Metasurfaces

 


Super thin, flat sheets are being used to manipulate light, instead of bulky lenses or mirrors. Metasurfaces are a nanostructure technology that can bend and twist light in ways never observed before. 

Metasurfaces are synthetic engineered surfaces. They are made of meticulously designed nanostructures. They are smaller than the wavelength of light. When the geometry and arrangement of these particles is controlled, scientists create metasurfaces. These can control the amplitude, polarization and phase of lightwaves. 

This unparalleled control over the properties of light unlocks huge opportunities for varied applications in optics. 

The research was first published in a journal called Light: Advanced Manufacturing.

Researchers from China are working on nanomanufacturing techniques, including maskless and masked lithography. The team is looking to explore limitations of current fabrication methods. 

The potential of metasurfaces include a wide range of fields, including 3D imaging, beam steering and even optical cloaking.

While metasurfaces have enormous potential, they also have huge issues with fabrication and integration. It is yet not possible to create metasurfaces that are both low cost and highly precise, especially on the large scale. 

Researchers around the world are working on these challenges. The future of metasurfaces is a world where light is harnessed and manipulated with complete control. It will bring big advancement in optics, sensing, imaging and more! 


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