In a recent breakthrough, scientists have developed a method of creating ultra-thin metasurfaces with a diameter of just a few centimeters. This new method could revolutionize the use of metasurfaces in various applications, such as optical communications, imaging, sensing, and more. Metasurfaces are two-dimensional structures with unique optical properties and are created by carefully designing the shape and position of each individual nanostructure. The new method involves lithographically patterning a thin film of silver onto a glass substrate and then using a laser beam to shape the nanostructure. This technique is not only much faster than existing methods, but it also produces metasurfaces with excellent optical properties. This breakthrough could open the door to numerous applications in the field of optics and photonics.

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source: Phys.org