Patent ID: 7179674

Claim:
A method, comprising: forming a first layer on a surface of a semiconductor wafer; forming a first aperture in the first layer; forming a second layer over the first layer and within the aperture; forming a third layer of semiconductor material over the second layer and in the aperture, to form a first plug in the aperture; forming a fourth layer over the third layer and in contact with the first plug; patterning the fourth layer to form a beam; forming a fifth layer over the fourth layer; forming an aperture in the fifth layer having a shape substantially mirroring the shape of the first plug; filling the aperture in the fifth layer to form a second plug in contact with the beam; removing the fifth layer such that the second plug remains on the beam; forming a sixth layer over the second plug and beam having a thickness substantially equal to a thickness of the second layer; forming a seventh layer over the sixth layer; and etching the second and sixth layers to form a cantilever of the beam with one end suspended above the first aperture, the first plug coupled to the beam and suspended at least partially within the first aperture, the second plug coupled to the beam and at least partially suspended within a second aperture formed in the seventh layer by the second plug and the sixth layer.