A SAW is generated on the surface of a piezoelectric YZ-lithium niobate by means of an AC voltage applied to an IDT at a synchronous frequency of 1 GHz. (i) Given that the velocity of propagation of...

A SAW is generated on the surface of a piezoelectric YZ-lithium niobate by means of an AC voltage applied to an IDT at a synchronous frequency of 1 GHz. (i) Given that the velocity of propagation of the SAW in the material is aR = 3488 m/s, determine the acoustic wavelength. (ii) Compare this wavelength with that of an electromagnetic wave propagation in free space at the same frequency. (iii) Hence or otherwise obtain the ratio of the SAW wavelength to that of the EM wave