A team of researchers from Harvard’s John A. Paulson School of Engineering and Applied Sciences (SEAS) have created a dual metalens that can switch between two different modes of operation. This breakthrough could enable a wide variety of applications in fields such as augmented reality, optical communications, and imaging. The metalens is a thin, flat surface with nanostructures that can focus light like a traditional lens. With the dual metalens, light waves can be manipulated in two different ways, allowing for greater flexibility and control over the optical properties. This could lead to advances in areas such as imaging, where the dual metalens could be used to create more detailed images or to reduce image blur. The possibilities are exciting and could revolutionize the way we use optics in many areas.

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source: Phys.org