Student written Research Laboratory Guidebook 2025Nagaoka University of Technology

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Energy material lab.

Professor / TAKEDA Masatoshi  Assistant Professor / BABA Masaaki
  • Don't throw away the waste heat . It's "mottainai".
  • We aren't creating only materials, our future too.
  • If you don't give up, You will find a way definitely.

Professor / TAKEDA Masatoshi and Assistant Professor / BABA Masaaki
Prof. Takeda is always gentle to us and he always gives us earnest advices even if he is busy. He tells us instructive stories (sometimes funny stories) based on his experience. We can feel free to ask Prof. Baba because he is very friendly, and he gives us valuable suggestions.

Research Content

We are researching about "thermoelectric material" and "heat storage material". Currently, a lot of energy is wasted as heat.Taking a car as an example, about 70% of the energy in gasoline is released to the environment as heat and is not effectively utilized. Thermoelectric materials can convert thermal energy directly into electrical energy, thus it can generate electricity from waste heat. We are also studying vanadium dioxide (VO2) that is a latent heat storage material. This material is a promising material for thermal management in electronic devices.

Picture of experimental equipment for measuring temperature distribution

A Day in the Lab

We have a morning seminar from 8 am every weekday to present and discuss about our research progress. The aim of this seminar is to get advices and opinions from professors and other members. After the seminar we carry out research at our own pace.
In addition, even if you have no specialized knowledge when you are assigned to this laboratory, you can get enough knowledge to proceed your research by attending study groups held in our laboratory every week.

Picture of the morning seminar

Thesis Subjects

  • (M)Effect of crystallization conditions of amorphous VO2 deposited by sputtering on the physical properties of the film
  • (M)Effect of polarity control by elements doping on the thermoelectric properties of β-FeSi2/Si composites
  • (M)Development of design method for composite thermoelectric materials using thermal-electrical network model ~Design parameter tuning based on Bayesian optimization~

The number of
PhD Graduates


Major employers of Graduates

  • Tokyo Electron Ltd.
  • OMRON Corporation
  • Seiko Epson Corporation
  • YKK AP Inc.
  • Toshiba Mitsubishi-Electric Industrial Systems Corporation
  • DOWA Holdings Co., Ltd.
  • Okuma Corporation
Writer : Mochida Ryugo, Mechanical Engineering
(National institute of Technology, Oyama College)