Researchers at the Nanyang Technological University (NTU) in Singapore have developed an innovative micrometer-thin battery that can power smart contact lenses and be charged with tears, according to a university press release.

Contact lenses have traditionally been used for vision correction, but with advancements in technology, companies are now working on creating smarter versions that can connect to devices like smartphones and display information directly to the wearer’s eyes. However, these applications require the lenses to have an internal battery.

In the past, Interesting Engineering has reported on how companies have incorporated augmented reality displays into smart contact lenses. These devices typically use thin batteries with induction coils and metal wires, which can pose risks to the user’s eyes.

To address this issue, a research team led by Assistant Professor Lee Seok Woo from NTU’s School of Electrical and Electronic Engineering (EEE) has developed a battery that eliminates the use of metals. This breakthrough battery can be powered by tears, making it a safe and convenient option for smart contact lenses.

The team’s innovative approach opens up new possibilities for the future of wearable technology, particularly in the field of vision correction. With this micrometer-thin battery, smart contact lenses could become even more advanced and user-friendly.

The development of this lens battery is a significant step forward in the world of wearable technology. It not only improves the safety and comfort of smart contact lenses but also showcases the potential for sustainable power sources in other wearable devices.

The NTU research team’s findings have been published in a scientific journal, and they are continuing to explore ways to enhance the performance and durability of the lens battery. This breakthrough brings us closer to a future where wearable devices seamlessly integrate into our daily lives, making them more accessible and efficient than ever before.

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