Functional design of semiconductor gas sensors for measurement of smell and freshness

Author

Egashira, Makoto

Author_Institution

Dept. of Mater. Sci. & Eng., Nagasaki Univ., Japan

Volume

2

fYear

1997

fDate

16-19 Jun 1997

Firstpage

1385

Abstract

Some important results of our research on semiconductor gas/odor sensors are reviewed. Our research is focused on observation of nonlinear I-V characteristics of sensors, elucidation of influences of reactivity and diffusivity of both objective and oxygen gases in a porous sensing layer, optimization of catalytic activity of sensing materials to objective gases, control of oxygen readsorption, and so on. Based on the important findings obtained, sensors are designed for fish smells such as trimethylamine and dimethylamine to measure freshness of fish

Keywords

Schottky barriers; adsorption; catalysis; food processing industry; gas sensors; O₂; SnO₂; catalytic activity; diffusivity; dimethylamine; fish freshness; fish smells; functional design; nonlinear I-V characteristics; objective gases; odor sensors; oxygen gases; oxygen readsorption; porous sensing layer; reactivity; semiconductor gas sensors; Conducting materials; Design engineering; Gas detectors; Gases; Grain boundaries; Marine animals; Semiconductor materials; Sensor phenomena and characterization; Varistors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid State Sensors and Actuators, 1997. TRANSDUCERS '97 Chicago., 1997 International Conference on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-3829-4

Type

conf

DOI

10.1109/SENSOR.1997.635496

Filename

635496