Crystal lattice parameters along the (111) at pH: 2, (300) at pH: 3, (300) at pH: 4, (001) at pH: 5 and (001) at pH: 6 plane were calculated by using the formulas given below ... are shown in Fig. 7.

Here, we study a new route to nonlinear metasurface-based optics by coating linear refractive elements with conformable nonlinear metasurface-skin, resulting in hybrid nonlinear refractive elements.