"World's Thinnest Lens Developed Using Excitons"

Scientists from the University of Amsterdam and Stanford University have developed the thinnest lens on Earth, just three atoms thick, using a material called tungsten disulfide (WS2). This flat lens, which relies on quantum effects and excitons for its efficiency, could revolutionize augmented reality glasses by allowing most light to pass through while focusing a small portion for information collection. The research, published in Nano Letters, highlights the potential for future applications in wearable technology and advanced optical coatings.