The present invention relates to an electro-mechanical wave device used for movement of a mechanical member by friction, a motor comprising one or more wave devices and a method for the design and manufacture of the electro-mechanical wave device . According to the invention, an electro-mechanical wave device is provided (1) , comprising a substrate (2) for propagation of a mechanical wave and for transmission of electrical signals through conductors (4, 6, 8) accommodated by the substrate, a plurality of actuators (10a, 10b, 10c, 1Od) positioned on the substrate for generation of the mechanical wave, each of the actuators being connected to a respective set of conductors of the substrate for reception of an excitation signal transmitted by the set of conductors, whereby the actuators generate the mechanical wave propagating in the substrate along a predetermined propagation path in response to the excitation signals.