System control engineering, which was inspired by the invention of Watt's steam engine, is now an indispensable technology for automating various systems such as aircraft and robots. The system design theory that supports this technology is constantly evolving into a more sophisticated and beautiful system. In this field, we study cutting-edge nonlinear control theory, switching control theory, robust control theory, and system integration theory for solving the problems facing system control technology. In addition to this, through smart-grid, high-performance optimal control in the field of power electronics, power system stabilization, optimal tracking control of robots, feedback control using quantized data, etc. ， We are striving to develop control technology that contributes to society. 

Since electric energy can be highly efficiently converted to other energies such as magnetic and mechanical energies, its applied technologies are diverse. Our laboratory conducts educational researches on the characteristic analysis and design method of electric energy converting apparatuses based on a practical understanding of physical phenomena such as electromagnetics and circuit theory. We are specifically aiming at designing next-generation high-efficiency and high-energy-density electrical apparatuses using DC-DC power conversion technology, superconducting application technology, nonlinear magnetic application technology, etc. We are engaged in those developments based on both electromagnetic simulation and experimental approaches.

In our laboratory, we are studying the region from the atmosphere to the space around the Earth, especially the ionosphere. In the ionosphere, the phenomena, such as aurora borealis, due to the effects from the upper region occur because plasmas from the sun precipitate into the atmosphere. Those due to the effects from the lower atmosphere also occur because the atmospheric waves are generated by earthquakes and typhoons and the energy of the wave is transferred to the ionosphere. Therefore, the ionosphere is always fluctuated by the energy flux from above and below. Our research is based on the discovery of unknown phenomena in this area and the clarification of the cause of these phenomena. We aim to contribute to the use of space by humanity through our research. In international cooperation with researchers, we employ various antennas to observe radio waves in various bands in Japan and overseas and analyze various satellite data including GPS. 

We conduct education and research from the basics to the application of optoelectronic properties and optical devices of semiconductors including wide gap semiconductors. Optoelectronics is becoming more and more important in high-speed and large-capacity optical communication, large-capacity information recording, information safety, high-efficiency solar cells, and spectroscopic measurement for medical and life phenomenon search. We are investigating a wide wavelength range from ultraviolet to terahertz (THz), and using extreme measurement techniques such as ultrafast spectroscopy and far-infrared spectroscopy, we grasp the movement of atoms and electrons to clarify the physical phenomena in semiconductors. , We are engaged in exploratory research on the advanced quantum physics effects and the essence of light appearing in nanostructures, and making pioneering device proposals based on this research. 

Based on the semiconductor engineering and solid-state electronics, we are widely conducting education and research related to new functional electronic devices to develop future technologies. Recent research themes include, (1) nanosecond time-resolved analysis of organic electroluminescence panel, transistors, photovoltaics, (2)  development of novel printed electronics and printing of IoT devices, (3) development of new principle high-speed quantum phase transition transistor with strongly-correlated materials, (4) characterization of ultrathin & quantum devices, (5) development of advanced electromagnetism devices. We are engaged in research on the physical properties and device application of new electronic devices. 

The performance of electronic communication systems, such as mobile phones, is essentially dominated by the performance of the high-frequency part of the transceiver. In this field, we mainly aim to improve the performance of various high-frequency electronic circuits used for them, electronic elements used for them, and signal processing functions. Multi-disciplinary research on realization of high-performance and high-performance high-frequency filters and high-performance oscillators, development of optimization tools and simulation tools for their design, innovative communication methods, and realization of new signal processing functions doing. 

With a major theme of research related to modeling, analysis, design, and optimization of large-scale complex systems, we are researching mathematical methods and algorithms that realize these, both theoretically and practically. Specifically, (1) engineering applications of biological systems and ecosystems, (2) optimal design of low power consumption, high-performance VLSI and dynamically reconfigurable FPGA, (3) behavior control and emergence of intelligent robots (4) Application of soft computing centering on optimization technology to engineering systems, (5) Development and analysis of optimization methods using nonlinear dynamical systems such as chaotic dynamical systems, etc. 

We are conducting researches using electronic information technology. The main theme of our researches is to develop next-generation image/visualization systems such as 3D display and 3D microscope using holography, which is said to be the ultimate 3D imaging technology. To achieve this, speeding up calculations is essential. To that end, we are working on the development of dedicated hardware by LSI circuit design, and the construction of parallel systems using highly parallel processors such as GPUs. 

Artificial Intelligence (AI) is a research field that has operationalized, integrated, and developed basic theories from various fields. Our research includes the brain science and the mechanism of thinking. In particular, we focus on the "engineering-enabled" aspects of intelligence. More specifically, we aim to build systems that support people from the aspects of transportation (autonomous operation of cars, drones, and submersibles), energy planning, and logistics by reproducing the learning and evolution of intelligent cooperation, and competition among multiple humans and multiple robots. Since these problems are highly dependent on the environment, they involve many challenging issues not only optimality but also robustness to change, safety for humans, and white-boxing so that people can trust the solutions produced by AI.