Student written Research Laboratory Guidebook 2025Nagaoka University of Technology

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Nanoelectronics Laboratory

Associate Professor / UNUMA Takeya
  • New functions in the terahertz/infrared region
  • Nanometer World
  • Polite instruction and free atmosphere are compatible!

Associate Professor / UNUMA Takeya
Prof. Unuma was assigned to the current position in November 2014. He is polite to students and gives careful instruction and advice. He always handles a lot of jobs as the lab director, walking three times faster than normal. He likes watching sports, playing table tennis, and playing Shogi (Japanese chess).

Research Content

We manipulate quantum effects by designing nanostructures and molecular structures in semiconductor materials and explore new optoelectronics beyond traditional optical phenomena and transport phenomena. We treat both inorganic semiconductors (superlattice structures etc.) and organic semiconductors (conjugated polymers etc.), with an emphasis on their functionalities for the technologically immature terahertz/infrared region, which is located between the regions of light and radio waves. These studies will lead to next-generation solid-state terahertz sources and flexible optoelectronic devices. If you join us, you will be able to perform experiments making full use of high-performance equipment such as femtosecond lasers.

30-femtosecond-class ultrashort pulse laser and homebuilt terahertz gain measurement system

A Day in the Lab

Currently, 8 students belong to the lab. Because the professor is polite and relatively young, he keeps the lab with such a nice atmosphere that students feel free to have discussions and ask questions. We carry out everyday research for hours including the core time from 10 to 17 o’clock on weekdays, and report progress and introduce the literature in seminars once a week. We feel that these activities in the lab develop our thinking and practical skills, and presentation skills. Join us and enjoy sports, trips, etc. together as well as research!

Experiment scene

Thesis Subjects

  • (M)Study on the terahertz conductivity of polymer-based semitransparent composite materials
  • (M)Study on ultrafast ballistic conduction in inorganic and organic semiconductors
  • (M)Consideration for the control of Bloch oscillations in semiconductor superlattices on the basis of their internal and external structures

The number of
PhD Graduates


Major employers of Graduates

  • Sankosha Corp.
  • JOLED, Inc.
  • Nippo Electronics Co., Ltd.
  • Tsuzuki Manufacturing Co., Ltd.
  • Furukawa Electric Co., Ltd.
  • TOMOEGAWA Co., Ltd.
  • ALPS ALPINE Co., Ltd.
  • ADTEC Engineering Co., Ltd.
  • Kioxia Corporation
  • TAIYO YUDEN Co., Ltd
Writer : SATO Yoshinori, Electrical, Electronics and Information Engineering
(National Institute of Technology, Nagaoka college)