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Article

Flexible Micro-Battery for Powering Smart Contact Lens

1
Mines Saint-Etienne, Center of Microelectronics in Provence, Department of Flexible Electronics, F-13541 Gardanne, France
2
IMT Atlantique, Optics & Electronics Departments, CS 83818, F-29238 Brest CEDEX 3, France
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(9), 2062; https://doi.org/10.3390/s19092062
Received: 18 March 2019 / Revised: 26 April 2019 / Accepted: 28 April 2019 / Published: 3 May 2019
(This article belongs to the Section Biosensors)
In this paper, we demonstrate the first attempt of encapsulating a flexible micro battery into a contact lens to implement an eye-tracker. The paper discusses how to scale the battery to power various circuits embedded in the contact lens, such as ASIC, photodiodes, etc., as well as how to combine the battery with external harvested energy sources. The fabricated ring battery has a surface area of 0.75 cm2 yielding an areal capacity of 43 µAh·cm−2 at 20C. Based on simulated 0.35-µm CMOS ASIC power consumption, this value is large enough to allow powering the ASIC for 3 minutes. The functioning of the micro battery is demonstrated by powering an orange LED. View Full-Text
Keywords: smart contact lens; flexible micro battery; energy harvesting; ASIC smart contact lens; flexible micro battery; energy harvesting; ASIC
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MDPI and ACS Style

Nasreldin, M.; Delattre, R.; Ramuz, M.; Lahuec, C.; Djenizian, T.; de Bougrenet de la Tocnaye, J.-L. Flexible Micro-Battery for Powering Smart Contact Lens. Sensors 2019, 19, 2062. https://doi.org/10.3390/s19092062

AMA Style

Nasreldin M, Delattre R, Ramuz M, Lahuec C, Djenizian T, de Bougrenet de la Tocnaye J-L. Flexible Micro-Battery for Powering Smart Contact Lens. Sensors. 2019; 19(9):2062. https://doi.org/10.3390/s19092062

Chicago/Turabian Style

Nasreldin, Mohamed, Roger Delattre, Marc Ramuz, Cyril Lahuec, Thierry Djenizian, and Jean-Louis de Bougrenet de la Tocnaye. 2019. "Flexible Micro-Battery for Powering Smart Contact Lens" Sensors 19, no. 9: 2062. https://doi.org/10.3390/s19092062

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