Odor sensor

Details Odor sensor Odor sensor

2005-05-24

2009-08-18

Williams, Hezron (Department: 2856)

Measuring and testing

Gas analysis

Odor

Reexamination Certificate

active

07574893

ABSTRACT:
The present invention provides a biomimetic odor sensor that utilizes neither an oxide semiconductor nor a quartz oscillator, is hardly affected by the atmospheric moisture, simple in structure, inexpensive in production cost, fast in reaction rate, of a wet type, and provided with the condition close to the condition of the nasal mucosa of the human olfactus organ. The sensor10according to the present invention includes a mixed material12in which β-carotene and a reducing agent to prevent the oxidation of the β-carotene are dispersed in a viscous liquid, and a cathode electrode16and an anode electrode18are disposed so as to be in contact with the mixed material12.

REFERENCES:
patent: 1-259250 (1989-10-01), None
patent: 7-12767 (1995-01-01), None
Hiroshi Asai, “Odor Detector,” Solid state Physics (Kotai Butsuri in Japanese), 10(7):369-373 (1975).
K. Iriyama et al., Olefactory Biophysical Chemistry—Effect of Gas Adsorption on the Electric Conductivity of Amorphous Thin Films of β-Carotene and Oxidized β-Carotene-, Jikeikai Medical Jounsal, 37(3):299-310 (1990).
Mitachi et al., “Selection of Optimal Desiccants for Use in Ordor Sensors,” The 50thSpring Meeting of Japan Society of Applied Physics and Related Societies, 29:B-13 (Mar. 29, 2003).

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