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The goal of this work is to demonstrate the application of anodic aluminum oxide (AAO) template as matching layer of ultrasonic transducer. Quarter-wavelength acoustic matching layer is known as a vital component in medical ultrasonic transducers to compensate the acoustic impedance mismatch between piezoelectric element and human body. The AAO matching layer is made of anodic aluminum oxide template...
High-frequency focused intravascular ultrasonic probes were fabricated in this study using dimple technique based on PMN–PT single crystal and lead-free KNN–KBT–Mn ceramic. The center frequency, bandwidth, and insertion loss of the PMN–PT transducer were 34MHz, 75%, and 22.9dB, respectively. For the lead-free probe, the center frequency, bandwidth, and insertion loss were found to be 40MHz, 72%, and...
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