EXP-SA: A Lateral Field Excited Acoustic Wave Sensor for Peroxide-Based Explosives

0730753Vetelino该提案涉及过氧化物基爆炸物现场部署探测器的开发。该探测器由AT切割石英压电传感元件和相关的传感器电子元件组成，该元件表面涂有选择性吸附聚合物薄膜。智力优势：候选薄膜将在LFE传感平台的石英表面上功能化，并在模拟条件下暴露于过氧化物基简易爆炸装置和用于制造它们的材料。将测量关键传感器元件特性，如响应水平、响应时间、检测限、分辨率和线性度，并通过将传感器暴露于已知浓度的化学模拟物来确定选择性。此外，将测量每个传感器元件的导纳以隔离膜中的机械和电性质变化，从而识别每个分析物的独特化学特征并提供更高程度的选择性。将设计和制造传感器电子设备，从而形成手持电子设备。传感器电子设备将同时处理来自五个LFE传感元件的输出，并提供数字读数。最后，原型传感器单元将被组装和测试，用于探测PBE和通常用于制造它们的材料。更广泛的影响：PBE探测器的开发将证明缅因州大学的尖端研究将有利于国土安全和军事。 PBE现场部署探测器的成功演示将推动小型传感器企业开发和商业化国土安全，军事，健康，农业，汽车和环境应用的类似传感器。

0730753VetelinoThe proposal deals with the development of field deployable detector for peroxide-based explosives. The detector consists of AT-cut quartz piezoelectric sensing element(s) coated with selectively sorbent polymer film(s) and associated sensor electronics.Intellectual Merit:The candidate films will be functionalized on the quartz surface of the LFE sensing platform and exposed to peroxide-based IEDs and the materials used to fabricate them under simulated conditions. Critical sensor element properties such as the response level, response time, detection limit, resolution, and linearity will be measured and the selectivity will be determined by exposing the sensor to known concentrations of chemical simulants. In addition the admittance of each sensor element will be measured to isolate mechanical and electrical property changes in the film so as to identify the unique chemical signature of each analyte and provide a higher degree of selectivity. Sensor electronics will be designed and fabricated resulting in a handheld electronic unit. The sensor electronics will simultaneously process the output from five LFE sensing elements and provide a digital readout. Finally, the prototype sensor unit will be assembled and tested for the detection of PBEs and the materials commonly used to fabricate them.Broader Impacts:The development of a detector for PBEs will demonstrate that cutting edge research at the University of Maine will benefit homeland security, the military. A successful demonstration of a field deployable detector for PBEs will motivate the development and commercialization, by small sensor businesses, of similar sensors for homeland security, military, health, agricultural, automotive, and environmental applications.