Simultaneous Measurement of Pressure and Temperature Based on Graphene

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Dong, Nannan^1 ; Yang, Bo^1

Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing

100081, China^1

关键词: Biomedical science;    End faces;    Ocean exploration;    Pressure and temperature;    Pressure and temperature sensors;    Simultaneous measurement;    Wavelength resolution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/5/052011/pdf
DOI  :  10.1088/1757-899X/382/5/052011

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper presents an ultrahigh sensitive pressure and temperature sensor based on a Fabry-Perot interferometer (FPI) using a graphene diaphragm. The cavity of the FPI is the gap between the end-face of fiber Bragg gratings (FBG) and the graphene diaphragm. To prevent the serious cross-impact of pressure and temperature, a FBG is used to replace the single mode fiber. The sensitivities of pressure are 17.4698nm/kPa and 0.0267pm/kPa for FPI and FBG, respectively. The sensitivities of temperature are 5.075nm/°C and 10.9pm/°C, for FPI and FBG, respectively. The resolutions for pressure and temperature measurement are ±0.0267kPa and ±0.459°C with the wavelength resolution of 5pm. The experimental results show that the sensor is able to measure pressure and temperature simultaneously and accurately by a matrix on sensitivity. The proposed sensor can be applied on wide applications such as ocean exploration, biomedical science, and microfluidic, etc.