Patent ID: 8163586

Claim:
A method for producing a device with at least one suspended membrane, comprising at least the following steps: producing a trench through a first sacrificial layer and a second layer deposited on the first sacrificial layer, the trench completely surrounding at least a portion of the first sacrificial layer and at least a portion of the second layer, filling all or a portion of the trench with at least one material capable of resisting at least one etching agent, etching said portion of the first sacrificial layer with said etching agent through at least one opening made in the second layer, said portion of the second layer forming at least one portion of the suspended membrane, and between the step of filling the trench and the step of etching said portion of the first sacrificial layer, a step of non-selective epitaxy on the second layer and on the material deposited in the trench or a step of transferring a material onto the second layer and onto the material arranged inside the trench, wherein the transferred material or epitaxial material is at least partially monocrystalline.