Commonly, the event of WGM microresonators for built-in lithium niobate photonics is accompanied by the development in the LNOI preparation strategy. During the early stage, z-Lower LN movies ended up generally selected thanks to the restrictions of lithographic procedures. Keyword phrases: lithium niobate skinny films; crystal lattice; area inversion voltage; https://paxtonjboam.onesmablog.com/lithium-niobate-crystal-an-overview-73158934