10.1364/OPTICA.4.000298.v001 Kota Kumagai Kota Kumagai Satoshi Hasegawa Satoshi Hasegawa Yoshio Hayasaki Yoshio Hayasaki Visualization 1: Volumetric bubble display Optica Publishing Group 2017 Visualization Volumetric 20 March 2017 Optica optica display Mermaid 2017-03-20 00:00:00 Media https://opticapublishing.figshare.com/articles/media/Visualization_1_Volumetric_bubble_display/4922759 2D bubble graphics of “Mermaid” Originally published in Optica on 20 March 2017 (optica-4-3-298)