کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9700960 | 1462132 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sensing behaviors of polypyrrole sensor under humidity condition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The influence of temperature (0, 25, and 40 °C) and relative humidity (5, 10, and 20%) of polypyrrole (PPy) sensor were studied. The PPy sensors were prepared by chemical oxidative method. Initial resistance of the PPy sensor was increased with increase of humidity and decrease of temperature, respectively. Each sensitivity to methanol, water vapor, and mixture gas (methanol and water vapor) was measured, and then compared. Methanol and water vapor were recognized to different type gases in PPy sensors, and adsorption of methanol and water vapor was competed on the surface of sensors. The sensitivity was increased under low humidity and low temperature. The fastest response and recovery time was shown at 25 °C. The reproducibility of PPy sensor was excellent at various humidity conditions. The best operating temperature was investigated at 25 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 108, Issues 1â2, 22 July 2005, Pages 389-392
Journal: Sensors and Actuators B: Chemical - Volume 108, Issues 1â2, 22 July 2005, Pages 389-392
نویسندگان
Jae-Hyun Cho, Joon-Boo Yu, Jung-Suk Kim, Sung-Ok Sohn, Duk-Dong Lee, Jeung-Soo Huh,