標題: Toward A Wireless Contact Lens Sensor System with a Micro-Capacitor for Intraocular Pressure Monitoring on in-vitro Porcine Eye
作者: Yeh, Guan-Ting
Wu, Tsung-Wei
Tsai, Shang-Wei
Hsu, Shun-Hsi
Chiou, Jin-Chern
電機學院
電控工程研究所
College of Electrical and Computer Engineering
Institute of Electrical and Control Engineering
關鍵字: Contact lens system;Intraocular pressure;Capacitor sensor;Non-invasive Biomedical Monitoring System
公開日期: 2015
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
URI: http://hdl.handle.net/11536/135965
ISBN: 978-1-4799-8203-5
ISSN: 1930-0395
期刊: 2015 IEEE SENSORS
起始頁: 291
結束頁: 294
顯示於類別:會議論文