Abstract： According to surface transient excitation theory of elastic wave for piezoelectric crystal, in the surface of a piezoelectric crystal can exist acoustical high velocity head wave except the general surface acoustic wave (SAW). Such a mode is to propagate with the group velocity of the longitudinal bulk wave along the crystal surface. For ST quartz its value is 5.744xl03m/s, which agrees with our experiments. The fact that the longitudinal head wave mode has a high propagation velocity offers potential applications for high frequency SAW devices.
(Velocity and attenuation of elastic and poroelastic waves)
引用本文:
WANG Cheng-hao;LIU Yuan;HE Shi-tang;HUANG Xin. High Velocity Acoustical Head Wave on Surface of ST Quartz[J]. 中国物理快报, 1999, 16(10): 740-741.
WANG Cheng-hao, LIU Yuan, HE Shi-tang, HUANG Xin. High Velocity Acoustical Head Wave on Surface of ST Quartz. Chin. Phys. Lett., 1999, 16(10): 740-741.
1999, Vol. 16 
