Generation of ozone foam and its application for disinfection Keisuke Hiragaki, Tomiya Ishimaru, Masaru Nakanishi, Ryouji Muraki, Masanori Nieda and Chobei Yamabe Eur. Phys. J. Appl. Phys., 71 2 (2015) 20810 Published online: 15 July 2015 DOI: 10.1051/epjap/2015140508