Induction coils and metallic components

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These lenses can perform a variety of advanced functions, from displaying augmented reality (AR) content to monitoring health parameters such as glucose levels in diabetic patients. Companies are exploring this technology to provide users with enhanced vision and health tracking capabilities without the need for external devices. Current Power Solutions Traditionally, powering these smart contact lenses has been a significant challenge. Most current solutions rely on thin batteries with. These components can be harmful if exposed to the human eye and often complicate the design and comfort of the lenses.


For example, inductive charging requires metal zimbabwe business email list coils inside the lens to transmit power, similar to wireless charging pads for smartphones. While this method is effective, it can be bulky and uncomfortable for users. The Innovation: Wiper batteries A significant advance in this area comes from a research team led by Lee Seok Woo at NTU's School of Electrical and Electronic Engineering. They have developed a metal-free battery for smart contact lenses that can be charged by the wearer's tears. This battery is crafted from biocompatible materials and coated with a glucose-based layer. The coating reacts with sodium and chloride ions present in tears, generating electricity through an enzyme.


How It Works The innovative tear-charging battery works through a combination of enzymatic and self-reduction reactions. The glucose coating on the battery reacts with the ions in tears to generate an electrical charge. This method ensures that both electrodes of the battery are charged simultaneously, a significant improvement over previous techniques where only one side was charged. This design not only makes the battery safer and more efficient, but it also leverages natural body fluids to maintain power. This revolutionary approach addresses many of the limitations of traditional power sources for smart contact lenses. The battery is ultra-thin, measuring approximately 0.