detecting insect infestation using a polymer based sensor array
电子鼻用于受昆虫侵害的植物挥发性气体检测
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.
设计、制作和测试了一种基于电活性聚合物的传感器阵列电子鼻，用于检测昆虫侵扰过程中植物分泌的挥发性有机化合物。该传感器阵列价格低廉，制作简单，可用于现场昆虫侵染检测。该阵列由化学电阻传感器和涂有电活性聚合物的微型交叉指状电极组成。本研究使用三种聚合物作为活性层：聚噻吩、碳/聚合物和聚苯胺。采用滴注法和旋涂法将聚合物涂层沉积到传感器上。传感器阵列暴露在外，并发现对多种植物化学物质敏感，包括 松油烯、异丙基甲苯、法呢烯、*和乙酸己烯酯。传感器阵列为每种化学品创建了一个*的指纹图谱。采用主成分分析法对指纹图谱进行了进一步分析。
keywords:insect infestation、polythiophene sensors、carbon polymer composite sensors、polyaniline、sensor array
关键词：昆虫侵害；聚噻吩传感器；碳聚合物复合传感器；聚苯胺；传感器阵列