Akinori Takeyama is currently a principal researcher of the Quantum Materials and Applications Research Center (QUARC), the Takasaki Advanced Radiation Research Institute, the National Institutes for Quantum Science and Technology (QST). He received his Ph.D. in metallurgy from Tohoku University in 2003. After receiving his Ph.D, he joined the Japan Atomic Energy Research Institute (now QST), Japan, in 2003. His main research interests are radiation effects on semiconductor materials and devices. In particular, he studies the radiation-induced failures of devices and circuits due to the total ionizing dose effect (TID) for applications used in radiation environments, including nuclear facilities or space.