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In this work we discusses the scattering of plane thermo&ndash;elastic waves at wavy boundary of a micropolar semi&ndash;space . Method of small perturbations has been used. The analysi s shows that surface wave breaks into three parts. Rayleigh wave with velocity C scattered waves with velocity of propagation CW and W rc &minus; CW W rC + . It is also seen that scattered wavevelocity depends on the wave length and also on the wavy nature of the boundary.We consider a micropolar elastic half space&ndash; &minus;&infin; &infin; &ge; ? ? (x x x hf x 13 2 1 , , ) ( ) bounded by a surface x hf x 2 1 = ( ), &nbsp;where ( ) ( ) 1 1 sin f x r rx &pi; = and h &lt;&lt;1 represent a small perturbation parameter such that and its higher order terms are neglected (i.e the surface is slightly wavy ) and we assume that The wavy boundary has a normal traction of the concentrated type , zero shear and zero couple stress. &nbsp;for Where is the normal stress component for the wavy boundary in the direction of normal to the curve , is the shear stress component for the wavy boundary along the curve , is the couple stress component in the direction of binormal to the curve.The temperature and deformation fields do not depend on the variable .The surface under consideration dissipates according to Newton,s law of cooling