作为下一代可靠的分析仪器,一流的个人气体传感器
Radislav A Potyrailo1, Brian Scherer1, Baokai Cheng1
1General Electric Research, Niskayuna, NY, USA.
Applied spectroscopy
|August 21, 2023
概括
新的多变量气体传感器提供了对漂移的自我校正,克服了传统单输出传感器的局限性. 这一进步使新兴监控应用程序的可靠现场性能能够在不需要频繁维护的情况下实现.
科学领域:
- 传感器技术 传感器技术
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 现有的气体传感器 (零级) 在现场条件下由于化学干扰和传感器漂移而遭受性能降低.
- 单输出传感器无法区分分析器响应与背景噪声或漂移,从而限制了它们的准确性.
- 目前的传感器设计需要经常维护,这阻碍了实际的现场应用.
研究的目的:
- 开发先进的气体传感器,克服传统的零顺序传感器的局限性.
- 在新一代第一阶段气体传感器中证明对传感器漂移的自我校正能力.
- 探索新的设计原则,以实现可靠和低维护的气体传感.
主要方法:
- 开发两种类型的第一阶级气体传感器,在不同的电磁频谱区域运行.
- 无线电频率 (RF) 传感器利用金属氧化物在多个频率上的介电刺激进行基线漂移校正.
- 使用纳米结构材料的光子传感器,灵感来自Morpho蝶,使用多个波长进行漂移校正.
主要成果:
- 在RF和光子第一阶级气体传感器中成功地证明了对基线漂移的自我纠正.
- 一级传感器表现出独立的响应,使得在干扰和漂移的情况下能够准确检测分析物.
- 开发的传感器显示出在各种环境监测场景中可靠,低维护运行的潜力.
结论:
- 一级分析仪器,如展示的多变量气体传感器,提供了从零级传感器的范式转变.
- 应用于射频和光子传感器的自我校正原则有效地减轻漂移,提高场的可靠性.
- 这些进步为在具有挑战性的环境中进行自主和长期气体监测铺平了道路.
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