JRM Vol.24 No.1 pp. 47-54
doi: 10.20965/jrm.2012.p0047


Optical Odor Imaging by Fluorescence Probes

Hirotaka Matsuo*, Yudai Furusawa*, Masashi Imanishi**,
Seiichi Uchida***, and Kenshi Hayashi*

*Department of Electronics, Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

**Graduate School of Systems Life Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

***Department of Advanced Information Technology, Graduate School of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

May 2, 2011
July 6, 2011
February 20, 2012
odor imaging, fluorescence, odor sensor, odor source localization
Odor gas detection is important for the detection of explosives, environmental sensing, biometrics, foodstuffs and a comfortable life. Such odor-source localizations is an active research area for robotics. In this study, we tried to detect odor chemicals with an optical method that can be applied for the spatiotemporal detection of odor. We used four types of fluorescence dyes; tryptophan, quinine sulfate, acridine orange, and 1-anilinonaphthalene-8-sulfonate (ANS). As analyses, we measured the following four odor chemicals, 2-furaldehyde, vanillin, acetophenone, and benzaldehyde. The fluorescence-quenching mechanism of PET (Photoinduced Electron Transfer) or FRET (Fluorescence Resonance Electron Transfer), which occur between fluorescence dyes and odor compounds, could prevent unintended detection of various odorants that is caused by their unspecific adsorption onto the detecting materials. The fluorescence changes were then observed. Thus, we could detect the odor substances through fluorescent quenching by using the fluorescence dyes. Odor information could be obtained by response patterns across all the fluorescence dyes. Moreover, we captured odor images with a cooled CCD camera. Shapes of the targets that emitted odor could be roughly recognized by the odor-shape images. From the spatiotemporal images of odors, twodimensional odor expanse could be obtained.
Cite this article as:
H. Matsuo, Y. Furusawa, M. Imanishi, S. Uchida, and K. Hayashi, “Optical Odor Imaging by Fluorescence Probes,” J. Robot. Mechatron., Vol.24 No.1, pp. 47-54, 2012.
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