Detecting insect infestation using a polymer based sensor array
電子鼻用于受昆蟲侵害的植物揮發(fā)性氣體檢測
Kanchana A. Weerakoon∗, John H. Shu, Mi-Kyung Park, Maria A. Auad, Bryan A. Chin
Department of Materials Engineering, Auburn University, Auburn, AL 36830, USA
a b s t r a c t
An electro-active polymer based sensor array was designed, fabricated and tested to detect volatile organic compounds secreted by plants during insect infestation. The sensor array was inexpensive, and easy to fabricate and could be used for onsite detection of insect infestation. The array consisted of chemical resistor sensors with micro fabricated interdigitated electrodes coated with electro active polymers. Three types of polymers were used as active layers in this study: polythiophene, carbon/polymer and polyaniline. The polymer coatings were deposited onto the sensor platforms via drop casting and spin coating methods. The sensor array was exposed and found to be sensitive to a variety of phytochemical including -terpinene -pinene, p-cymene, farnesene, limonene and cis-hexenyl acetate. The sensor array created a unique fingerprint pattern for each of these chemicals. The fingerprints were further analyzed using principal component analysis.
設計、制作和測試了一種基于電活性聚合物的傳感器陣列電子鼻，用于檢測昆蟲侵擾過程中植物分泌的揮發(fā)性有機化合物。該傳感器陣列價格低廉，制作簡單，可用于現(xiàn)場昆蟲侵染檢測。該陣列由化學電阻傳感器和涂有電活性聚合物的微型交叉指狀電極組成。本研究使用三種聚合物作為活性層：聚噻吩、碳/聚合物和聚苯胺。采用滴注法和旋涂法將聚合物涂層沉積到傳感器上。傳感器陣列暴露在外，并發(fā)現(xiàn)對多種植物化學物質(zhì)敏感，包括 松油烯、異丙基甲苯、法呢烯、*和乙酸己烯酯。傳感器陣列為每種化學品創(chuàng)建了一個*的指紋圖譜。采用主成分分析法對指紋圖譜進行了進一步分析。
Keywords:Insect infestation、Polythiophene sensors、Carbon polymer composite sensors、Polyaniline、Sensor array
關(guān)鍵詞：昆蟲侵害；聚噻吩傳感器；碳聚合物復合傳感器；聚苯胺；傳感器陣列
