(a) Displacement sensing mechanism of adjacent optical fibers in the standard FS setup and (b) typical calibration curve.
Piezoelectric coefficient measured in different fixed locations inside and outside the driving electrode.
Schematic of standard electromechanical measurements by FS.
Schematic of the modified measurement setup using specially designed cantilever beam.
Frequency dependencies of measured piezoresponse (amplitude and phase) in bulk PZT sample with and without cantilever (resonances associated with cantilever are indicated by arrows).
ac-field dependence of measured deformation of PZT etalon bulk samples at .
Time stability of piezoelectric coefficient measurements of PZT bulk sample.
hysteresis of a PZT hybrid film annealed at .
Strain-field hysteresis of a PZT hybrid film at low and high applied voltages.
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