基于石墨烯表面等离子体的温度传感器设计

Design of temperature sensor based on graphene surface plasmon

基于石墨烯的电学特性和周期性光栅结构,设计一种表面等离子体温度传感器.对温度传感器在不同光栅厚度、光栅宽度和光栅间隔时的反射率及共振波长进行仿真计算,优化传感器结构尺寸.在此基础上分析乙醇、蒸馏水、甘油等不同传感介质的温度传感器在不同温度下的反射率和共振波长,比较其温度灵敏度.试验结果显示,以甘油作为传感介质时,温度传感器的灵敏度可达0.665 nm·℃^(-1).

A surface plasmon temperature sensor is designed based on the electrical properties and periodic grating structure of graphene.The reflectivity and resonance wavelength of the temperature sensor under different grating thickness,grating width and grating interval are simulated and calculated,and the sensor structure size is optimized.On this basis,the reflectivity and resonance wavelength of temperature sensors of different sensing media such as ethanol,distilled water,and glycerol at different temperatures are analyzed The temperature sensitivities are compared,and the sensitivity can reach 0.665nm·℃^(-1) when glycerol is used as the sensing medium.