Research keywords (5)：
光計測
, inverse problem
, Numerical calculation
, light propagation
, radiative transfer
Research theme for competitive and other funds (26)：
2023 - 2026 Interference effects caused by multiple scattering of the near-infrared electric fields in super-concentrated solutions
2023 - 2025 Model equations for extracting optical absorption components from photoacoustic signals
2023 - 2024 Near-infrared spectroscopy using scattered light for non-destructive evaluation of food qualities
2022 - 2023 Nondestructive measurement of ingredients inside stuffed bread using light
2022 - 2023 Study of the c orrelation between structural and light scattering properties in soybean curd for nondestructive monitoring
2022 - 2023 Numerical study of light and photoacoustic propagation in the human neck for photoacoustic imaging
2020 - 2023 Elucidation of non-equilibrium phase change at gas-liquid interface mechanism for mixture gas and its application to molecular multi-phase fluid dynamics
2019 - 2023 A high-sensitive time-domain method to identify fluorescence targets in thick biological tissue
2018 - 2023 Investigation of active matter mechanics by surface plasmon resonance observation
2021 - 2023 Multiphysics modeling of light scattering, light fluctuation, and particle diffusion in colloidal suspensions
2020 - 2023 Interference effects on radiative transfer in dense colloidal suspensions
2020 - 2021 Modeling of light and pressure propagation in biological tissue volumes for photoacoustic imaging
2018 - 2021 Study of interference of the radiative transfer induced by local and global structures of biological tissues and development of theoretical calculations of the light scattering properties
2017 - 2020 Surrounding gas effects on instability at solid-gas-liquid three-phase contact line in high-speed liqdui film flow
2019 - 2020 Nondestructive measurement of bread qualities using the near-infrared light
2016 - 2019 Determination of kinetic boundary conditions for gas-vapor binary mixture and its application
2018 - 2019 Improvement of light propagation model for thyroid cancer diagnosis by optical computed tomography
2015 - 2018 Development of monitoring system of oxygenated hemoglobin supply to fetus and placenta based on propagation of light and acoustic wave
2015 - 2018 Determination of optical properties for biological tissue based on radiative transport model in fine structure of biological tissue
2016 - 2017 Non-destructive evaluation of the white bread qualities using diffuse optical tomography
2014 - 2017 Condensation effect on high-speed liquid-film flow instability at a liquid-droplet impact on a solid surface in a vaporous environment
2016 - 2017 Examination of the relation between light scattering and structures for agricultural products by diffuse optical tomography
2014 - 2016 Study of unsteady heat and mass transfer at the strong non-equilibrium interface ugin mean-field kinetic theory
2015 - 2016 Non-destructive evaluation of the melon qualities by near-infrared imaging
2014 - 2015 Cancer detection of the human neck by noninvasive optical imaging
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Papers (62)：
Kazumichi Kobayashi, Kota Aoki, Hirofumi Tabe, Hiroyuki Fujii, Toshiki Nara, Hideyoshi Takashima, Nobuyuki Oshima, Masao Watanabe. Couette flow at high Knudsen number between wall and liquid boundaries. Physics of Fluids. 2023. 35. 082021. 1-8
Hiroyuki Fujii, Koyata Nishikawa, Hyeonwoo Na, Yuki Inoue, Kazumichi Kobayashi, Masao Watanabe. Numerical study of light scattering and propagation in soymilk: Effects of particle size distributions, concentrations, and medium sizes. Infrared Physics & Technology. 2023. 132. 104753. 1-9
Kotaro Ohashi, Kazumichi Kobayashi, Hiroyuki Fujii, Masao Watanabe. Vapor condensation induced by fast-moving liquid film in the presence of noncondensable gas molecules. International Communications in Heat and Mass Transfer. 2023. 142. 106622. 1-8
Hiroyuki Fujii, Iori Terabayashi, Kazumichi Kobayashi, Masao Watanabe. Modeling photoacoustic pressure generation in colloidal suspensions at different volume fractions based on a multi-scale approach. Photoacoustics. 2022. 27. 3. 100368, 1-10
Ryunosuke Adachi, Kazumichi Kobayashi, Hiroyuki Fujii, Toshiyuki Sanada, Masao Watanabe. Wetting failure in the early stage of water drop impact on a smooth solid surface. Physics of Fluids. 2022. 34. 062116. 1-13
Fujii Hiroyuki, Yamada Yukio, Hoshi Yoko, Kobayashi Kazumichi, Watanabe Masao. Numerical study of light scattering in the human neck for diagnosis of thyroid cancers by optical tomography. Extended abstract of the 12th CME International Conference. 2018. OS12. 2
Biomedical Optical Imaging -Fundamentals and Clinical Applications
NTS Inc. 2021 ISBN:9784860437299
Education (3)：
2009 - 2012 Tohoku University Mechanical Engineering Ph.D course
2007 - 2009 Tohoku University Mechanical Engineering Master course
2003 - 2007 University of Tsukuba First Cluster of Colleges,College of Natural Sciences
Professional career (1)：
博士(工学) (東北大学)
Work history (6)：
2023/04 - 現在 Hokkaido University Faculty of Engineering Division of Mechanical and Space Engineering Associate Professor (tenure track)
2023/08 - 2023/09 Roskilde University Department of Science and Environment Mathematics and Physics (IMFUFA) Visiting researcher
2019/04 - 2023/03 Hokkaido University Faculty of Engineering Mechanical and space engineering Assistant professor (tenure)
2019/09 - 2019/12 University of Michigan Electrical engineering and computer science Visiting scholar
2014/04 - 2019/03 Hokkaido University Faculty of Engineering, Division of Mechanical and Space Engineering Assistant Professor (tenure track)
2012/04 - 2014/03 Tokyo Metropolitan Institute of Medical Science Integrated Neuroscience Research Project Post Doctral Researcher (JST researcher)
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Committee career (7)：
2022/04 - 現在 日本機械学会 流体工学部門 北海道地区流体工学研究会 幹事
2022/04 - 現在 Consortium of Industry-Academia Collaboration on Bio-Optical Imaging and Spectroscopy committee member
2021/04 - 現在 Japan council for near infrared spectroscopy Officier
2023/06 - 2024/07 The fifth International Workshop on Nano-Micro Thermal Radiation, Nanorad 2024 Second Secretary General
2022/04 - 2024/03 日本機械学会 熱工学部門 広報委員会 委員
2015/04 - 2017/03 日本機械学会 流体工学部門 広報委員 ニューズレター担当
2015/01 - 2015/10 日本機械学会 2015年度年次大会 実行委員会 委員
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Awards (10)：
2024/03 - The Japan Society of Mechanical Engineers Awards for supervised students, Miura Award
2023/11 - The Optical Society of Japan Optical Paper Award 2023 "Model equations of light scattering properties and a characteristic time of light propagation for polydisperse colloidal suspensions at different volume fractions"
2023/03 - Japan Society of Mechanical Engineers Hokkaido Branch Awards for supervised students, Best presentation award "Light scattering properties for monitoring of a coagulation process in soymilk"
2023/03 - Hokkaido University Faculty of Engineering The FY2022 Faculty of Engineering Young Faculty Award
2022/11 - Japan Council for Near Infrared Spectroscopy (JCNIRS) Awards for supervised students, 38th NIR Forum Student Travel Award "Numerical study of the near-infrared light scattering properties by molecular dynamics simulations and electromagnetic theory"
2022/06 - Japan Association for Chemical Innovation 11th JACI Prize for Encouraging Young Researcher "Development of near-infrared spectroscopy to evaluate the dispersion stability in colloidal suspensions"
2022/03 - Konica Minolta Science and Technology Foundation Konica Minolta Imaging Science Encouragement Award FY2021 「Non-destructive evaluation of the particle size distribution for dense colloidal suspension using scattered light」
2021/11 - Japan Council for Near Infrared Spectroscopy (JCNIRS) Awards for supervised students, 37th NIR Forum Student Travel Award 「Multiphysics model of photoacoustic waves induced by near-infrared laser」
2021/10 - The International Council for NIR Spectroscopy (ICNIRS) Awards for supervised students, Best Poster Award of NIR2021 [Study on near-infrared light scattering in colloidal suspensions using time-resolved measurements]
2020/11 - Japan Council for Near Infrared Spectroscopy NIR Advance Award Modeling of light scattering in biological tissue, agricultural products, and foods
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Association Membership(s) (4)：
The Optical Society of Japan
, The Heat Transfer Society of Japan
, THE JAPAN SOCIETY OF MECHANICAL ENGINEERS
, THE PHYSICAL SOCIETY OF JAPAN
