What are the Newest Developments in Metalenses?
Image Credit: Victoria Shapiro/Shutterstock.com Polished glass has always been the cornerstone of modern optics and imaging systems. Shaped precisely, it helps us focus light and produce sharp images. However, changing its focus requires physically tilting, sliding, or shifting the lens, often mechanically, which adds bulk to microscopes and telescopes. It is also hard to miniaturize the classical lenses and mirrors currently used. Metalens technology could solve this problem by exploiting light and matter interactions at the nanometer scale to achieve unparalleled control of light's behavio...