Electronic Contact Lens: A Platform for Wireless Health Monitoring Applications

被引：53

作者：

Yuan, Mengyao ^{[1
]}

Das, Rupam ^{[1
]}

Ghannam, Rami ^{[1
]}

Wang, Yinhao ^{[1
]}

Reboud, Julien ^{[1
]}

Fromme, Roland ^{[2
]}

Moradi, Farshad ^{[3
]}

Heidari, Hadi ^{[1
]}

机构：

[1] Univ Glasgow, James Watt Sch Engn, Glasgow G12 8QQ, Lanark, Scotland

[2] Wohlk Contactlinsen GmbH, Chem Engn, D-24232 Schonkirchen, Germany

[3] Aarhus Univ, Dept Engn, DK-8200 Aarhus, Denmark

来源：

ADVANCED INTELLIGENT SYSTEMS | 2020年 / 2卷 / 04期

基金：

英国工程与自然科学研究理事会;

关键词：

electronic contact lenses; remote health monitoring; wearable electronics; DIAGNOSTICS;

D O I：

10.1002/aisy.201900190

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Electronic contact lenses are used for noninvasively monitoring vital human signs and medical parameters. However, maintaining a secure communications connection and a self-sustainable power source are still looming challenges. Herein, a proof-of-concept electronic contact lens is demonstrated that includes a spiral antenna with its wireless circuit unit for data telemetry, a rectifier circuit for power conditioning, and a micro-light-emitting diode (mu LED) as a load. The spiral antenna with its rectifying circuit is designed considering operation in the industrial, scientific, and medical (ISM) band of 2.4GHz. The spiral coil with an inner diameter of 10mm, an outer diameter of 12mm, and a wire width of 0.2mm is fabricated on a donut-shaped flexible polyimide substrate. For biocompatibility purposes, polyimide is used as the contact lens substrate and polydimethylsiloxane (PDMS) is used for encapsulation. A 3D-printed eye model is developed for accurately shaping the curvature of the PDMS-encapsulated contact lens. The reflection coefficient (S-11) of the fabricated antenna is tested in different conditions and on an eye model to mimic the liquid condition of the human eye. In a wide range of conditions, a minimum of -20dB reflection coefficient (S-11) is obtained.

引用

页数：8

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