What is Flat lens?
A '''flat lens''' is a new [[technology]] . They are based on [[electromagnetic]] [[metasurface]]s. They are ultrathin surfaces which can be coated to act like a lens.<ref>Yu, Nanfang & Capasso, Federico 2014. Flat optics with designer metasurfaces. ''Nat. Mater''. '''13''': 139–150. [http://www.nature.com/nmat/journal/v13/n2/full/nmat3839.html]</ref> The idea has been widely reported as a major advance in imaging.<ref>Pease, Roland 2016. Flat lens promises possible revolution in optics. ''BBC News'' Science & Environment. [https://www.bbc.co.uk/news/science-environment-36438686]</ref> == References == {{reflist}} {{-}} {{science-stub}} [[Category:Physics]] [[Category:Manufacturing]] [[Category:Materials science]]