US Patent 7863156 Method of producing a strained layer

A method of producing a strained layer on a substrate includes assembling a layer with a first structure or first means of straining including at least one substrate or one layer capable of being deformed within a plane thereof under the influence of an electric or magnetic field or a photon flux. The layer is strained by modifying the electric or magnetic field or the photon flux. The strained layer is assembled with a transfer substrate and all or part of the first straining structure is removed.