Overview of the MEMS Pirani Sensors

被引：9

作者：

Xu, Shaohang ^{[1
,2
]}

Zhou, Na ^{[1
,2
]}

Shi, Meng ^{[1
]}

Zhang, Chenchen ^{[1
]}

Chen, Dapeng ^{[1
,2
,3
]}

Mao, Haiyang ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Inst Microelect, Beijing 100029, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Jiangsu Hinova Technol Co Ltd, Wuxi 214135, Jiangsu, Peoples R China

来源：

MICROMACHINES | 2022年 / 13卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Pirani sensors; MEMS; vacuum; thermal conductivity; functional materials; THERMAL VACUUM SENSOR; PRESSURE SENSOR; TUNGSTEN-MICROHOTPLATE; CARBON NANOTUBES; OPERATING RANGE; GAUGE; TEMPERATURE; PERFORMANCE; TECHNOLOGY; MILITARY;

D O I：

10.3390/mi13060945

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Vacuum equipment has a wide range of applications, and vacuum monitoring in such equipment is necessary in order to meet practical applications. Pirani sensors work by using the effect of air density on the heat conduction of the gas to cause temperature changes in sensitive structures, thus detecting the pressure in the surrounding environment and thus vacuum monitoring. In past decades, MEMS Pirani sensors have received considerable attention and practical applications because of their advances in simple structures, long service life, wide measurement range and high sensitivity. This review systematically summarizes and compares different types of MEMS Pirani sensors. The configuration, material, mechanism, and performance of different types of MEMS Pirani sensors are discussed, including the ones based on thermistors, thermocouples, diodes and surface acoustic wave. Further, the development status of novel Pirani sensors based on functional materials such as nanoporous materials, carbon nanotubes and graphene are investigated, and the possible future development directions for MEMS Pirani sensors are discussed. This review is with the purpose to focus on a generalized knowledge of MEMS Pirani sensors, thus inspiring the investigations on their practical applications.

引用

页数：21

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