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Conferences Proceeding or Presentations

  1. Dheeraj Kumar, R.K. Varshney and Dalip Singh Mehta, “Waste Glass-based Laser-Driven Phosphor-in-Glass for High-Brightness General-Purpose Lighting Application” International Conference has been approved by the scientific committee for the Oral presentation at Recycling 2025, organized at Barcelona, Spain during 24-25 March 2025. 

  2. Dheeraj Kumar, R.K. Varshney and Dalip Singh Mehta, “Development of Robust and Efficient ColourConverting Films for Laser-Based Solid-State Lighting” International Conference on Advancements in Material Science for Sustainable Development (AIMS-2025)” to be held at Central University of Haryana during Feb 13-15, 2025.

  3. Dheeraj Kumar, R.K. Varshney and Dalip Singh Mehta, “Laser-driven colour converter with Al2O3-ZnO composite phosphor-in-glass for high-brightness white light illumination” International Conference on SPIE Photonic West (2025) organized at Moscone West, Room 2003 (Level 2) during 25-30 January 2025. 

  4. Dheeraj Kumar, R.K. Varshney and Dalip Singh Mehta, “Laser-driven phosphor-converted green photonic technology based solid state lighting device for high brightness illumination” International Conference on SPIE Photonic West (2025) organized at Moscone West, Room 2003 (Level 2) during 25-30 January 2025. 

  5. Dheeraj Kumar, R.K. Varshney and Dalip Singh Mehta, “Design of Thermally Stable Laser-Driven Phosphor-Converted White Light Source for High Colour Rendering Index Illumination”  1st International Conference on Emerging Trends in Optical Technologies (ETOT-I), which will be held from 02-04th January 2025 at SRM University - AP, Andhra Pradesh.

  6. Dheeraj Kumar, R.K. Varshney and Dalip Singh Mehta, “Laser-based solid state lightning and Communication”  International Conference on INAE Annual Convention 2024 from December 19-21 2024 at IIT Delhi.

  7. Dheeraj Kumar, R.K. Varshney and Dalip Singh Mehta, “Laser-Driven Multiple Phosphor-Converted Sunlike Full Spectrum White Light Source for Solid-State Lighting"XLVII OSI International Conference on Advances in Optics and Photonics Instrumentation (OPTOIn) 2024 organised by CSIR-CSIO Chandigarh from 23-25 October, 2024 at Taj Chandigarh, Haryana Oral Presentationce.

  8. Dheeraj Kumar, R.K. Varshney and Dalip Singh Mehta, “Design and Development of Laser-Driven Multiple Phosphors Converted White Light Source in Concentric Ring Configuration with High Thermal Stability,” International Conference on Optics, Photonics and Quantum Information (OPTIQ -2023) organized at Cochin University of Science and Technology during December 11-13, 2023. (Abstract Accepted) XLVI-OSI 2023 (optiq-2023.vercel.app)

  9. Dheeraj Kumar, R. K. Varshney, Dalip Singh Mehta, “Development of Waste Glass Frits-based Phosphor in Glass (PiG) Light System for High Thermal Stability,” International Conference on Materials for Energy and Sustainable Development (MESD-2023), which held at SPS, JNU, New Delhi, India during October 27-29, 2023 (Oral)- (Paper in process of submission) MESD-2023 (mesd2023.com)

  10. Dheeraj Kumar, Shivam Trivedi and Prof. D.S. Mehta, “Design and Development of Innovative Non- mechanical tracking Solar concentrator for multipurpose sunlight harvesting” IRD IITD review meet heal at IIT Delhi in August 2023

  11. Dheeraj Kumar, Atul Kumar Dubey, and Dalip Singh Mehta, “Laser Diode Based White Light Generation with Sunlike Full Spectrum and High CRI for General Purpose Illuminations”, Conference on Optics, Photonics & Quantum Optics (COPaQ-2022) held at IIT Roorkee, U.K., India from 9-13th November 2022. (Conf. Proceeding) COPaQ 2022 (iitr.ac.in)

  12. Puspita Chanda, Vikas Kumar, Dheeraj Kumar, Kanchan Saxena and Dalip Singh Mehta, “Light Emitting Diode Based Solar Simulator with Broad Band Spectra”, Conference on Optics, Photonics & Quantum Optics (COPaQ-2022) held at IIT Roorkee, U.K., India from 9-13th November 2022. (Conf. Proceeding) COPaQ 2022 (iitr.ac.in)

  13. Aayushi Soni, Harpreet Kaur, Dheeraj Kumar, Shivam Trivedi, and Prof. D.S. Mehta, “Visible Light Communication (VLC) Using Blue LED and Phosphor Converted (pc-LED) White Light Source Using Solar Panel as Detector”, Conference on Optics, Photonics & Quantum Optics (COPaQ-2022) held at IIT Roorkee, U.K., India from 9-13th November 2022. (Conf. Proceeding) link- COPaQ 2022 (iitr.ac.in)

  14. Mayank Gupta, Virendra Kumar, Krishana Ballabh Kumar, Dheeraj Kumar, Prof. D.S. Mehta, “Design and Development of Innovative Non- mechanical tracking Solar concentrator for multipurpose sunlight harvesting” IRD IITD review meet heal at IIT Delhi in August 2022

  15. Dheeraj Kumar, Monika Tomar, Vinay Gupta, Gurmohinder Singh Chilana,” Enhanced optical properties in Nickel doped polycrystalline BiFeO3 thin films deposited by sol-gel technique”, Smart energy resources and sustainable Engineering, Old Campus Seminar Hall, Swami Shraddhanand College, Alipur, Delhi from March 28-29, 2019.

  16. Savita Sharma, Dheeraj Kumar, Monika Tomar, Vinay Gupta, “Enhancement photovoltaic responses in metal nanocluster loaded multiferroic BFO thin film” International Conference on Technologically Advanced Materials & Asian Meetings on Ferroelectricity (ICTAM-AMF10-2016), held at University of Delhi, Delhi, India from November 7-11, 2016.

  17. Dheeraj Kumar “Nanotechnology in Biological Systems”, National Conference on Relevance of Nanotechnology in Biology, Hans Raj College, University of Delhi, Delhi, India on March 1st, 2013.

  18. Dheeraj Kumar “Vital Role of Science in Our Society”, National Symposium on Resent Trends in Innovative Research at Under-graduation: Science and Society” held between 28th Feb.-2nd March, 2013 at Sri Venkateswara College, University of Delhi, India.

  19. Dheeraj Kumar, Ayushi Paliwal and Vinay Gupta, “Study of Surface Plasmon Resonance Based Refractive Index of Gold and Zinc Oxide Thin Films”, INDO-GERMAN Workshop on Advanced Materials for Future Energy Requirements-2012”, (WAMFER-2012), University of Delhi.

Journal Publications

 

Atul Kumar Dubey, Virendra Kumar, Dheeraj Kumar, Mayank Gupta, and Dalip Singh Mehta, “Laser-driven Phosphor-converted Broadband White Light Source using Multilayer Phosphor Composition”, Asian Journal of Physics, Volume30, No 4, April 2021 (Accepted, under press) .http://demo050307.hostgator.co.in/home, http://demo050307.hostgator.co.in/content2/vol-30-2021/vol-30-no-4 2.
 

Workshops

  1. "Atomic Force Microscopy Workshop" from 21st -23rd Feb 2023 at Central Research Facility, IIT Delhi

  2.  "Steady State Photoluminescence (SSPL) Spectroscopy", one day hands-on workshop on organized by SATHI Foundation IIT Delhi, on 07th June 2023.

  3. "Fluorescence School 2023" organized by the HORIBA India-IIT Delhi Technical center at IIT Delhi on 31st October 2023 followed by one day hand on training session.

  4.  "XRD Workshop" organized by CRF IIT Delhi on14th- 15th March 2023 held at Sonipat Campus, IIT Delhi

  5. "Indigenous 5G Test Bed-Training Workshop",  LiFi training" workshop organized by IIT Delhi on 24th December 2022 lectures and Hands-on Training in-person held at Bharti Building, IIT Delhi.

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