[Category Ⅲ] Science on social and environmental complex systems
Professor Jun Tanimoto , Assistant Professor Yoshiko Katahira,
To solve environmental problems with bringing meningul provisions to our society, we should model complex systems as literally they are, not to much simplified. For ensuringn such modeling, we do need to take a bottom-up approach not relying on a conventional analytical approach from top-down viewscope. In the laboraotory, we explored various studies with intensive scientific passions so as to clarify the mechanisms of 'Human-Environemnt-Social system' by employing applied mathematics and social physics underpined by complex science, evolutionary game theory, non-linear dynamics and multi-agent simulation.
dillema structure in complex science
disease spread machanisms
traffic flow dynamics
[Category Ⅲ] Space Environmental Fluid Dynamics
Department of Earth System Science and Technology
Associate Professor Shuichi MATSUKIYO , Assistant Professor Shogo ISAYAMA,
Space is filled with plasma. In our heliosphere the main source of plasma is the sun. Magnetospheres of planets are connected with the sun via the plasma filling the interplanetary space. Their behaviour is influenced in many ways by solar activity. The heliosphere itself is exposed to interstellar space which is also filled with interstellar plasma... We study a variety of space environments from near Earth to distant high energy objects. We also work to develop the propulsion techniques of spacecraft by controlling plasma.
Physics of collisionless shocks Nonlinear waves and turbulence in space plasma Acceleration and transport of cosmic rays Relativistic plasma High density radiofrequency plasma
[Category Ⅰ] Functional Inorganic Materials Chemistry
Chemistry and Materials Science
Professor Hisahiro Einaga , Associate Professor Hajime Hojo,
Our group focus on synthesis, performance, and characterization of functional inorganic catalysts with emphasis on metal nanoparticles and complex metal oxides for energy and materials conversion and for environmental protection. We specialize in the development of static and dynamic characterization of these materials using transmission electron microscopy and synchrotron radiation facilities.
Development of supported metal catalysts and complex metal oxides with high catalytic activities
Structure-performance relationship for functional inorganic catalysts
Development of novel static and dynamic characterization methods of inorganic catalysts using transmission electron microscopy and synchrotron radiation facilities
[Category II] Energy Chemical Engineering
Plasma and Quantum Science and Engineering
Associate Professor Kazunari Katayama , Assistant Professor Makoto Oya,
With the aim of developing attractive next-generation energy systems, we are engaged in education and research in the fields of chemical engineering such as process engineering and thermal mass transfer engineering. Through fundamental experiments, we try to model chemical reactions and mass transfer phenomena, and then to use numerical simulations to pursue optimal systems. In the development area of most advanced science and technology, there are many situations in which it is difficult to predict phenomena based on just conventional knowledge.In our laboratory, we are challenging to correctly understand and model mass transfer phenomena occuring in special environments such as the interface between plasma or supercritical CO2 and solid walls, the flow field of high-temperature melts (liquid metals and molten salts), and the field of nuclear transmutation reaction by neutrons. Additonally, we are also actively studying on the hydrogen production using solid electrolyte cell or plasma, and environmental dynamics of tritium, which is a radioactive hydrogen isotope. These scientific achievements will be useful for the realization of nuclear fusion reactors, next-generation fission reactors, and a society utilizing hydrogen energy and renewable energy.
・Development of fuel cycle system in fusion power plants.
・Modeling of tritium mass transfer phenomena in soils and plants
・Development of liquid metal and molten salt circulation system
・Development of hydrogen production / extraction technology using plasma, solid electrolytic cells, etc.
[Category Ⅰ] molecular spectroscopy
Chemistry and Materials Science
Professor Akira HARATA , Associate Professor Akihiro YABUSHITA , Assistant Professor Toshio ISHIOKA,
New analytical methods are essential for frontier sciences. Our laboratory develops new measurement methods for studying the structure, reaction, and function of molecules, and keeping in mind the application to solve various social problems related to materials science, the purpose is to be involved in the elucidation of current difficulties that are interesting in basic science. In particular, we have pioneered new spectroscopic measurement methods for molecules using laser and synchrotron radiation, and are expanding their applications from basic analytical chemistry and physical chemistry to environmental chemistry, biochemistry, and astrochemistry. This laboratory is an internship-compatible laboratory for technical college collaborative education programs. For applications and questions, please contact us from the bookmark list or the laboratory online interview form after bookmarking.
●Development of ultra-sensitive and high-precision measurement methods using "heat, ions, fluorescence, harmonics" generated by irradiation with laser or synchrotron radiation
●Development of molecular analysis methods using molecularly imprinted electrode
●Elucidation of molecular behavior in micro / extreme environments such as water and ice surface, and various scientific phenomena in vivo / environment
[Category Ⅰ] Quntum Chemistry
Chemistry and Materials Science
Professor Yuriko Aoki,
We are creating an efficient calculation method to elucidate materials at atomic and molecular levels by quantum chemistry based on the molecular orbital (MO) method, as well as designing new functional materials and analyzing catalytic reactions. In particular, we are aiming to design functional properties using supercomputers by analyzing the electronic states of nanotubes, surface, and biopolymers like DNA/RNA/Proteins using proprietary highly accurate method. There, to elucidate the principles of physical properties and reactions, our unique orbital interaction analysis method is also incorporated. Along with the construction of novel methods that contribute to pre-/reverse- synthesis design such as magnetism, conductivity, optics and battery characteristics, machine learning using neural networks and novel multi-scale methods using dynamics are also being developed.
● Development of accurate and fast quantum chemistry calculation method -Elongation method- and DNA/RNA data science
● Structural / characteristic analysis of solid surface, homogeneous / non-homogeneous / biological-catalytic reactions
● Theoretical analysis and design of ferromagnetism, conductivity, nonlinear optics, battery materials, etc.
● Development and application of orbital interaction analysis for functional elucidation-Through Space / Bond analysis method
● Computational chemistry related to CO2 adsorption and polymer degradation prevention that contribute to environmental problems
[Category Ⅲ] Urban Environmental Sciences
Professor Aya Hagishima , Associate Professor Naoki Ikegaya,
Reducing energy usages is a common goal for human beings for acheving sustabnable society in the future. At the same time, we pursue comfortable and hygienic environment in urban spaces. This laboratory deal with studies to clarify physical phenomena in thermal-fluid dynamics as well as to acheive sustanable life style in urban area by employing thermal conduction and fluid dynamics theories.
Application study of sustainable building and environemnt
[Category II] Ionized Gas Dynamics Laboratory
Device Science and Engineering
Yukihiko Yamagata , Associate Professor
Plasma and laser processing using the advantage of ionized gas dynamics can potentially cause a variety of unique physical/chemical interactions, and is widely used as one of the advanced technologies for supporting sustainable society in various research fields such as electronics, material science, and environmental science. Our group tries to develop next generation technologies by application of plasmas and lasers. These include spectroscopic characterization of optical/electronic device systems, development of new-type optical sources, decomposition of environmental pollutants, development of electronic materials and devices operable under harsh environments, and development of biomedical materials and devices compatible with the human body.
1. Study of plasma and laser processing by laser diagnostics
2. Remote measurement of temperature/strain of semiconductor devices
3. Synthesis of low-k films using DUV pulsed-laser deposition
4. Field emission devices using nanostructured materials
5. Diodes and capacitors using wide band gap semiconductors for high temperature condition
6. Surface functionalization and biological characterization of ultrahard materials
[Category Ⅲ] Architectural Environmental Engineering
Mechanical ans Systems Engineering
Professor Kazuhide Ito , Assistant Professor Kazuki Kuga,
The overarching objectives of our research team are to develop a comprehensive and universal CSP (i.e., an in silico human model or computer simulated person) for indoor environmental quality assessment; and to develop an integrated numerical simulation procedure for airflow, temperature, and contaminant transport by CFD (computational fluid dynamics) technique using the newly created CSP.
Developmemtn of in silico human model
Inhalation exposure analysis by Physiologically-Based Pharmacokinetics
Airborne transmission analysis of virus laden droplet in infoors
Thermal comfort and sensation analysis
[Category II] Electronic Physical Device Engineering
Device Science and Engineering
Professor Tsuyoshi YOSHITAKE , Assistant Professor Hiroshi NARAGINO,
We carry out research on processes and evaluation technologies, including elemental technologies for preparing sensing materials and fabricating devices. Physical vapor deposition methods such as sputtering, laser ablation, and coaxial arc plasma deposition are mainly employed for growing sensing materials in thin film, and we actively employ advanced lasers as new elemental technologies for device formations. Our lab comprises Japanese students coming from other universities and Kosen and foreign students.
● Development of sensors and photovoltaics that operate in extreme environments employing wide gap semiconductors such as diamond and gallium oxide.
● The new process development for forming quantum centers in diamond and their applications to quantum sensors bio-makers
● Spin injection into semiconductors and creation of semiconductor spin devices