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使用碳纳米管的小型气体电离传感器

Ashish Modi¹, Nikhil Koratkar, Eric Lass

¹Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.

|July 11, 2003

概括

新的电离微传感器利用碳纳米管尖端进行气体传感. 这些紧的低压设备提供安全,灵敏和选择性的检测,克服了传统电离传感器的局限性.

科学领域:

材料科学材料科学材料科学
电气工程电气工程
化学传感器化学传感器

背景情况:

传统的电离传感器是重的,耗电的,在高电压下运行,这限制了它们的实际应用.
现有的碳纳米管 (CNT) 传感器系统尚未完全解决传统电离传感器的局限性.

研究的目的:

开发和测试基于碳纳米管尖的新型电离微传感器.
为了实现紧,安全和低功率的气体传感解决方案.

主要方法:

使用碳纳米管尖端气体的电分解制造电离微传感器.
测试各种气体和气体混合物的传感器性能.
在不同的环境条件下 (温度,湿度,气流) 评估传感器响应.

主要成果:

成功演示了通过CNT尖端的电分解运行的电离微传感器.
与传统电极相比,由于CNT尖端的高电场,故障电压显著降低 (几倍).
传感器表现出良好的灵敏度和选择性,以及对环境因素的强度.

结论:

开发的基于CNT的电离微传感器为传统传感器提供了一个紧的,电池驱动的,安全的替代方案.
这些传感器具有实用优势,包括简单性和低成本.
潜在的应用包括环境监测,工业过程传感和反恐气体检测.

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