Schedule 3 5:30 PM - 5:45 PM [LEDIA-4-02] Manipulation of Eu luminescence in GaN:Eu-based microdisks Yutaka Sasaki1, Tomohiro Inaba1, Shuhei Ichikawa1, *Jun Tatebayashi1, Yasufumi Fujiwara1 (1. The University of Osaka)