For years, scientists have been pushing the boundaries of what is possible with optics. Now, researchers have taken a huge leap forward with the development of free-space nanoprinting that can push far beyond the traditional optical limits. This revolutionary technique can be used to create 3D and 4D structures with nanoscale precision. This is a major breakthrough that could open up a host of new possibilities for the development of photonic devices.

The free-space nanoprinting technique works by using a focused laser beam to create tiny structures in free-space. The laser beam is then scanned across a surface to precisely control the shape and position of the structure. This allows the researchers to create optical features that are orders of magnitude smaller than what was previously possible. The 3D structures created with this technique have been shown to have a resolution of 100 nanometers, and the 4D structures can reach even higher levels of precision.

This new technology could have a huge impact on the world of optics. It could revolutionize the way optical systems are designed, allowing for the creation of complex 3D and 4D structures. The possibilities are endless, and this breakthrough could lead to the development of new photonic devices with unprecedented capabilities.

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source: Phys.org