"Revolutionary Battery: Saline-Powered Contact Lenses Unveiled by Scientists"
Scientists from NTU Singapore have developed a micrometers-thin, flexible battery that can be charged by a saline solution or human tears. The battery, made of biocompatible materials, does not contain wires or toxic heavy metals and has a glucose-based coating that reacts with sodium and chloride ions in the solution. This breakthrough could potentially power smart contact lenses, enabling features such as augmented reality and health monitoring.