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

Ekinci, Gizem, Yalcinkaya, Arda Deniz, Dundar, Gunhan and Torun, Hamdi (2016) Split-Ring Resonator-Based Strain Sensor on Flexible Substrates for Glaucoma Detection. Journal of Physics: Conference Series, 757 (1). 012019. ISSN 1742-6588

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Abstract

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.

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