Patent ID: 7288873

Claim:
A device that emits pulses, the device comprising: a drive electrode; a cantilever, wherein the cantilever comprises: a piezoelectric layer; a first electrical conductor positioned on a first side of the piezoelectric layer; and a second electrical conductor positioned on a second side of the piezoelectric layer which is opposite the first side of the piezoelectric layer, wherein the cantilever oscillates between two mechanically-stressed states when a predetermined alternating voltage is applied between the drive electrode and the first electrical conductor, wherein the cantilever is in a mechanically-unstressed state when between the two mechanically-stressed states, and wherein the piezoelectric layer emits a plurality of pulses during the oscillation of the cantilever between the two mechanically-stressed states; and a third electrical conductor positioned in the vicinity of the cantilever, wherein the emitted pulses generate an electrical field that is impinged onto the third electrical conductor when the cantilever passes the third conductor during the oscillation of the cantilever between the two mechanically-stressed states, and wherein the impinged electrical field generates an induced current in the third conductor.