2023-03-16 - 18:34 ACS publication peer reviewer 2022.jpg Prof. Ohkawa received a Certificate of Recognition & Appreciation as 2022 ACS Publications Peer Reviewer, American Chemical Society. Related Persons Kazuhiro Ohkawa Professor, Electrical and Computer Engineering CEMSE ECE ECODEVICES metalorganic vapor-phase epitaxy nitride semiconductor micro-light-emitting diodes