A new type of surface acoustic waves induced by nonlinearity
نویسنده
چکیده
It is demonstrated that nonlinear properties of a thin film coating a lrnear elastic substrate may lead to the creation of a new type of surface acoustic waves which may exist at the condition c: cc:, where c, and crare the velocities in the substrate and the film, respectively. These waves appear when the amplitude at the surface exceeds a certain threshold value and for a definite sign of the nonlinearity.
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