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Credits: Courtesy of the researchers Caption: This magnified image of the metalens shows its microscopic features. Credits: Courtesy of the researchers Caption: This image shows an optical-microscope view of the metalens. Credits: Courtesy of the researchers Previous image Next image Polished glass has been at the center of imaging systems for centuries. Their precise curvature enables lenses to focus light and produce sharp images, whether the object in view is a single cell, the page of a book, or a far-off galaxy. Changing focus to see clearly at all these scales typically requires physically moving a lens, by tilting, sliding, or otherwise shifting the lens, usually with the help of mechanical parts that add to the bulk of microscopes and telescopes.

Yifei zhangVladimir libermanMikhail shalaginovFan yangJeffrey chouPeter suCarlos riosChristopher robertsAnuradha agarwalUniversity of massachusetts at lowellNature communicationsLincoln laboratoryMartin corporationUniversity of central floridaMaterials research laboratoryCentral florida