Researchers from the U.S. Naval Research Laboratory and Kansas State University have discovered slab waveguides based on the two-dimensional material hexagonal boron nitride. "We knew using hexagonal boron nitride would lead to outstanding optical properties in our samples; none of us expected that it would also act as a waveguide," said Samuel Lagasse, one of the scientists involved in the study. The slabs of hexagonal boron nitride were carefully tuned in thickness so that the emitted light would be trapped within the hexagonal boron nitride and waveguided.
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