[14a-D63-1~10] 1.3 Novel technologies and interdisciplinary engineering

△ [14a-D63-9] Detection of Escherichia coli Using an Optical Disk Equipped with a Transmitted Light Detector

〇Hideyuki Shiramizu¹, Kuroda Chiaki¹, Ohki Yoshimichi^1,2, Shima Takayuki³, Xiaomin Wang³, Fujimaki Makoto^2,3 (1.GSASE Waseda Univ., 2.RIMST Waseda Univ., 3.AIST)

Keywords:Escherichia coli, Optical disk, Transmitted light

Escherichia coli (E.coli) is an index for hygiene and pollution of water. We are developing an optical disk device that can detect the presence of a single E.coli without its cultivation. Since we found by numerical calculations that transmitted light gives a clearer and more distinct difference between E.coli and other objects than reflected light, we have improved the device so that we can measure the transmitted light intensity, and have succeeded in detecting a single E.coli.