Scientists have recently discovered a new way to create a negative refraction of light at the nanoscale using polaritons. This new technique, developed by scientists at the University of Birmingham, could lead to a range of new applications in nanophotonics and spintronics.

Using a combination of electric and magnetic fields, the researchers were able to control the flow of light at the nanoscale by creating a gate-tunable negative refraction of polaritons. The researchers believe this new technique could enable a range of new possibilities, such as controlling light in nanoscale structures and creating new spintronic devices. This is an exciting development with potential applications in the field of nanophotonics.

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source: Phys.org