Split-Ring Resonator-Based Strain Sensor on Flexible Substrates for Glaucoma Detection

[摘要] This paper presents split-ring resonator-based strain sensors designed and characterized for glaucoma detection application. The geometry of the sensor is optimized such that it can be embedded in a contact lens. Silver conductive paint is to form the sensors realized on flexible substrates made of cellulose acetate and latex rubber. The devices are excited and interrogated using a pair of monopole antennas and the characteristics of devices with different curvature profiles are obtained. The sensitivity of the device, i.e. the change in resonant frequency for a unit change in radius of curvature, on acetate film is calculated as -4.73 MHz/mm and the sensitivity of the device on latex is 33.2 MHz/mm. The results indicate that the demonstrated device is suitable for glaucoma diagnosis.

[发布机构] Department of Electrical and Electronics Engineering, Bogazici University, Bebek, Istanbul; 34342, Turkey^1;Center for Life Sciences and Technologies, Bogazici University, Kandilli, Istanbul; 34684, Turkey^2

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Cellulose acetates;Conductive paints;Curvature profiles;Flexible substrate;Glaucoma detection;Radius of curvature;Split ring resonator;Strain sensors