This paper explains our movement of 2021-2022. Agenda is as follows. Technical Committee on Frontier in Education, Cooperation with Ethics Committee, Cooperation with Committee on Social Engagement, Special Topic Session in 2022 Annual Conference of Fundamentals and Materials Society, and Member.

The main objective of HEE is to examine the direction in which electrical engineering should move in the years ahead by studying the past. Electrical engineering history constitutes the basis of technologies that we should develop. It is the starting point from which we should approach the future. This paper introduces recent activities of the committee.

This report briefly presents activities of Technical Committee on Electromagnetic Theory (EMT), IEEJ. Our committee is now implementing the activities on 2021, which includes three times of the technical committee meeting and four times of technical committee conference. The report also contains three research topics presented in the technical committee meeting on EMT.

The technical committee on electromagnetic compatibility (EMC) was established under the Fundamentals and Materials Society (FMS), the Institute of Electrical Engineers in Japan (IEEJ) in 1999. Since then, researches and investigations related to this field have been conducted actively in the committee. In this report, trends and current activities in the research field of electromagnetic compatibility are summarized.

This report introduces recent activities of the Technical Committee on Electrical Discharges, Plasma, and Pulsed Power (EPP). The major research subjects and aims of the technical committee on EPP, and the recent activities of the technical committee, such as technical meetings, international conferences, investigation committees are reported.

This article reports the topics of the field in light application and visual science, the activities of the technical committee (TC-LAV) and the introduction of research of technical meeting on light application and visual science of IEEJ.

The IEEJ Technical Committee on Instrumentation and Measurement has explored key technologies in this field through technical meetings and research committees. Its recent activities and some leading research results are presented.

This paper reviews the latest trend and front line of research activities in the field of dielectrics and electrical insulating materials (DEI) according to the papers presented in the 53rd Symposium on Electrical and Electronic Insulating Materials and Applications in Systems held by the Technical Committee of Dielectrics and Electrical Insulation (TC-DEI), IEEJ, on Sept. 5 - 7, 2022, at Katahira Sakura Hall of Tohoku University, Japan, as a face-to-face meeting. The recent activities related to TC-DEI are also introduced briefly.

Research on quantum computers is actively carried out all over the world due to their high computing performance utilizing quantum superposition states in quantum bits (qubits). Currently, qubits based on solid-state devices using superconductor or silicon devices are the most promising because of its controllability and scalability. These devices are usually placed at cryogenic temperatures, around several mK, to reduce the thermal noise for the qubit. One obstacle for these systems is the necessity of a large number of control and readout microwave lines to connect the qubits with room temperature electronics. To overcome this issue, much research on cryogenic interface circuits to connect qubits and room-temperature electronics has recently proceeded. The investigative committee of the Institute of Electrical Engineers of Japan investigated the front-line research on this topic. In this paper, we summarized the investigation results.

To realize the carbon neutral society, so many efforts are now been continued all over the world. In this paper, recent activities of the Technical Committee on Magnetics are described, and the contribution of magnetics community to the realization of carbon neutral society is reported.

The direction of magnetization in which the magnetic field becomes the strongest in the x-axis direction in the spherical coordinate system is used. Its magnetic field depends on the φ direction in the spherical coordinate system, i.e., strongest at the top (φ = 0) and the bottom (φ = π), and the side (φ = π ⁄ 2) becomes the weakest. Therefore, when segmenting, it was divided to include the top and the bottom parts. In addition, in order to make it an optimal segmentation, it is effective to make the range of the top and bottom divisions wide, the sides narrow, and the direction of magnetization close to the top and the bottom directions. By optimizing in this way, the magnetic field is larger than the equal division. For example, it was about 1.09 times stronger in three divisions. This was confirmed by the experiment. However, there is a problem that the demagnetic field in the center becomes strong by the optimizing. The type of division which is strong in this problem is also introduced.

Solid Oxide Fuel Cells (SOFCs) generate electricity efficiently for high reaction activity and internal reforming of hydrocarbons at high temperatures, which consequently have the potential to replace conventional thermal power generations. It is expected to adjust the output with voltage whenever possible when the scale of SOFC enlarges more than the megawatt-class to reduce transmission loss. Our group aims to establish the design guideline for high-voltage insulation in high-temperature oxidizing and reducing atmospheres. This paper describes the creepage distance dependency of DC breakdown voltage in hydrogen assumed an anode environment. The authors measured the characteristics of alumina at 700 - 900°C and compared them to that in air assumed a cathode environment, which was clarified in a previous report. In both atmospheres, the results show that the breakdown mechanism follows Townsend ’s theory in a wide range; however, it affected by space charge in a region of specific creepage distances. Moreover, creepage distance to obtain the same breakdown voltage and the mechanism transition in hydrogen is approximately twice that in air. It is suggested that the mean free path and ionization index for impact ionization could govern the relationship between creepage distance and breakdown strength, regardless of the gas type, hydrogen or air.

In this paper, we report on a one-step production method of gold nanostructured films for a surface-enhanced Raman scattering (SERS) chip, expected to be an advanced device for high-sensitive molecular detection, by a pulsed laser ablation method. Surface images, taken by atomic force microscopy, revealed that the gold nanostructured film on a SiO₂ substrate have dome-shaped nanostructures. Pattern of x-ray diffraction of the gold nanostructured films showed existence of an Au(111) crystalline and intensity of it was increased with increment of the laser pulses from 5000 to 15000. Optical transmittance spectra of the gold nanostructured films on SiO₂ showed that significant redshift of the absorption edge from 582 to 632 nm with increasing the number of the laser pulses. To evaluate the so-called enhancement factors of the SERS chips fabricated in this study, we measured SERS activation signals from the gold nanostructured films decorated with 4-mercaptobenzoic acids by a Raman spectroscopic system equipped with two different laser beams (532 and 785 nm). Using a 785 nm wavelength laser beam, the SERS activation signals were detected clearly from the gold nanostructured film produced with 15000 pulses. From that measurement, we approximately calculated the enhancement factor for that nanostructure as 1.4×10⁵.

Electric double layer capacitors (EDLCs) are attracting attention as a type of storage battery with high-speed charge-discharge and long life. However, the withstand voltage of the aqueous electrolyte is approximately 1.2 V, which is the voltage at which electrolysis of water occurs, and there is a problem that it lacks energy density. In this study, sodium polyacrylate was added to the electrolyte to gelatinize it and prevent electrolysis of water, thereby improving the withstand voltage up to 3.5 V and obtained energy density of 4.6 Wh/kg.