一个新的微型和选择性CMOS气体传感器用于气体混合物分析-第4部分:湿度的影响
Moshe Avraham1, Adir Krayden1, Hanin Ashkar1
1Electrical and Computer Engineering Department, Technion-Israel Institute of Technology, Haifa 3200003, Israel.
Micromachines
|February 24, 2024
概括
这项研究表明,使用热传感器 (TMOS) 的新型气体传感器 (GMOS) 即使在高湿度环境中也可以准确检测气体. 这项研究对于在各种现实条件下可靠的气体探测至关重要.
科学领域:
- 材料科学与工程 材料科学与工程
- 化学传感技术 化学传感技术
- 微电子机械系统 (MEMS) 是一种微电子机械系统.
背景情况:
- 微型燃烧型气体传感器 (GMOS) 使用了一种新型热传感器 (TMOS),一个微加工的CMOS-SOI晶体管与催化板.
- GMOS传感器测量气体燃烧外热反应的温度变化,由点火温度和热板温度控制.
- 传感器将电参数与热参数联系起来,使用朱尔加热和监测TMOS电压变化相对于盲传感器.
研究的目的:
- 为了研究湿度对GMOS和 pellistor气体传感器性能的影响.
- 解决模拟湿度下的传感器性能方面的挑战,包括定义工作温度,测量温度动态和建模传感响应.
- 为了验证GMOS传感器在高湿度条件下的运行能力.
主要方法:
- 使用了结合计算流体动力学 (CFD) 的先进模拟软件,用于复杂的3D分析包装的GMOS.
- 进行实验研究以评估在不同湿度水平下传感器性能.
- 采用一个盲人传感器作为温度和电压测量的参考.
主要成果:
- 模拟和实验数据证实,GMOS传感器在高湿度下保持运行能力.
- 该研究提供了关于模拟气体传感器性能,以湿度为因素的挑战和方法的见解.
- 建立了操作温度,传感响应和湿度水平之间的相关性.
结论:
- 开发的GMOS传感器表现出强大的性能,即使在高湿度环境中也能有效运行.
- 这项研究显著提高了对湿度对燃烧型气体传感器影响的理解.
- 这些发现支持在实际应用中部署GMOS传感器,其中湿度是普遍存在的环境参数.
相关概念视频
01:19Gas Chromatography: Types of Detectors-II
371
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
371
01:13Gas Chromatography: Overview of Detectors
536
Detectors in gas chromatography (GC) help identify and quantify the components of a mixture by translating chemical properties into measurable signals, which are displayed on a chromatogram. Detectors can be categorized into two main types: destructive and non-destructive.
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
536
01:21Gas Chromatography: Types of Detectors-I
426
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
426
01:14Gas Chromatography–Mass Spectrometry (GC–MS)
4.2K
Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall....
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall....
4.2K