We construct a theory of the deflection of a bimorph cantilever, applicable to both the isotropic and anisotropic cases, and also including noise effects. The proposed formulation gives the correct expressions for the longitudinal and transverse deflections of a magnetoelastic cantilever for an arbitrary ratio of the thickness of the two components. The optimization of the cantilever as a sensor as a function of the thickness of the two components is discussed and also some results of the cantilever as an actuator are reported.

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