大阪市立大学
Yokoyama born in Osaka, Japan, received his bachelor's degree in Physics from Osaka City University (1971), and master's (1973) and PhD (1984) degrees in Engineering from the Graduate School of Engineering Science at Osaka University. He joined the Semiconductor Devices Laboratory of Fujitsu Laboratories Ltd. in 1973, where he was subsequently named a Fellow and General Manager of its Nanotechnology Research Center in 2000. He is also Visiting Professor of the University of Tokyo.