Even though the fabrication procedures of the LNPhC have improved conspicuously over the years, the technique that etches the superior-good quality holes with the price on the cheap remains absent. Owing to the steady Actual physical and chemical features, traditional methods create conical holes with sidewall angles of 55°–eighty five°. https://lithium-niobate-crystal85172.look4blog.com/70975325/the-basic-principles-of-lithium-niobate-crystal