聚二甲基硅氧烷的折射率和线膨胀气压响应特性  

Refractive Index and Linear Expansion Pressure Response Characteristics of PDMS

作　　者：李浩[1,2] 李俊 赵雨佳[1] 蒋佩蓁 徐明靖 刘佳欣 周爱 Li Hao;Li Jun;Zhao Yujia;Jiang Peizhen;Xü Mingjing;Liu Jiaxin;Zhou Ai(National Engineering Laboratory of Optical Fiber Sensing Technology,Wuhan University of Technology,Wuhan,Hubei 430074,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan,Hubei 430074,China)

机构地区：[1]武汉理工大学光纤传感技术国家工程实验室,湖北武汉430074 [2]武汉理工大学材料科学与工程学院,湖北武汉430074

出　　处：《光学学报》2021年第22期168-173,共6页Acta Optica Sinica

摘　　要：聚二甲基硅氧烷(PDMS)是一种高分子有机硅化物,广泛应用于微流控芯片制备、生物、光学以及复合材料基体等不同的领域。通过结合PDMS与光纤结构构建了光纤干涉仪,利用光学传感技术研究了PDMS折射率和线膨胀的气压响应特性。实验结果表明,PDMS的折射率随气压的变化率为-2.1×10^(-2)RIU/MPa(RIU为折射率单位),线膨胀随气压的变化率为17.3μm/MPa。采用光学测量的形式对PDMS的折射率和线膨胀气压响应进行研究,精确度和可靠性更高。Polydimethylsiloxane(PDMS)is a polymer organic silicon compound,which is widely used in microfluidic chip preparation,biology,optics,and composite material matrix.The optical fiber interferometer is constructed through the combination of PDMS and optical fiber structure,the refractive index and linear expansion pressure response characteristics of PDMS are tested by optical fiber sensing technology.Experimental results show that the rate of change for refractive index of PDMS with the pressure is-2.1×10^(-2) RIU/MPa(RIU is the unit of refractive index),the rate of change for linear expansion of PDMS with the pressure is 17.3μm/MPa.The refractive index and linear expansion pressure response of PDMS are studied in the form of optical measurement,which has higher accuracy and reliability.

关 键 词：光学设计 光纤传感 折射率 线膨胀 聚二甲基硅氧烷 

分 类 号：TN25[电子电信—物理电子学]