期刊
BIOSENSORS & BIOELECTRONICS
卷 26, 期 11, 页码 4301-4307出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2011.04.015
关键词
Electronic nose; Sensor array; Multi-walled carbon nanotube (MWNT); Adaptive interface
类别
资金
- National Science Council of Taiwan [NSC 97-2220-E-007-036, NSC 98-2220-E-007-017]
- Chung-Shan Institute of Science and Technology [CSIST-808-V207]
We report a fully integrated, portable, battery-operated electronic nose system comprising a bio-inspired two-layer multiple-walled carbon nanotube (MWNT)-polymer composite sensor array, a bio-inspired fast-adaptive readout circuit, and a microprocessor embedded with a pattern recognition algorithm. The two-layer MWNT-polymer composite sensor is simple to operate, and the membrane quality can be easily controlled. These two-layer membranes have improved sensitivity and stability. The fast-adaptive readout circuit responds to the sensor response, while tuning out the long-term constant background humidity, temperature, and odors. This portable electronic nose system successfully classified four complex alcohol samples 40 times for each sample; these samples were sake, sorghum liquor, medical liquor, and whisky. (C) 2011 Elsevier B.V. All rights reserved.
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