Published in international journals

1. V. Kumar, A. K. Dubey, M. Gupta, and D. S. Mehta, "Speckle free efficient light engine for high power laser projectors and automobile headlamps," Opt. Laser Technol. 152, 108145 (2022).
2. V. Kumar, A. K. Dubey, M. Gupta, V. Singh, A. Butola, and D. Singh Mehta, "Speckle noise reduction strategies in laser-based projection imaging, fluorescence microscopy, and digital holography with uniform illumination, improved image sharpness, and resolution," Opt. Laser Technol. 141, 107079 (2021).
3. V. Kumar, M. Gupta, A. K. Dubey, S. Tayal, V. Singh, and D. S. Mehta, "Design and development of laser speckle reduction device using waveguide diffuser and pyramidal cavity for projection imaging," J. Opt. (United Kingdom) 22, 115601 (2020).
4. V. Kumar, K. Usmani, V. Singh, A. K. Dubey, M. Gupta, and D. S. Mehta, "Laser speckle reduction using spatially structured and temporally varying beams using double diffractive optical elements," Laser Phys. Lett. 17, (2020).

2. Published book chapter

1. V. Kumar, P. Chazoule, and D. S. Mehta, "Efficient, Cost Effective and Compact Device for Speckle Reduction in Laser Projectors and Laser TVs," in Springer Proceedings in Physics (2021), Vol. 258, pp. 383–386.

3. Communicated in international journal

2. V. Kumar, and D. S. Mehta, “Design and development of Laser diode based speckle-free automotive headlamp module,” communicated in Opt. Lasers Eng.

Publications not included in the Ph.D. thesis

1. Published in international journals

1. M. Gupta, A. K. Dubey, V. Kumar, and D. S. Mehta, "Experimental study of combined transparent solar panel and large Fresnel lens concentrator based hybrid PV/thermal sunlight harvesting system," Energy Sustain. Dev. 63, 33–40 (2021).
2. M. Gupta, A. Bhatnagar, A. K. Dubey, V. Kumar, and D. S. Mehta, "Dual Fresnel lens and segmented mirrors based efficient solar concentration system without tracking sun for solar thermal energy generation," Energy Sustain. Dev. 66, 201–208 (2022).
3. A. K. Dubey, V. Singh, M. Gupta, V. Kumar, and D. S. Mehta, "Monitoring the health of laser-driven phosphor-converted white light source using spectral interference technique," Opt. Lasers Eng. 143, (2021).
4. A. K. Dubey, V. Kumar, D. Kumar, M. Gupta, D. S. Mehta “Laser-driven Phosphor-Converted Broadband White Light Source using Multilayer Phosphor Composition,” Asian Journal of Physics 30, (2021).
5. A. K. Dubey, V. Kumar, M. Gupta, and D. S. Mehta, "Thermally stable laser-driven phosphor converted white light source using multilayer structured diffuser system," Laser Phys. Lett. 17, (2020).
6. M. Gupta, A. K. Dubey, V. Kumar, and D. S. Mehta, "Indoor daylighting using Fresnel lens solar-concentrator-based hybrid cylindrical luminaire for illumination and water heating," Appl. Opt. 59, 5358 (2020).
7. A. K. Dubey, M. Gupta, V. Kumar, V. Singh, and D. S. Mehta, "Blue laser diode-pumped Ce:YAG phosphor-coated cylindrical rod-based extended white light source with uniform illumination," Laser Phys. 29, 56203 (2019).
8. A. K. Dubey, M. Gupta, V. Kumar, and D. S. Mehta, "Laser-line-driven phosphor-converted extended white light source with uniform illumination," Appl. Opt. 58, 2402 (2019).
9. M. Gupta, A. K. Dubey, V. Kumar, and D. S. Mehta, "Solar concentrator based multipurpose sunlight harvesting system without tracking," OSA Contin. 2, 667 (2019).

(B) Published book chapter

1. M. Gupta, A. K. Dubey, V. Kumar, and D. S. Mehta, "Daylight Harvesting for Indoor Illumination Using Solar Concentrator and Light Guide," in Springer Proceedings in Physics (2021), Vol. 258, pp. 751–754

(C) Published in international conferences

1. M. Gupta, A. K. Dubey, V. Kumar, and D. S. Mehta, "Sunlight harvesting system for simultaneous use of room indoor lighting and water heating," in Optics InfoBase Conference Papers (2018), Vol. Part F119-.
2. A. K. Dubey, M. Gupta, V. Kumar, and D. S. Mehta, "LED-based extended white light source to reduce the heating effect on YAG:Ce +3 phosphor," in Optics InfoBase Conference Papers (2018), Vol. Part F117-.

(D) Communicated in international journals

1. P. Thapa, V. Singh, K. Gupta, A. Shrivastava, V. Kumar, K. Kataria, P. R. Mishra, and D. S. Mehta “Point-of-care devices based on fluorescence imaging and spectroscopy for tumour margin detection during breast cancer surgery: Towards breast conservation treatment,” Communicated in Lasers in Surgery & Medicine.
2. D. S. Mehta, A. Ahmad, V. Kumar, S. Tayal, S. Bhatt, V. Singh, V. K. Dubey, A. Butola, P. Basnet, and B. S. Ahluwalia, “Coherence-artifact free quantitative phase microscopy with high phase sensitivity, space-bandwidth and accuracy in phase measurement: A Review,” Communicated in Optics Express.

(E) Published in National Journal

1. J. Kumar, and V. Kumar, “Effectiveness of teaching of science using improvised working models in comparison to traditional method” Published in Indian Journal of Psychometry and Education Vo. No.53(1), 2022

PATENTS

1. D. S. Mehta, M. Khare, S. M. S. Nagendra, B. R. Mehta, A. Kumar, V. Kumar, S. Dhawan, A. Butola, A. Ahmad, V. Kumar, S. K. Gupta, and B. Singh, "A field-portable optical microscopic imaging device for air quality monitoring of pm 2.5 and pm10 and its method of implementation thereof," Indian patent 202111020345 (2021). (Filed)
2. D. S. Mehta, M. Gupta, V. Kumar, A. K. Dubey, and N. C. Nautiyal, "A shadow-less cascaded solar panel based photovoltaic power generation system and method of its operation thereof," Indian patent 202011025108 (2020). (Granted)
3. D. S. Mehta, V. Kumar, H. Pandey, P. Thapa, S. Kanade, V. Singh, N. C. Nautiyal, V. K. Dubey, K. Usmani, and A. Butola, "Field-portable smart phone based multimodal auto-fluorescence, fluorescence and polarization imaging and spectroscopic device," Indian patent 201911019629 (2019). (Filed)
4. D. S. Mehta, M. Gupta, S. K. Dubey, N. C. Nautiyal, A. K. Dubey, V. Kumar, and M. Kularia, "Non-mechanical tracking solar concentrator," Indian patent 201811005585 (2018). (Filed)
5. D. S. Mehta, A. K. Dubey, M. Gupta, and V. Kumar, "Laser based solid state lighting device for white light generation and method thereof," Indian patent 201811035300 (2018). (Filed)

TECHNOLOGY TRANSFERS

1. V. Kumar, and D. S. Mehta, “Development of low volume sampler for monitoring heavy metals in ambient air” Technology was transferred to the Envirotech Instruments Pvt. Ltd. Okhla Industrial Area, Phase-1, New Delhi-110020, India, on 31/03/2021.
2. D. S. Mehta, M. Gupta, V. Kumar, and A.K. Dubey, “High-Efficiency Solar Tower Based Photo-Voltic System” Technology was transferred to the EP Sunsol Pvt. Ltd. Bengaluru-560050, India, on 31/05/2021.

LIST OF CONFERENCES ATTENDED

1. Oral presentation in the international conference “ICOL 2019, IRDE Dehradun, India” from 19 October 2019 to 22 October 2019. My topic of presentation was “Efficient, Cost Effective and Compact Device for Speckle Reduction in Laser projectors and Laser TVs”.
2. Attended 2020 Conference on Lasers and Electro–Optics ("CLEO”), 11 – 15 May 2020, in an all–virtual, web conference format.
3. Attended Imaging and Applied Optics Congress & Optical Sensors and Sensing Congress, 22 - 26 June 2020, in an all–virtual, web conference format.

LANGUAGES

Hindi: Native Language

English: Intermediate Listener and Speaker, Advanced Reading and Writing

Sanskrit: Intermediate Listener, Novice Speaker, Intermediate Reading and Writing

COMPUTER SKILLS

Software: MATLAB, TracePro, Zemax, 123D Design, Autodesk Inventor, C++, Python, TracePro, Zemax, 123D Design, Autodesk Inventor, Arduino IDE.

TECHNICAL SKILLS

Laser Cutting, 3-D designing, 3-D Printing, Grinding, Drilling, CNC Machine, Water-Jet Cutting, Embedded System Design, Internet of Things.

OTHER

Interests/Hobbies

• Book Collection
• Playing Guitar
• Creating Teaching Aids

REFERENCES

Prof. D. S. Mehta, [Chair Professor]

Department of Physics

Indian Institute of Technology Delhi

Bio Photonics & Green Photonics Laboratory, IIT Delhi, New Delhi, 110016.

Phone: Tel:+91 11 2659 1455, Mob. +91-9818769924

Email: mehtads@physics.iitd.ac.in

Padma Shri Prof. D.T. Shahani, [Honorary Professor]

Centre for Sensors, INstrumentation and Cyber-physical System Engineering

Indian Institute of Technology Delhi

MDIT Lab, IIT Delhi, New Delhi, 110016.

Phone: Tel:+91-11-26591437, Mob. +91-9811297732

Email: shahani@sense.iitd.ac.in, shahani@iddc.iitd.ac.in