Tetsuya Takeuchi received Ph. D from Meijo University in 1999. After working for Hewlett-Packard Labs Japan, Agilent Technologies Labs, Lumileds, and Canon, he joined again Meijo university as an associate professor in 2010, and became a professor in 2015. He has been involved in epitaxial growths of III-V compound semiconductors and designs/fabrications of LEDs, tunnel junctions, and VCSELs.