研究者情報

KUMAR VARUN（クマール ヴァルン）　KUMAR Varun

学部等／職名

総合理工学部　機械・電気電子工学科　講師
Department of Mechanical,Electrical and Electronic Engineering

書籍等出版物（著書）

1.	Book Chapter: Applications of Digital Holographic Interferometry in Heat Transfer Measurements from Heated Industrial Objects (IntechOpen, United Kingdom 2023年 2月) ISBN:9781803565 キーワード:Digital Holography, Industrial Application, Temperature, Heat Transfer
2.	Applications of digital holographic interferometry for the measurements of heat transfer parameters from heated industrial objects ( 2022年 10月) ISBN:9781803565644
3.	Digital holography for the measurement of natural convective heat transfer coefficient along the surface of electrically heated wire ( 2016年 10月) ISBN:9789042304390

論文（論文等）

1.	「Three-Dimensional Shape Measurement of Machined Si3N4 Substrate Surface Using Dual-Wavelength FMCW Digital Holography」 Itsunori Okamotoa, Hikaru Hamada, Varun Kumar, Masayuki Yokota vol.:14 No.:1 70-76頁 2026年 3月
2.	「ロックインサーモグラフィとディジタルホログラフィ干渉法によるフレキシブル太陽電池中の欠陥解析」 正幸 横田, 大晴 福島, Varun Kumar 産業応用工学会論文誌 vol.:14 No.:1 9-14頁 学術雑誌 2026年 3月 ISSN:2189373X
3.	「FMCW-digital holography for utilizing the spatiotemporal frequency domain as a multiplexable bandwidth: simultaneous two-wavelength profile measurement for multiple objects」 Hikaru Hamada, Varun Kumar, Masayuki Yokota Optical Measurement Systems for Industrial Inspection XIV vol.:Proc. SPIE 13567 1356721-1-1356721-9頁 2025年 8月
4.	「Study the shrinkage process of UV-curable adhesive using digital holographic interferometry」 Varun Kumar, Ryoichi Ozono, Taisei Kishikawa, Katsuya Kito, Katsuhiro Iwasaki, Masayuki Yokota Optics and Laser Technology vol.:186 112746-112746頁 学術雑誌 2025年 8月 ISSN:00303992
5.	「Digital Holography and Its Applications in Engineering and Biosciences」 Varun Kumar, Masayuki Yokota, Chandra Shakher 2025 International Conference on Microwave, Optical, and Communication Engineering (ICMOCE) 1-5頁 2025年 5月
6.	「Spatiotemporal heterodyne multiplexing in digital holography for realizing broad recordable bandwidth」 Hikaru Hamada, Varun Kumar, Masayuki Yokota Optics Letters vol.:50 No.:9 全:4頁 2808-2808頁 学術雑誌 2025年 4月 ISSN:01469592
7.	「Detection of defects in the solar battery film using both digital holography and lock-in thermography」 Varun Kumar, Masayuki Yokota, Taisei Kishikawa, Yusuke Wakabayashi OPTICS & PHOTONICS International Congress 2024 vol.:OPIC 2024 No.:IP7-03 全:2頁 1-2頁 2024年 4月 ISSN:00000000 キーワード:Digital holography, defects, Lock-in -thermography, phase, temperature
8.	「Qualitative and quantitative investigations of temperature distribution, heat flow, and heat transfer parameters from the heated objects using lensless Fourier transform digital holography: A review」 Varun Kumar, Chandra Shakher Optics and Laser Technology vol.:168 109918-109918頁 学術雑誌 2024年 1月 ISSN:00303992
9.	「Volume phase holographic grating based digital holographic interferometer for temperature measurement of human hand skin」 Vivek Rastogi, Varun Kumar, Satish Kumar Dubey, Gufran Sayeed Khan, Chandra Shakher Optical Technology and Measurement for Industrial Applications Conference 2022 2022年 12月
10.	「Volume phase holographic grating based digital holographic interferometer for temperature measurement of human hand skin」 Vivek Rastogi, Varun Kumar, Satish Kumar Dubey, Gufran Sayeed Khan, Chandra Shakher Proceedings of SPIE, Event: Optics and Photonics International Congress, 2022, Yokohama, Japan vol.:12480 全:6頁 1248006頁 2022年 12月 ISSN:1996756X キーワード:Temperature, Non Contact measurement, volume phase holographic grating
11.	「Noncontact temperature measurement of human hand skin using volume phase holographic optical element based digital holographic interferometer」 Vivek Rastogi, Varun Kumar, Satish Kumar Dubey, Gufran Sayeed Khan, Chandra Shakher Optics and Lasers in Engineering vol.:151 106886-106886頁 学術雑誌 2022年 4月 ISSN:01438166
12.	「Noncontact temperature measurement of human hand skin using volume phase holographic optical element based digital holographic interferometer」 Vivek Rastogi, Varun Kumar, Satish Kumar Dubey, Gufran Sayeed Khan, Chandra Shakher Optics and Lasers In Engineering vol.:151 全:10頁 106886_1-10頁 学術雑誌 2022年 4月 ISSN:01438166 キーワード:Temperature, Phase measurement, Digital Holography
13.	「Volume phase holographic grating based digital holographic interferometer for measurement of temperature distribution and temperature fluctuations in diffusion flames」 Vivek Rastogi, Varun Kumar, Satish K. Dubey, Gufran S. Khan, Chandra Shakher 2021年 6月
14.	「Holo-shear lens based interferometer for investigating temperature profile of macro, and micro diffusion flames, and study of magnetic field induced promotion of combustion in micro flame」 Varun Kumar, Chandra Shakher Asian Journal of Physics vol.:30 No.:1 45-62頁 学術雑誌 2021年 3月
15.	「Investigation of temperature profile and temperature stability of micro diffusion flame under the influence of magnetic field by use of a holo-shear lens-based interferometer」 Varun Kumar, Vivek Rastogi, Shilpi Agarwal, Chandra Shakher vol.:59 No.:06 1-1頁 学術雑誌 2020年 6月 ISSN:00913286
16.	「Holo-shear lens based interferometer for measurement of temperature distribution and fluctuation of temperature in micro flame」 Varun Kumar, Vivek Rastogi, Shilpi Agarwal, Chandra Shakher Holography, Diffractive Optics, and Applications IX (Proc. SPIE) vol.:11188 2019年 11月
17.	「Holographic optical element based digital holographic interferometer for the study of macro flames, micro flames and their temperature instability」 Vivek Rastogi, Shilpi Agarwal, Varun Kumar, Chandra Shakher Optics and Lasers in Engineering vol.:122 29-36頁 学術雑誌 2019年 11月 ISSN:01438166
18.	「Visual and quantitative investigation on heat flow performance from heat sinks using digital holographic interferometer」 Varun Kumar, Chandra Shakher Holography, Diffractive Optics, and Applications IX, Invited Paper (Proc. SPIE) vol.:11188 2019年 11月
19.	「Measurement of temperature and temperature fluctuations in wick stabilized micro flame using digital holographic interferometry」 Shilpi Agarwal, Vivek Rastogi, Varun Kumar, Satish K. Dubey, Chandra Shakher Holography: Advances and Modern Trends VI (Proc. SPIE, Prague, Czech Republic) vol.:11030 2019年 4月
20.	「Characterization of Micro-lenslet Array Using Digital Holographic Interferometric Microscope」 Varun Kumar, Chandra Shakher Optics, Photonics and Laser Technology vol.:218 25-45頁 論文集(書籍)内論文 2018年 10月 ISSN:03424111
21.	「Temperature measurement of wick stabilized micro diffusion flame under the influence of magnetic field using digital holographic interferometry」 Shilpi Agarwal, Varun Kumar, Chandra Shakher Optics and Lasers in Engineering vol.:102 161-169頁 学術雑誌 2018年 3月 ISSN:01438166
22.	「Analysis of red blood cell parameters by Talbot-projected fringes」 Shilpi Agarwal, Varun Kumar, Chandra Shakher Journal of Biomedical Optics vol.:22 No.:10 1-1頁 学術雑誌 2017年 10月 ISSN:10833668
23.	「Onion cell imaging by using Talbot/self-imaging effect」 shilpi Agarwal, varun kumar, Chandra Shakher Third International Conference on Applications of Optics and Photonics (Proc. SPIE, Faro, Portugal) 2017年 8月
24.	「Phase contrast imaging of red blood cells using digital holographic interferometric microscope」 Varun Kumar, Gufran S. Khan, Chandra Shakher Third International Conference on Applications of Optics and Photonics (Proc. SPIE, Faro, Portugal) vol.:10453 2017年 8月
25.	「Influence of magnetic field on temperature of wick stablized micro diffusion flame using digital holographic interferometry」 Chandra Shakher, Varun Kumar, Shilpi Agarwal vol.:ico24/subject/Tu2A-03 研究会，シンポジウム資料等 2017年 7月
26.	「Measurement of temperature and temperature profile of wick stabilized micro diffusion flame under the effect of magnetic field using digital speckle pattern interferometry」 Pranav Kumar Pandey, Manoj Kumar, Varun Kumar, Chandra Shakher Optical Engineering vol.:56 No.:1 014106-014106頁 学術雑誌 2017年 1月 ISSN:00913286
27.	「Analysis of alcohol-water diffusion process using digital holographic interferometry」 Shilpi Agarwal, Manoj Kumar, Varun Kumar, Chandra Shakher vol.:9660 2015年 8月 ISSN:0277786X
28.	「Measurement of temperature and temperature profile of candle flame using holo-shear lens and Fourier fringe analysis technique」 Varun Kumar, Chandra Shakher Optical Engineering vol.:54 No.:8 084105-084105頁 学術雑誌 2015年 8月 ISSN:00913286
29.	「Temperature measurement of axi- symmetric butane diffusion flame under the influence of upward decreasing gradient magnetic field using digital holographic interferometry」 Varun Kumar, Manoj Kumar, Chandra Shakher SPIE Proceedings vol.:9660 No.:96600I-1 2015年 8月 ISSN:0277786X
30.	「Experimental investigation on butane diffusion flames under the influence of magnetic field by using digital speckle pattern interferometry」 Manoj Kumar, Shilpi Agarwal, Varun Kumar, Gufran S. Khan, Chandra Shakher Applied Optics vol.:54 No.:9 2450-2460頁 学術雑誌 2015年 3月 ISSN:1559128X
31.	「Study of heat dissipation process from heat sink using lensless Fourier transform digital holographic interferometry」 Varun Kumar, Chandra Shakher Applied Optics vol.:54 No.:6 1257-1266頁 学術雑誌 2015年 2月 ISSN:1559128X
32.	「Measurement of natural convective heat transfer coefficient along the surface of a heated wire using digital holographic interferometry」 Varun Kumar, Manoj Kumar, Chandra Shakher Applied Optics vol.:53 No.:27 G74-G83頁 学術雑誌 2014年 7月 ISSN:1559128X
33.	「Measurement of temperature and temperature distribution in diffusion flames using digital speckle pattern interferometry」 Manoj Kumar, Varun Kumar, Chandra Shakher Eleventh International Conference on Correlation Optics (Proc. SPIE) vol.:9066 90660Y頁 2013年 12月 ISSN:0277786X
34.	「Contouring of diffused objects using lensless Fourier transform digital moiré holography」 Md. Mosarraf Hossain, Gyanendra Sheoran, Varun Kumar, Chandra Shakher Applied Optics vol.:51 No.:21 5331-5339頁 学術雑誌 2012年 7月 ISSN:1559128X

講演・口頭発表等（学会発表）

1.	「Hilbert transform based four phase-shifting with shadow removal for 3D shape measurement using LCD projector-based fringe projection system」 Shiyuu Takata, Varun Kumar, Masayuki Yokota JIGER-Kick-off Symposium (International Symposium), Kunibiki Messe Matsue, Japan 2026年 2月
2.	「Single-Shot Depth-Resolved Fluorescence Microscopy」 Varun Kumar International Japan–India Global Education and Research Center (JIGER) Kick-off Symposium held at Kunibiki Messe, Matsue, Japan 2026年 2月
3.	「Surface Profile Measurement in off-axis FMCW-Digital Holography: Hologram Multiplexing Utilizing both Frequency-Modulated and non-Frequency-Modulated Light Sources」 Takuhiro Okamoto, Itsunori Okamoto, Sota Kawabata, Hikaru Hamada, Varun Kumar, Masayuki Yokota JIGER-Kick-off Symposium (International Symposium), Kunibiki Messe Matsue, Japan 2026年 2月
4.	「軸外しFMCW-ディジタルホログラフィにおける時空間周波数領域を用いた2波長多重記録」 川端颯太, 岡本逸議, 濱田光, Kumar Varun, 横田正幸 レーザー学会学術講演会第46回年次大会 2026年 1月
5.	「Digital Holography and Single-shot Fluorescence Microscopy: Application from Industry to Biology」 Varun Kumar, Yoshimi Ebi, Chandra Shakher, Quan Liu, Masayuki Yokota Multi-Spectral Radiation Analysis for Materials Innovation Symposium - From Cultural Heritages to Medical Applications (MSRAMI 2025), Nov. 28-29, 2025 2025年 11月
6.	「ロックインサーモグラフィとディジタルホログラフィ干渉法の併用による マルチモーダル計測法と電子部品の欠陥解析への応用」 横田正幸, 福島大晴, 徳田凌也, Kumar Varun 2025年日本非破壊検査協会秋季講演大会 2025年 11月
7.	「ロックインサーモグラフィとディジタルホログラフィ干渉 法による電子部品の欠陥検査法の研究」 Taisei Fukushima, Ryoya Tokuda, Varun Kumar, Masayuki Yokota 2025年非破壊検査総合シンポジウム 2025年 6月
8.	「Digital Holography and Its Applications in Engineering and Biosciences」 Varun Kumar International Conference on Microwave Optical and Communication Engineering (ICMOCE 2025) at IIT Bhubaneswar, Odisha, India 2025年 5月

委員会・学会役員等

1.	Co-Chair of a technical Session at international symposium "Multi-spectral Radiation Analysis for Industrial Applications" in Symposium MSRAMI 2025 at Session Co-Chair 2025年～ 2025年
2.	International Conference on Microwave Optical and Communication Engineering (ICMOCE 2025), IIT Bhubaneswar, India Cosponsored by IEEE and Springer Session Chair 2025年～ 2025年

学術雑誌の査読

1.	Applied Optics publisher:Optical Society of America (OSA)
2.	Electronics publisher:MDPI
3.	Optics Express publisher:1
4.	Optics Letters publisher:3
5.	Sensors publisher:MDPI
6.	Journal of Optical Society of America (JOSA) B publisher:Optical Society of America (OSA)- OPTICA
7.	Optics Express publisher:Optical Society of America (OSA)- OPTICA
8.	Optical Engineering publisher:Society of Photo-Optical Instrumentation Engineers (SPIE)
9.	Optics Letter publisher:Optical Society of America (OSA)

島根県を中心とした山陰地域に貢献する研究活動の改善の取組み

1.	In addition, I deliver a special lecture to third-year bachelor students of our department (with more than 30 students in attendance) on ‘Indian Culture and the Education System in India’. This was aimed at promoting international understanding and cross-cultural exchange among local students.
2.	October 1, 2024: I hosted students from Higashi High School (Matsue, San'in region) in our lab, explaining my research and showcasing ongoing experiments, contributing to local educational development in Shimane.
3.	To promote interest in higher education and research, I participated in university outreach activities. August 8, 2024: During the University Open House, I presented my research and conducted live experiments for visiting high school students from across Japan, using PowerPoint and hands-on demonstrations to enhance understanding of university-level research.