1. In the Swiss experiment, the crystal consisted of potassium niobate . 2. MgO-doped lithium niobate is fabricated by periodically-poled method. 3. Nanowires of potassium niobate have been used to produce tunable coherent light. 4. For a doubly doped lithium niobate ( annealing conditions for the crystal samples. 5. The for potassium niobate is 3000 mg / kg ( oral, rat ). 6. The high non-linearity of lithium niobate also makes it useful in resonant crystals. 7. The birefringence in some crystals, in particular lithium niobate is highly temperature-dependent. 8. Molten LiCl is used for the preparation of carbon nanotubes, graphene and lithium niobate . 9. By using two dopants, more trap centers would be created in the lithium niobate crystal. 10. Periodically-poled MgO-doped lithium niobate ( PPMgOLN ) therefore expands the application to medium power level.