Manufacturing a flexible structure by transfers of layers

A method for manufacturing a flexible structure, wherein the method comprises the following steps:

• implanting ionic species in a first source substrate so as to form a first embrittlement region delimiting a first thin film comprising a single-crystal material;
• implanting ionic species in a second source substrate so as to form a second embrittlement region delimiting a second thin film comprising a single-crystal material;
• providing a flexible substrate, a stiffness R of which is less than or equal to 107 GPa·μm3;
• securing the first and second thin films respectively to the first face and to the second face of the flexible substrate so as to form a stack including the flexible structure delimited by the first and second embrittlement regions, the flexible structure having a stiffening effect suitable for allowing transfers of the first and second thin films;
• and
• applying a fracture thermal budget for transferring the first and second thin films onto the flexible substrate.