Nanowerk  August 24, 2020 In a conventional lens an increase in refraction index increases the field of view in proportion to the flatness of the lens. To image with a single element over a wide field of view an international team of researchers (Brazil, UK, China) used photolithography to design a lens consisting of a single nanometric layer of silicon on arrays of nanoposts that interact with light. The resulting metalens mimics a totally flat lens with an infinite refraction index, which could not be obtained with a conventional lens. It has a field of view, which ideally can reach […]