The development of micro-acoustic wave sensor in biosensing created the nee
d for further investigations of the surface wave propagation in a viscous l
iquid loaded layered medium. In this paper, we employed the sextic formalis
m of surface waves to study the viscous effect on the dispersion and attenu
ation characteristics of surface waves in a viscous liquid loaded layered m
edium. The dispersion relation for the viscous liquid loaded single-layered
anisotropic half-space is given. Numerical examples of the Rayleigh wave a
nd Love wave dispersion for the cases of a Cu/Fe layered half-space (isotro
pic) and of a SiO2/Si layered half-space (anisotropic) loaded with viscous
liquid are calculated and discussed.