Single-Crystalline V2O5 Ultralong Nanoribbon Waveguides

High-aspect-ratio V2O5 nanoribbons are synthesized by thermal vapor deposition. Our results reveal that the nanoribbons can serve as effective active optical waveguides. In addition, the observation of strong Raman signals collected at the end of the ribbon indicate that the unique nanostructure could play a vital role in Raman amplifers and other nonlinear photonic components.