Surface plasmon and phonon polaritons are useful for sub-diffraction limit waveguiding of light, but phonon polaritons are advantageous in the mid-infrared. Xu et al.show that one-dimensional boron nitride nanotubes can support propagating phonon polaritons, making them a suitable platform for further study.
- Xiaoji G. Xu
- Behnood G. Ghamsari
- Gilbert C. Walker
