Nitride semiconductors, which made a spectacular appearance in the 1990s with the success of blue light-emitting diodes, have now developed into white light sources for lighting with low power consumption and high durability, blue lasers for Blu-ray discs, ultraviolet light sources, and electronic devices for high power applications. In this lecture, we will introduce the current status of nitride semiconductors and the various possibilities and interests of nitride semiconductor materials, such as cubic nitrides and III-V-N mixed nitrides, which we are focusing on in this laboratory.

　In 2007, Professor Shinichi Morishita and his group at the Graduate School of Science completed the sequencing of the medaka genome. In 2007, Prof. Shinichi Morishita's group completed the decoding of the genome, and with the ease of genetic manipulation, such as transgenics and gene knockout, they have become a cutting-edge experimental animal. In addition, it is easy to create transgenic medaka that express GFP using various promoters. With these advantages, medaka is an excellent platform to visualize and analyze the biological reactions in the body as the expression of gene functions at the individual level. Recently, a number of GFP-based fluorescent probes have been developed to visualize various biological reactions at the cellular level. We aim to expand our understanding of biological reactions at the molecular level from the cellular level to the individual level by generating and analyzing transgenic medaka expressing these genetically encoded probes. In this seminar, we would like to introduce our laboratory's research on "glowing killifish" and provide seeds for academic fusion.

　In order to achieve global sustainability, it is necessary to tackle issues that involve various factors such as science and technology, corporate management, public policy, and institutional environment. Sustainability science aims to develop and apply new concepts and methodologies from an interdisciplinary perspective in order to understand the processes and mechanisms of the complex and dynamic interactions among natural, human, and social systems.