A bio-inspired two-layer multiple-walled carbon nanotube-polymer composite sensor array and a bio-inspired fast-adaptive readout circuit for a portable electronic nose

作者：Wang L C; Tang K T^*; Chiu S W; Yang S R; Kuo C T

来源：Biosensors and Bioelectronics, 2011, 26(11): 4301-4307.

DOI：10.1016/j.bios.2011.04.015

• Electronic nose
• Sensor array
• Multi-walled carbon nanotube (MWNT)
• Adaptive interface

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.

• 出版日期2011-7-15
• 单位清华大学