लेखक: Aman Dahiya

Dr. Sanjay Yadav Dr. Sanjay Yadav, born in 1962, obtained his master degree in science (M.Sc.) in 1985 and Ph.D. degree in Physics in 1990. Presently, he is Chief Scientist and Head, Physico Mechanical Metrology Division of NPL leading a group of 23 scientists working on various projects. In addition, he is also holding the post of Professor, Faculty of Physical Sciences, Academy of Scientific and Innovative Research (Ac SIR), HRDG, Ghaziabad teaching ‘Advanced Measurement Techniques & Metrology’ course, taking practical classes and supervising graduate, master and Ph.D. students since 2011. He is the recipient of research scholarships from Ministry of Home Affairs, India (1986); CSIR, India (1988); Col. G.N. Bajpayee Award of Institution of Engineers, India (1989); Commendation Certificates from Haryana Government (1991 & 1992); JICA Fellowship of JAPAN (1998), Commendation Certificates from SASO, Saudi Arabia (2003); 3 Appreciation Certificates from Director, NPL (2005); Managing Editor, MAPAN (2006-2014); nominated as Member of APMP Technical Committee of Mass Related Quantities (TCM), Australia (2013-2019); Nominated as Country Representative in APMP, China (2019); Vice President, Metrology Society of India (2020); Member, National Advisory Committee, NCERT, Delhi (2019); Members, Testing and Calibration Advisory Committee, BIS (2019, 2020 and 2021), and very recently received a prestigious International award i.e. APMP Award for Developing Economies, China (2020). He is working as the Editor-in-Chief (EIC) of the MAPAN: The Journal of Metrology Society of India; Editorial Board of the International Journal of Metrology and Quality Engineering (IJMQE), France; Associate Editor-in-Chief of BGR Publications and reviewer of several SCI journals. He has extensively visited several countries i.e. France, Japan, SASO, Saudi Arabia, Indonesia, Bhutan and Malaysia on official assignments and deputations. He has significantly contributed in thefield of pressure metrology, biomedical instrumentation, ultrasonic transducers and instrumentation systems. His current research interests include research and developmental activities in physico mechanical measurements; establishment, realization, maintenance and up-gradation of national pressure and vacuum standards; dissemination of national practical pressure scale to users through apex level calibration, training and consultancy services; inter-laboratory comparisons, proficiency testing programme and key comparisons, implementation of Quality System in the laboratory as per ISO/IEC 17025 standard and Finite Element Analysis (FEA) and Monte Carlo Simulations for pressure balances. He has more than 350 research publications to his credit, published in the national and international journals of repute and conferences besides contributing several books with Springer and MSI as well as in drafting several project, scientific and technical reports, documents and policy papers. Dr. K.P. Chaudhary  Dr. K.P. Chaudhary did his M.Tech in Instrumentation from NIT Kurukshetra and Ph.D. from IIT DELHI in Optical Instrumentation/Metrology. Dr. K.P. Chaudhary initially joined CSIO Chandigarh in 1980 and worked for about fifteen years in different capacities. He has designed and developed a no-contact microprocessor based Laser Scanning Micrometer. It’s know how was transferred to CEL Sahibabad for commercialization and production. In addition to this, he was also responsible for the development of various opto-electronics instruments namely Digital Laser Power Meter, Laser Communication System, Optical Viscometer etc. In 1996, he joined National Physical Laboratory (NPL), Delhi as Senior Scientist. He has published more than 90 research papers in journals and International conferences. He has also registered 7 PATENTS to his credit and out of which six technologies have been transferred as consultancy projects. He has also been instrumental providing his technical expertise to the Indian industries as well as SAARC nations (Pakistan, Bangladesh, Bhutan, Nepal, Sri Lanka, Maldives, etc) under SAARC-PTB cooperation project as Principle Investigator of International Collaboration of SAARC cooperation project. He has visited many countries on official deputations; to name few of them are Germany, France, USA, Indonesia, UK, Bhutan, Sri Lanka, Bangladesh etc. on various capacities/assignments. He is also a reviewer of CMCs of Asia Pacific Metrology Programme (APMP) as member of Technical Committee of Length (TCL). He has also established a 3D Coordinate Measuring Machine (CMM), 4M Laser based Length Measuring Machine (LMM), Roundness Measuring Machine etc. He has chaired various prestigious committees of NPL. On a role of scientific societies, he is Fellow of IETE, MSI, USI, OSI, ISI and some International groups like TC213, WGDM, and APMP TCL etc. Since long, he is also associated with National Accreditation Board of Laboratory (NABL) and Bureau of Indian Standards (BIS) as Chairman of core/Supplementary committees and also as the Lead/Technical Assessor (NABL). He has delivered more than 100 invited talks and lectures in industries, laboratories and technical institutions. He has guided more than 15 students of M.Tech, B.Tech, and MDS for their project works He was working as Chief Scientist and Head at NPL before joining as Director at Maharaja Surajmal Institute of Technology, Janakpuri, New Delhi. Dr. Ajay Gahlot Dr. Ajay Gahlot is currently working as an Associate Professor in the Department of Applied Sciences, Maharaja Surajmal Institute of Technology (MSIT), Janakpuri, New Delhi. He received his M.Sc. in Physics from Delhi University (India), in 2001, M.Tech. (Solid State Technology) from Indian Institute of Technology (IIT), Chennai in 2004 and Doctorate in Plasma Physics from Guru Govind Singh Indraprastha University (GGSIPU), in 2011. His major areas ofresearch interests include Plasma Physics, waves in Dusty & Strongly Coupled dusty plasma, Fusion plasma and Condensed Matter Physics. He has over 16 years of teaching experience and published 30 research papers in reputed National/International journals and conferences. He has published total 15 SCI research papers in highly reputed International journals. Dr. Yogendra Arya Dr. Yogendra Arya is currently working as an Associate Professor with the Department of Electrical Engineering, J.C. Bose University of Science and Technology, YMCA, Faridabad, Haryana. He received his A.M.I.E. in Electrical Engineering from The Institution of Engineers (India), in 2008, M.Tech. (Instrumentation and Control) from Deenbandhu Chhotu Ram University of Science and Technology (DCRUST), Murthal, Haryana in 2010 and Ph.D. from Delhi Technological University (DTU), Delhi in 2018. His major areas of research interests include automatic generation control, load frequency control, automatic voltage control, control system, fuzzy control, optimization techniques, energy storage systems and renewable energy systems. He has published 50 research papers in reputed National/International journals and conferences. He has published 33 SCIE research papers in highly reputed International journals, out of which 13 are written as a sole author. He has received “MSIT Best Faculty Award” in 2018 and “MSIT Certificate of Excellence in Research” in 2018 and 2019. He has been placed among “Top 2% of Researchers in the World” for 2019 by Stanford University, USA. He is a regular reviewer of leading journals including IET and IEEE Transactions/journals. He is Associate Editor of Journal of Electrical Engineering and Technology (SCIE journal published by Springer), International Journal of Numerical Modelling: Electronic Networks, Devices and Fields (SCIE journal published by Wiley), and Academic Editor of Plos One (SCIE journal). He is Fellow of The Institution of Electronics and Telecommunication Engineers (I.E.T.E), Associate Member of The Institution of Engineers (India), Life Member of Indian Society for Technical Education (I.S.T.E.) and Member of International Association of Engineers.  Dr. Aman Dahiya Dr. Aman Dahiya is currently working as an Assistant Professor in the Department of Electronics & Communication Engineering, Maharaja Surajmal Institute of Technology (MSIT), Janakpuri, New Delhi since 2009. She received Bachelor in Engineering (Electronics & Communication Engineering) with distinction, in 2005, from Maharashi Dayanand University, Rohtak, Haryana; M.BA. (Finance) in 2007 from Guru Jambheshwar University (GJU), Hissar; M.Tech (ECE) in 2010 with distinction from Maharashi Dayanand University, Rohtak, Haryana and  Ph.D. degree in Microwave Engineering in 2019.  Her major areas of research include Design and Analysis of Microwave and millimetre-wave Devices such as Rectangular Waveguides, Substrate Integrated Waveguides (SIW), Microstrip Patch Antennae, Reconfigurable antennae, IOT based applications etc. She has published 28 research papers in various national/ international journals and conferences of repute. She has authored 3 books in Microwave circuits and antenna designs. She has handled successfully IEEE MTT-s sponsored research project on Reconfigurable Antenna design for wireless communications. Her patent on “Antenna Designing” is published in 2020. She has been awarded “Certificate of Excellence” for best presentation, in 2006, “MSIT Certificate of Excellence in Research”, in 2019. She is a reviewer of many leading journals. She is life member of Indian Society for Technical Education and associate member of IEEE. Dr. Naveen Garg Dr. Naveen Garg is Principal Scientist in CSIR-National Physical Laboratory, New Delhi working in the field of Acoustics and Vibrations since past 16 years. He is also guiding doctorate students in the field of noise control. He is a Mechanical Engineer specializing in Machine Design, Vibrations and Acoustics, Measurement science and working in development and up-gradation of primary standards of sound pressure and vibration amplitude and R&D in Applied Acoustics. He has done his Doctorate in Mechanical Engineering from Delhi Technological University, Delhi and M. Tech in Machine Design from IIT Delhi. He has been involved in many consultancy and sponsored projects pertaining to Environmental Impact Assessment studies in respect of noise and vibration for govt. bodies like Central Pollution Control Board (CPCB), Archaeological Survey of India (ASI), Delhi Metro Rail Corporation (DMRC), Bangalore Metro Rail Corporation Limited (BMRCL), India etc. He has published many papers in national and international journals in the field of acoustics and vibrations and has been actively involved in the Key Comparison exercises in Acoustics and Vibration metrology with other National Metrology Institutes (NMIs) of the worldthat has led to publishing of Calibration & Measurement Capabilities (CMCs) of CSIR-NPL, India in BIPM, Paris Key Comparison Database (KCDB). He has been Managing Editor of MAPAN-Journal of Metrology Society of India published by Springer and reviewer of many international journals and has enormously contributed towards evaluation, analysis and control of noise pollution. He was awarded APMP Iizuka Young Metrologist Prize for Developing Economies by Asia Pacific Metrology Programme (APMP) Secretariat, Japan in November, 2017 for his notable contributions to acoustics and vibration metrology.