Toward a wireless contact lens sensor system with a micro-capacitor for intraocular pressure monitoring on in-vitro porcine eye

Guan Ting Yeh, Tsung Wei Wu, Shang Wei Tsai, Shun Hsi Hsu, Jin-Chern Chiou

研究成果: Conference contribution同行評審

5 引文 斯高帕斯(Scopus)

摘要

This work presents a type of capacitive sensor for intraocular pressure (IOP) measurement on soft contact lens with Radio Frequency Identification (RFID) module. The flexible capacitive IOP sensor and Rx antenna was designed and fabricated using MEMS fabrication technologies that can be embedded on a soft contact lens. The IOP sensing unit is a sandwich structure composed of parylene C as the substrate and the insulating layer, gold as the top and bottom electrodes of the capacitor, and Hydroxyethylmethacrylate (HEMA) as dielectric material between top plate and bottom plate. The main sensing principle is using wireless IOP contact lenses sensor (CLS) system placed on corneal to detect the corneal deformation caused due to the variations of IOP. The variations of intraocular pressure will be transformed into capacitance change and this change will be transmitted to RFID system and recorded as continuous IOP monitoring. The measurement on in-vitro porcine eyes show the pressure reproducibility and a sensitivity of 0.02 pF/4.5 mmHg.

原文English
主出版物標題2015 IEEE SENSORS - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781479982028
DOIs
出版狀態Published - 31 12月 2015
事件14th IEEE SENSORS - Busan, Korea, Republic of
持續時間: 1 11月 20154 11月 2015

出版系列

名字2015 IEEE SENSORS - Proceedings

Conference

Conference14th IEEE SENSORS
國家/地區Korea, Republic of
城市Busan
期間1/11/154/11/15

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