Flexible Micro-Battery for Powering Smart Contact Lens

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 t...

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Detalles Bibliográficos
Autores principales: Nasreldin, Mohamed, Delattre, Roger, Ramuz, Marc, Lahuec, Cyril, Djenizian, Thierry, de Bougrenet de la Tocnaye, Jean-Louis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539253/
https://www.ncbi.nlm.nih.gov/pubmed/31058810
http://dx.doi.org/10.3390/s19092062
Descripción
Sumario: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 cm(2) 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.

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