Patent ID: 8097999

Claim:
An actuator comprising: a support layer; and a piezoelectric layer comprising a lower semiconductor layer and an upper semiconductor layer formed on the lower semiconductor layer, a portion of the lower and upper semiconductor layers being a supported portion formed on the support layer, and another portion of the lower and upper semiconductor layers being a cantilever portion which extends beyond the support layer; and a strain relieving layer in contact with the piezoelectric layer, wherein the strain relieving layer is composed of AlGaInN, InGaN, AlGaN, AlGaP, AlGaAs, InGaN, InGaP, InGaAs, InAlN, InAlP, InAlAs, AlGaInP, AlGaInAs, CdZnS, CdZnO, MgZnS, MgZnO, CdMgZnO, CdMgZnS, CuFBr, CuFCl, CuFI, CuBrCl, CuBrI, CuClI, CuFBrCl, CuFBrI, CuFClI, CuBrClI, AuFBr, AuFCl, AuFI, AuBrCl, AuBrI, AuClI, AuFBrCl, AuFBrI, AuFClI, AuBrClI, AgFBr, AgFCl, AgFI, AgBrCl, AgBrI, AgClI, AgFBrCl, AuFBrI, AgFClI, or AgBrClI.