Abstract:Highly sensitive structures for ultrasonic microsensors have been easily achieved by controlling buckling behavior of the sensor diaphragms through intrinsic stress of sol-gel derived piezoelectric lead-zirconate-titanate (PZT) films. Upward buckled diaphragms are necessary for the high sensitivity, and were previously fabricated through two-step PZT formation process to prevent the diaphragms from being flattened due to a strong tension caused by tensile stress of PZT. In this work a new preparation process h… Show more
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