Patent ID: 7687108
Filing Date: 2010-03-30
Classification: F03G,F04B,F05C,G11C,H01L

Abstract:
1. A method of making a device including (i) at least one shape memory alloy (SMA) layer and (ii) at least one stressed metal or metal alloy material layer, the device having a cantilever structure, the method comprising: providing a substrate, depositing a sacrificial layer on the substrate; depositing and annealing a SMA film; depositing a stressed metal or metal alloy material film, in which the deposition parameters of the stressed metal or metal alloy material film are controlled to induce stress or produce a stress gradient in the stressed metal or metal alloy material film that acts upon the SMA film; and at least partially removing the sacrificial layer, to thereby release the SMA film and stressed metal or metal alloy material film from the substrate and produce a multiple-time actuation cantilevered layered device configured to be activated multiple times.