EXP-LA: Real-time, Compact, and Ultra-sensitive Sensor Arrays for Explosives Vapor Detection

EXP-LA：用于爆炸物蒸气检测的实时、紧凑和超灵敏传感器阵列

• 批准号: 0730826
• 负责人: Yu Lei
• 金额: $ 79.24万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0730826&HistoricalAwards=false
• 关键词: EXP; LA; Real; time; Compact

The aim of this proposal is to advance the development of real-time and ultra-sensitive sensor arrays for rapid explosives detection. As anticipated if successful, this work could have enormous impact on the ability to 'sniff out' ultra-trace quantities of explosives. An ultra-thin molecular sieving zeolite membrane will filter an air sample, thus serve as an explosives vapor concentrator. Single-walled carbon nanotube (SWNT)-porphyrin conjugates spanning two electrodes will serve as sensing elements. Porphyrinoids of wide structural variety, and those selected based on the largest diversity with respect to their interaction with nitroaromatics, are used for the SWNT-modification. The dark and light conductivity of the modified SWNTs will be the data input for trainable pattern recognition software. All these features promise to impart onto the electronic nose an unprecedented speed, sensitivity and selectivity. The technology proposed is readily miniaturized and applicable for remote surveillance devices. The proposed research fosters collaborations across multiple disciplines and Universities, and offers a truly multidisciplinary training ground for students and postdocs. Also, the applied nature of the research activity lends itself for dissemination in technical as well as non-technical journal media and will be the subject of REU and outreach activities.

这项建议的目的是推动开发用于快速探测爆炸物的实时和超灵敏传感器阵列。 正如预期的那样，如果成功，这项工作可能会对“嗅出”超痕量爆炸物的能力产生巨大影响。 超薄分子筛膜将过滤空气样品，从而作为爆炸物蒸气浓缩器。单壁碳纳米管（SWNT）卟啉共轭物跨越两个电极将作为传感元件。广泛的结构多样性的卟啉类化合物，和那些选择的基础上最大的多样性，就其与硝基芳烃的相互作用，被用于SWNT修饰。 改性单壁碳纳米管的暗和光传导性将是可训练模式识别软件的数据输入。 所有这些特性都保证了电子鼻具有前所未有的速度、灵敏度和选择性。所提出的技术易于小型化，适用于远程监控设备。拟议的研究促进了跨学科和大学的合作，并为学生和博士后提供了一个真正的多学科培训基地。 此外，研究活动的应用性质适合于在技术和非技术期刊媒体上传播，并将成为可再生能源股和外联活动的主题。