transformation optics

Transformation optics is a field that uses specially engineered materials called metamaterials to control the path of light in unprecedented ways. Unlike natural materials, whose properties are determined by their chemical composition, metamaterials derive their unique electromagnetic characteristics from their internal physical structure.1

By precisely designing these structures, which are much smaller than the wavelength of light they interact with, scientists can achieve properties not found in nature. This includes negative refractive index, which causes light to bend in the opposite direction compared to normal materials. This ability to manipulate light's behavior has led to groundbreaking applications such as invisibility cloaks and superlenses that can overcome the limitations of conventional optics.1