Wei GaoProf. Wei Gao is the Chair of the Precision Nanometrology Laboratory and Director of the Research Center for Precision Nanosystems at the Department of Fine Mechanics in the Graduate School of Engineering, Tohoku University, Japan. His research focuss on precision engineering, precision metrology, micro/nano-nanometrology, optical sensors, surface metrology, on-machine and in-process measurement, and motion measurement. Read More Read Less