Olfactory Sensors and MEMS Based Ultrasonic Transducers

基于 MEMS 的嗅觉传感器和超声波换能器

• 批准号: RGPIN-2018-05002
• 负责人: Buchanan, Douglas
• 金额: $ 2.04万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=646460
• 关键词: Olfactory; Sensors; MEMS; Based; Ultrasonic

With the interest in the “internet of things” & specifically with new instrument networks, research of new sensor technologies is required for many in a number of industrial sectors, including in the automotive industry (acceleration, proximity, imaging), oil, gas & transportation of hazardous material (leak detection), cosmetics & security (odor detection & discrimination at ppm levels), & medicine (sample testing, imaging), to name a few. My research will develop new sensors that combine silicon based technologies & polymer thin films for olfactory sensor arrays & micro-electro-mechanical systems (MEMS) based ultrasonic devices for medical imaging & atmospheric testing.**** One theme of my program is work on integrating of silicon-based devices with specifically design polymer films for sensing volatile organic compounds. Using silicon technology, with all of the required digital & analog circuitry, in a hybrid fashion, each individual sensor is “functionalised” using an application specific polymer films. Using different polymer materials, deposition processes & different dopants, these polymers will be designed to be sensitive to a wide range of olfactory molecules. By using large numbers of sensors statistical & learning (AI) algorithms will be used to fully mimic mammalian olfaction. Such electronic sensor array systems can be used to sense & discriminate between many different chemical compounds for many different applications that could include in the mass production of cosmetics, food & beverages, in the detection of different fuel types in either the shipping &/or aviation industries & even in the recognition of explosives in the areas of bio-terrorism & security.* *** A 2nd theme of this program includes the design of new ultrasonic transducers. A patent-pending transducer was developed by my group for imaging defects in hydro-electric cables and medical imaging. This work is now being expanded to include sensor development for atmospheric testing. MEMS transducers will be designed with different beam shapes, frequencies & power requirements. Some of our past designs are being tested in an microwave/ultrasonic imaging system in collaboration with other researchers at the University of Manitoba and Calgary.. Initial results from our patented multi-membrane transducer are promising, but much work is required.* *** MEMS transducers are also being developed for atmospheric testing in collaboration with researchers at Cornell & Tufts Universities and NASA. These anemometers, for wind speed & direction, need to work in the Martian atmosphere which is much different than Earth's and is mostly CO2 with a pressure 100 times less than Earth's. Our patent-pending sensor, will undergo a re-design to enable its application in future Mars anemometers.******

随着对“物联网”的兴趣&特别是对新仪器网络的兴趣，许多工业部门（包括汽车行业）都需要研究新的传感器技术（加速、接近、成像）、石油、天然气和危险材料运输（泄漏检测）、化妆品和安全（ppm级别的气味检测和辨别）、以及医药（样品测试、成像）等等。我的研究将开发新的传感器，结合联合收割机硅基技术和聚合物薄膜的嗅觉传感器阵列和微机电系统（MEMS）为基础的超声设备的医疗成像和大气测试。* 我的项目的一个主题是将硅基器件与专门设计的用于检测挥发性有机化合物的聚合物薄膜相结合。采用硅技术，所有所需的数字和模拟电路，在一个混合的方式，每个单独的传感器是“功能化”使用特定应用的聚合物薄膜。使用不同的聚合物材料，沉积工艺和不同的掺杂剂，这些聚合物将被设计为对各种嗅觉分子敏感。通过使用大量的传感器，统计和学习（AI）算法将用于完全模仿哺乳动物的嗅觉。这种电子传感器阵列系统可用于感测和区分许多不同应用中的许多不同化合物，包括化妆品，食品和饮料的大规模生产，在航运和/或航空工业中检测不同的燃料类型，甚至在生物恐怖主义和安全领域识别爆炸物。 *** 该计划的第二个主题包括新的超声换能器的设计。我的小组开发了一种正在申请专利的传感器，用于水电电缆和医学成像中的成像缺陷。这项工作现在正在扩大到包括用于大气测试的传感器开发。MEMS传感器将被设计为具有不同的波束形状、频率和功率要求。我们过去的一些设计正在与马尼托巴大学和卡尔加里大学的其他研究人员合作，在微波/超声成像系统中进行测试。我们获得专利的多层膜传感器的初步结果很有希望，但还需要做很多工作。* *** MEMS传感器也正在与康奈尔大学和塔夫茨大学以及NASA的研究人员合作开发用于大气测试。这些风速和风向的风速计需要在火星大气中工作，火星大气与地球大气大不相同，主要是二氧化碳，压力比地球小100倍。我们正在申请专利的传感器将进行重新设计，以便在未来的火星风速计中应用。